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1.
N Engl J Med ; 383(26): 2514-2525, 2020 12 24.
Artigo em Inglês | MEDLINE | ID: mdl-33095526

RESUMO

BACKGROUND: The safety and efficacy of antenatal glucocorticoids in women in low-resource countries who are at risk for preterm birth are uncertain. METHODS: We conducted a multicountry, randomized trial involving pregnant women between 26 weeks 0 days and 33 weeks 6 days of gestation who were at risk for preterm birth. The participants were assigned to intramuscular dexamethasone or identical placebo. The primary outcomes were neonatal death alone, stillbirth or neonatal death, and possible maternal bacterial infection; neonatal death alone and stillbirth or neonatal death were evaluated with superiority analyses, and possible maternal bacterial infection was evaluated with a noninferiority analysis with the use of a prespecified margin of 1.25 on the relative scale. RESULTS: A total of 2852 women (and their 3070 fetuses) from 29 secondary- and tertiary-level hospitals across Bangladesh, India, Kenya, Nigeria, and Pakistan underwent randomization. The trial was stopped for benefit at the second interim analysis. Neonatal death occurred in 278 of 1417 infants (19.6%) in the dexamethasone group and in 331 of 1406 infants (23.5%) in the placebo group (relative risk, 0.84; 95% confidence interval [CI], 0.72 to 0.97; P = 0.03). Stillbirth or neonatal death occurred in 393 of 1532 fetuses and infants (25.7%) and in 444 of 1519 fetuses and infants (29.2%), respectively (relative risk, 0.88; 95% CI, 0.78 to 0.99; P = 0.04); the incidence of possible maternal bacterial infection was 4.8% and 6.3%, respectively (relative risk, 0.76; 95% CI, 0.56 to 1.03). There was no significant between-group difference in the incidence of adverse events. CONCLUSIONS: Among women in low-resource countries who were at risk for early preterm birth, the use of dexamethasone resulted in significantly lower risks of neonatal death alone and stillbirth or neonatal death than the use of placebo, without an increase in the incidence of possible maternal bacterial infection. (Funded by the Bill and Melinda Gates Foundation and the World Health Organization; Australian and New Zealand Clinical Trials Registry number, ACTRN12617000476336; Clinical Trials Registry-India number, CTRI/2017/04/008326.).


Assuntos
Dexametasona/administração & dosagem , Glucocorticoides/administração & dosagem , Doenças do Prematuro/prevenção & controle , Morte Perinatal/prevenção & controle , Cuidado Pré-Natal , Adulto , Países em Desenvolvimento , Feminino , Humanos , Recém-Nascido de Baixo Peso , Recém-Nascido , Recém-Nascido Prematuro , Doenças do Prematuro/epidemiologia , Injeções Intramusculares , Gravidez , Nascimento Prematuro , Risco , Natimorto/epidemiologia
2.
BJOG ; 130 Suppl 3: 113-123, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37530624

RESUMO

OBJECTIVE: To understand the extent to which adolescent awareness about anaemia and anaemia prevention can be changed by nutrition messages received at school. DESIGN: Mixed-methods pre-post intervention study. SETTING: Three government schools in Bagalkot, Belagavi and Raichur districts of Karnataka, India. POPULATION: Students of grade six and seven and teachers involved in implementing the intervention. METHODS: An educational intervention was co-developed by school teachers and nutrition experts using locally adapted resource materials that consisted of lectures, role play and practical demonstrations. Seven half-hour educational sessions were delivered by school teachers over 7 weeks to 455 students. Pre- and post-intervention tests measured changes in adolescents' knowledge about anaemia. Semi-structured in-depth interviews with teachers and focus groups with students explored their reactions to the intervention. MAIN OUTCOME MEASURES: Knowledge score related to anaemia. RESULTS: The percentage of children with correct scores increased by 7.3-49.0 percentage points for the tested questions after implementation of the intervention. The mean knowledge score increased by 3.67 ± 0.17 (p < 0.01). During interviews, teachers and students highlighted high acceptance of the intervention and materials, an increase in awareness, a positive attitude towards changing behaviour around diet, an increase in the demand for iron and folic acid supplements and improved sharing of messages learned with peers and families. Challenges expressed included need for further training, time limitations and hesitancy in teaching about menstruation and pregnancy. CONCLUSIONS: Educational interventions carried out for adolescents by teachers in schools are effective in improving awareness and attitude related to anaemia and its prevention.


Assuntos
Anemia Ferropriva , Gravidez , Feminino , Adolescente , Criança , Humanos , Anemia Ferropriva/prevenção & controle , Índia , Educação em Saúde , Dieta , Instituições Acadêmicas
3.
BJOG ; 130(10): 1275-1285, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37092252

RESUMO

OBJECTIVE: To inform digital health design by evaluating diagnostic test properties of antenatal blood pressure (BP) outputs and levels to identify women at risk of adverse outcomes. DESIGN: Planned secondary analysis of cluster randomised trials. SETTING: India, Pakistan, Mozambique. POPULATION: Women with in-community BP measurements and known pregnancy outcomes. METHODS: Blood pressure was defined by its outputs (systolic and/or diastolic, systolic only, diastolic only or mean arterial pressure [calculated]) and level: normotension-1 (<135/85 mmHg), normotension-2 (135-139/85-89 mmHg), non-severe hypertension (140-149/90-99 mmHg; 150-154/100-104 mmHg; 155-159/105-109 mmHg) and severe hypertension (≥160/110 mmHg). Dose-response (adjusted risk ratio [aRR]) and diagnostic test properties (negative [-LR] and positive [+LR] likelihood ratios) were estimated. MAIN OUTCOME MEASURES: Maternal/perinatal composites of mortality/morbidity. RESULTS: Among 21 069 pregnancies, different BP outputs had similar aRR, -LR, and +LR for adverse outcomes. No BP level (even normotension-1) was associated with low risk (all -LR ≥0.20). Across outcomes, risks rose progressively with higher BP levels above normotension-1. For each of maternal central nervous system events and stillbirth, BP ≥155/105 mmHg showed at least good diagnostic test performance (+LR ≥5.0) and BP ≥135/85 mmHg at least fair performance, similar to BP ≥140/90 mmHg (+LR 2.0-4.99). CONCLUSIONS: In the community, normal BP values do not provide reassurance about subsequent adverse outcomes. Given the similar performance of BP cut-offs of 135/85 and 140/90 mmHg for hypertension, and 155/105 and 160/110 mmHg for severe hypertension, digital decision support for women in the community should consider using these lower thresholds.


Assuntos
Hipertensão , Feminino , Humanos , Gravidez , Pressão Sanguínea , Hipertensão/diagnóstico , Hipertensão/epidemiologia , Determinação da Pressão Arterial , Resultado da Gravidez/epidemiologia , Monitorização Ambulatorial da Pressão Arterial
4.
BMC Pregnancy Childbirth ; 22(1): 407, 2022 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-35562720

RESUMO

BACKGROUND: Iron-deficiency anemia is a known risk factor for several adverse perinatal outcomes, but data on its impact on specific maternal morbidities is less robust. Further, information on associations between anemia in early pregnancy and subsequent outcomes are understudied. METHODS: The study population was derived from the Community Level Interventions for Pre-eclampsia (CLIP) trial in Karnataka State, India (NCT01911494). Included were women who were enrolled in either trial arm, delivered by trial end date, and had a baseline measure of hemoglobin (Hb). Anemia was classified by WHO standards into four groups: none (Hb ≥ 11 g/dL), mild (10.0 g/dL ≤ Hb < 11.0 g/dL), moderate (7.0 g/dL ≤ Hb < 10.0 g/dL) and severe (Hb < 7.0 g/dL). Targeted maximum likelihood estimation was used to estimate confounder-adjusted associations between anemia and a composite (and its components) of adverse maternal outcomes, including pregnancy hypertension. E-values were calculated to assess robustness to unmeasured confounding. RESULTS: Of 11,370 women included, 10,066 (88.5%) had anemia, that was mild (3690, 32.5%), moderate (6023, 53.0%), or severe (68, 0.6%). Almost all women (> 99%) reported taking iron supplements during pregnancy. Blood transfusions was more often administered to those with anemia that was mild (risk ratio [RR] 2.16, 95% confidence interval [CI] 1.31-3.56), moderate (RR 2.37, 95% CI 1.56-3.59), and severe (RR 5.70, 95% CI 3.00-10.85). No significant association was evident between anemia severity and haemorrhage (antepartum or postpartum) or sepsis, but there was a U-shaped association between anemia severity and pregnancy hypertension and pre-eclampsia specifically, with the lowest risk seen among those with mild or moderate anemia. CONCLUSION: In Karnataka State, India, current management strategies for mild-moderate anemia in early pregnancy are associated with similar rates of adverse maternal or perinatal outcomes, and a lower risk of pregnancy hypertension and preeclampsia, compared with no anemia in early pregnancy. Future research should focus on risk mitigation for women with severe anemia, and the potential effect of iron supplementation for women with normal Hb in early pregnancy.


Assuntos
Anemia , Hipertensão , Pré-Eclâmpsia , Anemia/epidemiologia , Feminino , Hemoglobinas , Humanos , Índia/epidemiologia , Ferro/uso terapêutico , Pré-Eclâmpsia/epidemiologia , Gravidez
5.
Lancet ; 396(10250): 553-563, 2020 08 22.
Artigo em Inglês | MEDLINE | ID: mdl-32828187

RESUMO

BACKGROUND: To overcome the three delays in triage, transport and treatment that underlie adverse pregnancy outcomes, we aimed to reduce all-cause adverse outcomes with community-level interventions targeting women with pregnancy hypertension in three low-income countries. METHODS: In this individual participant-level meta-analysis, we de-identified and pooled data from the Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised controlled trials in Mozambique, Pakistan, and India, which were run in 2014-17. Consenting pregnant women, aged 12-49 years, were recruited in their homes. Clusters, defined by local administrative units, were randomly assigned (1:1) to intervention or control groups. The control groups continued local standard of care. The intervention comprised community engagement and existing community health worker-led mobile health-supported early detection, initial treatment, and hospital referral of women with hypertension. For this meta-analysis, as for the original studies, the primary outcome was a composite of maternal or perinatal outcome (either maternal, fetal, or neonatal death, or severe morbidity for the mother or baby), assessed by unmasked trial surveillance personnel. For this analysis, we included all consenting participants who were followed up with completed pregnancies at trial end. We analysed the outcome data with multilevel modelling and present data with the summary statistic of adjusted odds ratios (ORs) with 95% CIs (fixed effects for maternal age, parity, maternal education, and random effects for country and cluster). This meta-analysis is registered with PROSPERO, CRD42018102564. FINDINGS: Overall, 44 clusters (69 330 pregnant women) were randomly assigned to intervention (22 clusters [36 008 pregnancies]) or control (22 clusters [33 322 pregnancies]) groups. 32 290 (89·7%) pregnancies in the intervention group and 29 698 (89·1%) in the control group were followed up successfully. Median maternal age of included women was 26 years (IQR 22-30). In the intervention clusters, 6990 group and 16 691 home-based community engagement sessions and 138 347 community health worker-led visits to 20 819 (57·8%) of 36 008 women (of whom 11 095 [53·3%] had a visit every 4 weeks) occurred. Blood pressure and dipstick proteinuria were assessed per protocol. Few women were eligible for methyldopa for severe hypertension (181 [1%] of 20 819) or intramuscular magnesium sulfate for pre-eclampsia (198 [1%]), of whom most accepted treatment (162 [89·5%] of 181 for severe hypertension and 133 [67·2%] of 198 for pre-eclampsia). 1255 (6%) were referred to a comprehensive emergency obstetric care facility, of whom 864 (82%) accepted the referral. The primary outcome was similar in the intervention (7871 [24%] of 32 290 pregnancies) and control clusters (6516 [22%] of 29 698; adjusted OR 1·17, 95% CI 0·90-1·51; p=0·24). No intervention-related serious adverse events occurred, and few adverse effects occurred after in-community treatment with methyldopa (one [2%] of 51; India only) and none occurred after in-community treatment with magnesium sulfate or during transport to facility. INTERPRETATION: The CLIP intervention did not reduce adverse pregnancy outcomes. Future community-level interventions should expand the community health worker workforce, assess general (rather than condition-specific) messaging, and include health system strengthening. FUNDING: University of British Columbia, a grantee of the Bill & Melinda Gates Foundation.


Assuntos
Pré-Eclâmpsia/epidemiologia , Resultado da Gravidez/epidemiologia , Adolescente , Adulto , Criança , Serviços de Saúde Comunitária/normas , Feminino , Humanos , Índia/epidemiologia , Morte Materna/estatística & dados numéricos , Pessoa de Meia-Idade , Moçambique/epidemiologia , Paquistão/epidemiologia , Pré-Eclâmpsia/diagnóstico , Pré-Eclâmpsia/terapia , Gravidez , Ensaios Clínicos Controlados Aleatórios como Assunto , Adulto Jovem
6.
N Engl J Med ; 379(8): 743-752, 2018 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-29949473

RESUMO

BACKGROUND: Postpartum hemorrhage is the most common cause of maternal death. Oxytocin is the standard therapy for the prevention of postpartum hemorrhage, but it requires cold storage, which is not available in many countries. In a large trial, we compared a novel formulation of heat-stable carbetocin with oxytocin. METHODS: We enrolled women across 23 sites in 10 countries in a randomized, double-blind, noninferiority trial comparing intramuscular injections of heat-stable carbetocin (at a dose of 100 µg) with oxytocin (at a dose of 10 IU) administered immediately after vaginal birth. Both drugs were kept in cold storage (2 to 8°C) to maintain double-blinding. There were two primary outcomes: the proportion of women with blood loss of at least 500 ml or the use of additional uterotonic agents, and the proportion of women with blood loss of at least 1000 ml. The noninferiority margins for the relative risks of these outcomes were 1.16 and 1.23, respectively. RESULTS: A total of 29,645 women underwent randomization. The frequency of blood loss of at least 500 ml or the use of additional uterotonic agents was 14.5% in the carbetocin group and 14.4% in the oxytocin group (relative risk, 1.01; 95% confidence interval [CI], 0.95 to 1.06), a finding that was consistent with noninferiority. The frequency of blood loss of at least 1000 ml was 1.51% in the carbetocin group and 1.45% in the oxytocin group (relative risk, 1.04; 95% CI, 0.87 to 1.25), with the confidence interval crossing the margin of noninferiority. The use of additional uterotonic agents, interventions to stop bleeding, and adverse effects did not differ significantly between the two groups. CONCLUSIONS: Heat-stable carbetocin was noninferior to oxytocin for the prevention of blood loss of at least 500 ml or the use of additional uterotonic agents. Noninferiority was not shown for the outcome of blood loss of at least 1000 ml; low event rates for this outcome reduced the power of the trial. (Funded by Merck Sharpe & Dohme; CHAMPION Australian New Zealand Clinical Trials Registry number, ACTRN12614000870651 ; EudraCT number, 2014-004445-26 ; and Clinical Trials Registry-India number, CTRI/2016/05/006969 .).


Assuntos
Ocitócicos/uso terapêutico , Ocitocina/análogos & derivados , Ocitocina/uso terapêutico , Hemorragia Pós-Parto/prevenção & controle , Adulto , Método Duplo-Cego , Estabilidade de Medicamentos , Feminino , Humanos , Injeções Intramusculares , Ocitócicos/efeitos adversos , Ocitocina/efeitos adversos , Gravidez , Risco , Adulto Jovem
7.
Reprod Health ; 18(1): 230, 2021 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-34775959

RESUMO

BACKGROUND: Obstetric haemorrhage continues to be a leading cause of maternal mortality, contributing to more than a quarter of the 2,443,000 maternal deaths reported between 2003 and 2009. During this period, about 70% of the haemorrhagic deaths occurred postpartum. In addition to other identifiable risk factors for greater postpartum blood loss, the duration of the third stage of labour (TSL) seems to be important, as literature shows that a longer TSL can be associated with more blood loss. To better describe the association between the duration of TSL and postpartum blood loss in women receiving active management of third stage of labour (AMTSL), this secondary analysis of the WHO CHAMPION trial data has been conducted. METHODS: This was a secondary analysis of the WHO CHAMPION trial conducted in twenty-three sites in ten countries. We studied the association between the TSL duration and blood loss in the sub cohort of women from the CHAMPION trial (all of whom received AMTSL), with TSL upto 60 min and no interventions for postpartum haemorrhage. We used a general linear model to fit blood loss as a function of TSL duration on the log scale, arm and center, using a normal distribution and the log link function. We showed this association separately for oxytocin and for Heat stable (HS) carbetocin. RESULTS: For the 10,040 women analysed, blood loss rose steeply with third stage duration in the first 10 min, but more slowly after 10 min. This trend was observed for both Oxytocin and HS carbetocin and the difference in the trends for both drugs was not statistically significant (p-value = 0.2070). CONCLUSIONS: There was a positive association between postpartum blood loss and TSL duration with either uterotonic. Blood loss rose steeply with TSL duration until 10 min, and more slowly after 10 min. Study registration The main trial was registered with Australian New Zealand Clinical Trials Registry ACTRN12614000870651 and Clinical Trial Registry of India CTRI/2016/05/006969.


The duration of the third stage of labour (TSL) seems to be an important risk factor for greater postpartum blood loss, as literature shows that a longer TSL can be associated with more blood loss. Active management of third stage of labour (AMTSL), included in the WHO guidelines for prevention of postpartum haemorrhage (PPH), is effective in reducing both the amount of postpartum blood loss and the duration of the third stage. To better describe the association between duration of TSL and postpartum blood loss in women receiving AMTSL, we conducted this secondary analysis of WHO CHAMPION trial data.To assess the association between the duration of third stage of labour and postpartum blood loss, a subcohort of the CHAMPION modified ITT population was selected by excluding women with missing blood loss or missing TSL duration or TSL duration more than 60 min and women with interventions. Thus, the subcohort consisted of 10,040 women.In women with vaginal birth and not receiving interventions for treating atonic PPH or other sources of bleeding, and with TSL duration up to 60 min, there was a positive association between duration of the TSL and postpartum blood loss. The blood loss rose steeply with duration in women with TSL of 10 min or less, while in women with longer TSL duration the slope was less steep.There was no evidence of a difference between oxytocin and HS carbetocin in the pattern of association of duration of the TSL and blood loss.


Assuntos
Ocitócicos , Hemorragia Pós-Parto , Austrália , Ergonovina , Feminino , Humanos , Terceira Fase do Trabalho de Parto , Ocitócicos/uso terapêutico , Hemorragia Pós-Parto/epidemiologia , Período Pós-Parto , Gravidez , Organização Mundial da Saúde
8.
Bull World Health Organ ; 98(10): 661-670, 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-33177756

RESUMO

OBJECTIVE: To estimate the prevalence and prognosis of proteinuria at enrolment in the 27 intervention clusters of the Community-Level Interventions for Pre-eclampsia cluster randomized trials. METHODS: We identified pregnant women eligible for inclusion in the trials in their communities in four countries (2013-2017). We included women who delivered by trial end and received an intervention antenatal care visit. The intervention was a community health worker providing supplementary hypertension-oriented care, including proteinuria assessment by visual assessment of urinary dipstick at the first visit and all subsequent visits when hypertension was detected. In a multilevel regression model, we compared baseline prevalence of proteinuria (≥ 1+ or ≥ 2+) across countries. We compared the incidence of subsequent complications by baseline proteinuria. FINDINGS: Baseline proteinuria was detected in less than 5% of eligible pregnancies in each country (India: 234/6120; Mozambique: 94/4234; Nigeria: 286/7004; Pakistan: 315/10 885), almost always with normotension (India: 225/234; Mozambique: 93/94; Nigeria: 241/286; Pakistan: 264/315). There was no consistent relationship between baseline proteinuria (either ≥ 1+ or ≥ 2+) and progression to hypertension, maternal mortality or morbidity, birth at < 37 weeks, caesarean section delivery or perinatal mortality or morbidity. If proteinuria testing were restricted to women with hypertension, we projected annual cost savings of 153 223 981 United States dollars (US$) in India, US$ 9 055 286 in Mozambique, US$ 53 181 933 in Nigeria and US$ 38 828 746 in Pakistan. CONCLUSION: Our findings question the recommendations to routinely evaluate proteinuria at first assessment in pregnancy. Restricting proteinuria testing to pregnant women with hypertension has the potential to save resources.


Assuntos
Cesárea , Diagnóstico Pré-Natal , Feminino , Humanos , Índia , Moçambique/epidemiologia , Nigéria , Paquistão , Gravidez , Proteinúria/diagnóstico , Proteinúria/epidemiologia
9.
PLoS Med ; 16(4): e1002783, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30978179

RESUMO

BACKGROUND: Most pregnancy hypertension estimates in less-developed countries are from cross-sectional hospital surveys and are considered overestimates. We estimated population-based rates by standardised methods in 27 intervention clusters of the Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised trials. METHODS AND FINDINGS: CLIP-eligible pregnant women identified in their homes or local primary health centres (2013-2017). Included here are women who had delivered by trial end and received a visit from a community health worker trained to provide supplementary hypertension-oriented care, including standardised blood pressure (BP) measurement. Hypertension (BP ≥ 140/90 mm Hg) was defined as chronic (first detected at <20 weeks gestation) or gestational (≥20 weeks); pre-eclampsia was gestational hypertension plus proteinuria or a pre-eclampsia-defining complication. A multi-level regression model compared hypertension rates and types between countries (p < 0.05 considered significant). In 28,420 pregnancies studied, women were usually young (median age 23-28 years), parous (53.7%-77.3%), with singletons (≥97.5%), and enrolled at a median gestational age of 10.4 (India) to 25.9 weeks (Mozambique). Basic education varied (22.8% in Pakistan to 57.9% in India). Pregnancy hypertension incidence was lower in Pakistan (9.3%) than India (10.3%), Mozambique (10.9%), or Nigeria (10.2%) (p = 0.001). Most hypertension was diastolic only (46.4% in India, 72.7% in Pakistan, 61.3% in Mozambique, and 63.3% in Nigeria). At first presentation with elevated BP, gestational hypertension was most common diagnosis (particularly in Mozambique [8.4%] versus India [6.9%], Pakistan [6.5%], and Nigeria [7.1%]; p < 0.001), followed by pre-eclampsia (India [3.8%], Nigeria [3.0%], Pakistan [2.4%], and Mozambique [2.3%]; p < 0.001) and chronic hypertension (especially in Mozambique [2.5%] and Nigeria [2.8%], compared with India [1.2%] and Pakistan [1.5%]; p < 0.001). Inclusion of additional diagnoses of hypertension and related complications, from household surveys or facility record review (unavailable in Nigeria), revealed higher hypertension incidence: 14.0% in India, 11.6% in Pakistan, and 16.8% in Mozambique; eclampsia was rare (<0.5%). CONCLUSIONS: Pregnancy hypertension is common in less-developed settings. Most women in this study presented with gestational hypertension amenable to surveillance and timed delivery to improve outcomes. TRIAL REGISTRATION: This study is a secondary analysis of a clinical trial - ClinicalTrials.gov registration number NCT01911494.


Assuntos
Hipertensão Induzida pela Gravidez/epidemiologia , Pré-Eclâmpsia/epidemiologia , Adulto , Estudos Transversais , Feminino , Humanos , Hipertensão/epidemiologia , Incidência , Índia/epidemiologia , Moçambique/epidemiologia , Nigéria/epidemiologia , Paquistão/epidemiologia , Gravidez , Complicações na Gravidez/epidemiologia , Cuidado Pré-Natal , Adulto Jovem
10.
Reprod Health ; 15(Suppl 1): 91, 2018 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-29945665

RESUMO

BACKGROUND: Pre-eclampsia and eclampsia are major causes of maternal morbidity and mortality. Magnesium sulphate is accepted as the anticonvulsant of choice in these conditions and is present on the WHO essential medicines list and the Indian National List of Essential Medicines, 2015. Despite this, magnesium sulphate is not widely used in India for pre-eclampsia and eclampsia. In addition to other factors, lack of availability may be a reason for sub-optimal usage. This study was undertaken to assess the availability and use of magnesium sulphate at public and private health care facilities in two districts of North Karnataka, India. METHODS: A facility assessment survey was undertaken as part of the Community Level Interventions for Pre-eclampsia (CLIP) Feasibility Study which was undertaken prior to the CLIP Trials (NCT01911494). This study was undertaken in 12 areas of Belagavi and Bagalkote districts of North Karnataka, India and included a survey of 88 facilities. Data were collected in all facilities by interviewing the health care providers and analysed using Excel. RESULTS: Of the 88 facilities, 28 were public, and 60 were private. In the public facilities, magnesium sulphate was available in six out of 10 Primary Health Centres (60%), in all eight taluka (sub-district) hospitals (100%), five of eight community health centres (63%) and both district hospitals (100%). Fifty-five of 60 private facilities (92%) reported availability of magnesium sulphate. Stock outs were reported in six facilities in the preceding six months - five public and one private. Twenty-five percent weight/volume and 50% weight/volume concentration formulations were available variably across the public and private facilities. Sixty-eight facilities (77%) used the drug for severe pre-eclampsia and 12 facilities (13.6%) did not use the drug even for eclampsia. Varied dosing schedules were reported from facility to facility. CONCLUSIONS: Poor availability of magnesium sulphate was identified in many facilities, and stock outs in some. Individual differences in usage were identified. Ensuring a reliable supply of magnesium sulphate, standard formulations and recommendations of dosage schedules and training may help improve use; and decrease morbidity and mortality due to pre-eclampsia/ eclampsia. TRIAL REGISTRATION: The CLIP trial was registered with ClinicalTrials.gov ( NCT01911494 ).


Assuntos
Anticonvulsivantes/provisão & distribuição , Anticonvulsivantes/uso terapêutico , Eclampsia/tratamento farmacológico , Hospitais Privados/organização & administração , Hospitais Públicos/organização & administração , Sulfato de Magnésio/provisão & distribuição , Sulfato de Magnésio/uso terapêutico , Pré-Eclâmpsia/tratamento farmacológico , Atenção Primária à Saúde/organização & administração , Criança , Eclampsia/diagnóstico , Feminino , Pesquisas sobre Atenção à Saúde , Instalações de Saúde , Humanos , Índia , Recém-Nascido , Pré-Eclâmpsia/diagnóstico , Gravidez
11.
Reprod Health ; 15(Suppl 1): 101, 2018 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-29945662

RESUMO

BACKGROUND: Hypertensive disorders are the second highest direct obstetric cause of maternal death after haemorrhage, accounting for 14% of maternal deaths globally. Pregnancy hypertension contributes to maternal deaths, particularly in low- and middle-income countries, due to a scarcity of doctors providing evidence-based emergency obstetric care. Task-sharing some obstetric responsibilities may help to reduce the mortality rates. This study was conducted to assess acceptability by the community and other healthcare providers, for task-sharing by community health workers (CHW) in the identification and initial care in hypertensive disorders in pregnancy. METHODS: This study was conducted in two districts of Karnataka state in south India. A total of 14 focus group discussions were convened with various community representatives: women of reproductive age (N = 6), male decision-makers (N = 2), female decision-makers (N = 3), and community leaders (N = 3). One-to-one interviews were held with medical officers (N = 2), private healthcare OBGYN specialists (N = 2), senior health administrators (N = 2), Taluka (county) health officers (N = 2), and obstetricians (N = 4). All data collection was facilitated by local researchers familiar with the setting and language. Data were subsequently transcribed, translated and analysed thematically using NVivo 10 software. RESULTS: There was strong community support for home visits by CHW to measure the blood pressure of pregnant women; however, respondents were concerned about their knowledge, training and effectiveness. The treatment with oral antihypertensive agents and magnesium sulphate in emergencies was accepted by community representatives but medical practitioners and health administrators had reservations, and insisted on emergency transport to a higher facility. The most important barriers for task-sharing were concerns regarding insufficient training, limited availability of medications, the questionable validity of blood pressure devices, and the ability of CHW to correctly diagnose and intervene in cases of hypertensive disorders of pregnancy. CONCLUSION: Task-sharing to community-based health workers has potential to facilitate early diagnosis of the hypertensive disorders of pregnancy and assist in the provision of emergency care. We identified some facilitators and barriers for successful task-sharing of emergency obstetric care aimed at reducing mortality and morbidity due to hypertensive disorders of pregnancy.


Assuntos
Agentes Comunitários de Saúde , Serviços Médicos de Emergência/normas , Tratamento de Emergência , Conhecimentos, Atitudes e Prática em Saúde , Recursos em Saúde/provisão & distribuição , Pré-Eclâmpsia/diagnóstico , Encaminhamento e Consulta , Serviços de Saúde Comunitária , Estudos de Viabilidade , Feminino , Grupos Focais , Humanos , Índia , Masculino , Mortalidade Materna , Pré-Eclâmpsia/prevenção & controle , Gravidez
12.
Infect Dis Obstet Gynecol ; 2017: 1040984, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28293099

RESUMO

Background. A Nugent score > 7 has been defined as the gold standard for the diagnosis for bacterial vaginosis (BV), though it is resource intensive and impractical as point of care testing. We sought to determine if colorimetric assessment of vaginal pH can accurately predict the occurrence of BV. Methods. We performed a planned subanalysis of 1,216 pregnant women between 13 0/7 and 19 6/7 weeks who underwent vaginal examination as part of a randomized controlled trial. Using a standardized technique, specimens were obtained for colorimetric assessment and two separate slides for Gram staining. These slides were subsequently evaluated by two independent blinded microbiologists for Nugent scoring. Results. Interrater reliability of the interpretation of the Nugent score was excellent (intraclass correlation-individual 0.93 (95 CI 0.92 to 0.94) and average 0.96 (95% CI 0.95 to 0.97)). The sensitivity of an elevated pH > 5 for a Nugent score > 7 was 21.9% while the specificity was 84.5%. The positive predictive value in our population was 33.7% with a negative predictive value of 75.0%. Conclusion. Though the Nugent score is internally accurate, the prediction of BV using vaginal pH alone has poor sensitivity and specificity.


Assuntos
Técnicas Bacteriológicas/métodos , Colorimetria/métodos , Vaginose Bacteriana/diagnóstico , Adulto , Feminino , Humanos , Concentração de Íons de Hidrogênio , Gravidez , Reprodutibilidade dos Testes , Vagina/microbiologia , Vagina/fisiopatologia , Adulto Jovem
13.
Reprod Health ; 13 Suppl 1: 35, 2016 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-27358068

RESUMO

BACKGROUND: Maternal deaths have been attributed in large part to delays in recognition of illness, timely transport to facility, and timely treatment once there. As community perceptions of pregnancy and their complications are critical to averting maternal morbidity and mortality, this study sought to contribute to the literature and explore community-based understandings of pre-eclampsia and eclampsia. METHODS: The study was conducted in rural Karnataka State, India, in 2012-2013. Fourteen focus groups were held with the following community stakeholders: three with community leaders (n = 27), two with male decision-makers (n = 19), three with female decision-makers (n = 41), and six with reproductive age women (n = 132). Focus groups were facilitated by local researchers with clinical and research expertise. Discussions were audio-recorded, transcribed verbatim and translated to English for thematic analysis using NVivo 10. RESULTS: Terminology exists in the local language (Kannada) to describe convulsions and hypertension, but there were no terms that are specific to pregnancy. Community participants perceived stress, tension and poor diet to be precipitants of hypertension in pregnancy. Seizures in pregnancy were thought to be brought on by anaemia, poor medical adherence, lack of tetanus toxoid immunization, and exposure in pregnancy to fire or water. Sweating, fatigue, dizziness-unsteadiness, swelling, and irritability were perceived to be signs of hypertension, which was recognized to have the potential to lead to eclampsia or death. Home remedies, such as providing the smell of onion, placing an iron object in the hands, or squeezing the fingers and toes, were all used regularly to treat seizures prior to accessing facility-based care although transport is not delayed. CONCLUSIONS: It is evident that 'pre-eclampsia' and 'eclampsia' are not well-known; instead hypertension and seizures are perceived as conditions that may occur during or outside pregnancy. Improving community knowledge about, and modifying attitudes towards, hypertension in pregnancy and its complications (including eclampsia) has the potential to address community-based delays in disease recognition and delays in treatment that contribute to maternal and perinatal morbidity and mortality. Advocacy and educational initiatives should be designed to target knowledge gaps and potentially harmful practices, and respond to cultural understandings of disease. TRIAL REGISTRATION: NCT01911494.


Assuntos
Serviços de Saúde Comunitária/estatística & dados numéricos , Eclampsia , Mortalidade Materna , Aceitação pelo Paciente de Cuidados de Saúde , Percepção , Pré-Eclâmpsia , Características de Residência , Adolescente , Adulto , Idoso , Participação da Comunidade , Feminino , Humanos , Índia , Masculino , Pessoa de Meia-Idade , Tocologia , Gravidez , Cuidado Pré-Natal , População Rural , Adulto Jovem
14.
Reprod Health ; 13(Suppl 2): 113, 2016 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-27719678

RESUMO

BACKGROUND: In India, the hypertensive disorders of pregnancy and postpartum haemorrhage are responsible for nearly 40 % of all maternal deaths. Most of these deaths occur in primary health settings which frequently lack essential equipment and medication, are understaffed, and have limited or no access to specialist care. Community health care workers are regarded as essential providers of basic maternity care; and the quality of care they provide is dependent on the level of knowledge and skills they possess. However, there is limited research regarding their ability to manage pregnancy complications. This study aims to describe the current state of knowledge regarding pre-eclampsia and eclampsia among community health care workers (auxiliary nurse midwives, accredited social health activists, staff nurses) in northern Karnataka, India. Furthermore, this study describes the treatment approaches used by various cadres of community health workers for these conditions. The findings of this study can help plan focussed training sessions to build upon their strengths and to address the identified gaps. METHODS: Data were collected as part of a larger study aimed at assessing the feasibility of community-based treatment for pre-eclampsia. Eight focus group discussions were conducted in 2012-2013 in northern Karnataka State: four with staff nurses and auxiliary nurse midwives and four with accredited social health activists. In addition, twelve auxiliary nurse midwives and staff nurses completed questionnaires to explore their competence and self-efficacy in managing pre-eclampsia. Qualitative data were audio-recorded, transcribed verbatim and translated for thematic analysis using NVivo 10. RESULTS: Community health workers described their understanding of the origins of hypertension and seizures in pregnancy. Psychological explanations of hypertension were most commonly reported: stress, tension, and fear. The most common explanation for eclampsia was not receiving a tetanus vaccination. Despite some common misperceptions regarding aetiology, these community health workers demonstrated a good grasp of the potential consequences of hypertension in pregnancy. According to auxiliary nurse midwives and staff nurses, if hypertension was detected they encouraged rest, decreased salt intake, iron supplementation and tetanus vaccination. In addition, some staff nurses administered antihypertensives, MgSO4, or other anticonvulsants. All auxiliary nurse midwives had some awareness of MgSO4, but none had administered it themselves. CONCLUSIONS: This study showed that knowledge regarding the aetiology of pre-eclampsia was limited. Nevertheless, their basic knowledge and skills could be strengthened to more effectively manage the hypertensive disorders of pregnancy in their communities. TRIAL REGISTRATION: NCT01911494.


Assuntos
Competência Clínica , Serviços de Saúde Comunitária/normas , Agentes Comunitários de Saúde/educação , Conhecimentos, Atitudes e Prática em Saúde , Guias de Prática Clínica como Assunto/normas , Pré-Eclâmpsia/prevenção & controle , Adulto , Gerenciamento Clínico , Estudos de Viabilidade , Feminino , Humanos , Hipertensão/diagnóstico , Hipertensão/etiologia , Hipertensão/prevenção & controle , Índia , Pré-Eclâmpsia/fisiopatologia , Gravidez , Complicações na Gravidez/diagnóstico , Complicações na Gravidez/etiologia , Complicações na Gravidez/prevenção & controle , Resultado da Gravidez , Pesquisa Qualitativa , Convulsões/diagnóstico , Convulsões/etiologia , Convulsões/prevenção & controle
15.
Reprod Health ; 13 Suppl 1: 56, 2016 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-27357579

RESUMO

BACKGROUND: Globally, pre-eclampsia and eclampsia are major contributors to maternal and perinatal mortality; of which the vast majority of deaths occur in less developed countries. In addition, a disproportionate number of morbidities and mortalities occur due to delayed access to health services. The Community Level Interventions for Pre-eclampsia (CLIP) Trial aims to task-shift to community health workers the identification and emergency management of pre-eclampsia and eclampsia to improve access and timely care. Literature revealed paucity of published feasibility assessments prior to initiating large-scale community-based interventions. Arguably, well-conducted feasibility studies can provide valuable information about the potential success of clinical trials prior to implementation. Failure to fully understand the study context risks the effective implementation of the intervention and limits the likelihood of post-trial scale-up. Therefore, it was imperative to conduct community-level feasibility assessments for a trial of this magnitude. METHODS: A mixed methods design guided by normalization process theory was used for this study in Nigeria, Mozambique, Pakistan, and India to explore enabling and impeding factors for the CLIP Trial implementation. Qualitative data were collected through participant observation, document review, focus group discussion and in-depth interviews with diverse groups of community members, key informants at community level, healthcare providers, and policy makers. Quantitative data were collected through health facility assessments, self-administered community health worker surveys, and household demographic and health surveillance. RESULTS: Refer to CLIP Trial feasibility publications in the current and/or forthcoming supplement. CONCLUSIONS: Feasibility assessments for community level interventions, particularly those involving task-shifting across diverse regions, require an appropriate theoretical framework and careful selection of research methods. The use of qualitative and quantitative methods increased the data richness to better understand the community contexts. TRIAL REGISTRATION: NCT01911494.


Assuntos
Serviços de Saúde Comunitária/estatística & dados numéricos , Participação da Comunidade , Eclampsia , Mortalidade Materna , Aceitação pelo Paciente de Cuidados de Saúde , Percepção , Pré-Eclâmpsia , Características de Residência , Adolescente , Adulto , África Subsaariana , Ásia , Criança , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Tocologia , Gravidez , Cuidado Pré-Natal , Pesquisa Qualitativa , Adulto Jovem
16.
Reprod Health ; 13 Suppl 1: 37, 2016 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-27356502

RESUMO

BACKGROUND: Karnataka State continues to have the highest rates of maternal mortality in south India at 144/100,000 live births, but lower than the national estimates of 190-220/100,000 live births. Various barriers exist to timely and appropriate utilization of services during pregnancy, childbirth and postpartum. This study aimed to describe the patterns and determinants of routine and emergency maternal health care utilization in rural Karnataka State, India. METHODS: This study was conducted in Karnataka in 2012-2013. Purposive sampling was used to convene twenty three focus groups and twelve individual interviews with community and health system representatives: Auxiliary Nurse Midwives and Staff Nurses, Accredited Social Health Activists, community leaders, male decision-makers, female decision-makers, women of reproductive age, medical officers, private health care providers, senior health administrators, District health officers, and obstetricians. Local researchers familiar with the setting and language conducted all focus groups and interviews, these researchers were not known to community participants. All discussions were audio recorded, transcribed, and translated to English for analysis. A thematic analysis approach was taken utilizing an a priori thematic framework as well as inductive identification of themes. RESULTS: Most women in the focus groups reported regular antenatal care attendance, for an average of four visits, and more often for high-risk pregnancies. Antenatal care was typically delivered at the periphery by non-specialised providers. Participants reported that sought was care women experienced danger signs of complications. Postpartum care was reportedly rare, and mainly sought for the purpose of neonatal care. Factors that influenced women's care-seeking included their limited autonomy, poor access to and funding for transport for non-emergent conditions, perceived poor quality of health care facilities, and the costs of care. CONCLUSIONS: Rural south Indian communities reported regular use of health care services during pregnancy and for delivery. Uptake of maternity care services was attributed to new government programmes and increased availability of maternity services; nevertheless, some women delayed disclosure of pregnancy and first antenatal visit. Community-based initiatives should be enhanced to encourage early disclosure of pregnancies and to provide the community information regarding the importance of facility-based care. Health facility infrastructure in rural Karnataka should also be enhanced to ensure a consistent power supply and improved cleanliness on the wards. TRIAL REGISTRATION: NCT01911494.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Serviços de Saúde Materna/estatística & dados numéricos , Mortalidade Materna , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Gestantes/psicologia , Adolescente , Adulto , Idoso , Estudos de Viabilidade , Feminino , Grupos Focais , Acessibilidade aos Serviços de Saúde , Humanos , Índia , Masculino , Saúde Materna , Pessoa de Meia-Idade , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Gravidez , Pesquisa Qualitativa , Adulto Jovem
17.
Reprod Health ; 12 Suppl 2: S13, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26063586

RESUMO

BACKGROUND: Skilled birth attendance and institutional delivery have been advocated for reducing maternal, perinatal and neonatal mortality (PMR and NMR). India has successfully implemented various strategies to promote skilled attendance and incentivize institutional deliveries in the last 5 years. OBJECTIVES: The study evaluates the trends in institutional delivery, PMR, NMR, and their risk factors in two Eunice Kennedy Shriver NICHD Global Network for Women's and Children's Health Research sites, in Belgaum and Nagpur, India, between January 2010 and December 2013. DESIGN/METHODS: Descriptive data stratified by level of delivery care and key risk factors were analyzed for 36 geographic clusters providing 48 months of data from a prospective, population-based surveillance system that registers all pregnant permanent residents in the study area, and their pregnancy outcomes irrespective of where they deliver. Log binomial models with generalized estimating equations to control for correlation of clustered observations were used to test the trends significance RESULTS: 64,803 deliveries were recorded in Belgaum and 39,081 in Nagpur. Institutional deliveries increased from 92.6% to 96.1% in Belgaum and from 89.5% to 98.6% in Nagpur (both p<0.0001); hospital rates increased from 63.4% to 71.0% (p=0.002) and from 63.1% to 72.0% (p<0.0001), respectively. PMR declined from 41.3 to 34.6 (p=0.008) deaths per 1,000 births in Belgaum and from 47.4 to 40.8 (p=0.09) in Nagpur. Stillbirths also declined, from 22.5 to 16.3 per 1,000 births in Belgaum and from 29.3 to 21.1 in Nagpur (both p=0.002). NMR remained unchanged. CONCLUSIONS: Significant increases in institutional deliveries, particularly in hospitals, were accompanied by reductions in stillbirths and PMR, but not by NMR.


Assuntos
Parto Obstétrico/estatística & dados numéricos , Mortalidade Infantil , Mortalidade Perinatal , Adulto , Causas de Morte , Atenção à Saúde/organização & administração , Atenção à Saúde/tendências , Parto Obstétrico/métodos , Parto Obstétrico/tendências , Feminino , Instalações de Saúde/estatística & dados numéricos , Humanos , Índia/epidemiologia , Lactente , Mortalidade Infantil/tendências , Recém-Nascido , Idade Materna , Mortalidade Perinatal/tendências , Gravidez , Fatores de Risco , Natimorto/epidemiologia , Adulto Jovem
18.
PLoS One ; 18(4): e0283631, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37018289

RESUMO

Between 1990 and 2016 the number of adolescents with anemia world-wide increased by 20% to almost one in four. Iron deficiency in adolescence results in compromised growth, decreased cognitive function, and depressed immune function, and can increase the risk of negative outcomes in pregnancy, especially in the case of young adolescents. In India, despite several decades of governmental investment in anemia prevention and treatment, more than half of women of reproductive age are anemic, with rates even higher in the adolescent population. Although awareness of adolescence as a nutrition-sensitive developmental stage is increasing, there is a lack of qualitative research on the perspectives of adolescents and families on anemia and related services. In this study, we explored the issues influencing adolescents' awareness of anemia in three rural areas of Karnataka. Sixty-four in-depth interviews and six focus group discussions were conducted with adolescents (those who had never been pregnant, pregnant adolescents, and young mothers), community members, and nutrition-related service providers in the health and education sectors. An inductive analytical approach was used. We found that adolescent girls, particularly those who have not experienced pregnancy or motherhood, had very low awareness of anemia. State programs including school-based distribution of iron and folic acid supplements and nutrition talks were not seen to be resulting in knowledge and acceptance of the importance of preventing anemia. Pregnancy represents a turning point in which adolescents are systematically tested for anemia as part of routine antenatal care, increasing their awareness of, and access to, treatment for the condition. At the same time, pregnancy represents to family and community a period to insist on a nutritious diet. For progress in anemia reduction to be made, improved age-appropriate measures specific for adolescence are required. Improving school-based nutrition outreach is an important opportunity to reach adolescents.


Assuntos
Anemia , Feminino , Adolescente , Gravidez , Humanos , Índia/epidemiologia , Anemia/epidemiologia , Ferro , Pesquisa Qualitativa , Atenção
19.
Trials ; 24(1): 818, 2023 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-38124098

RESUMO

BACKGROUND: Anemia is a worldwide problem with iron deficiency being the most common cause. When anemia occurs in pregnancy, it increases the risk of adverse maternal, fetal, and postnatal outcomes. It induces preterm births and low birth weight (LBW) deliveries, long-term neurodevelopmental sequelae, and an increased risk of earlier onset of postnatal iron deficiency. Anemia rates are among the highest in South Asia, and India's National Family Health Survey (NFHS-5) for 2019-2021 indicated that over half of pregnant women, and more than 65% of children, in the country are classified as anemic (Sciences IIfP, National Family Health Survey-5, 2019-21, India Fact Sheet). In 2021, the parent RAPIDIRON Trial (Derman et al., Trials 22:649, 2021) was initiated in two states in India, with the goal of assessing whether a dose of intravenous (IV) iron given to anemic women during early pregnancy results in a greater proportion of participants with normal hemoglobin concentrations in the third trimester and a lower proportion of participants with LBW deliveries compared to oral iron. As a follow-up to the RAPIDIRON Trial, the RAPIDIRON-KIDS Study will follow the offspring of previously randomized mothers to assess, neurobehavioral, hematological, and health outcomes. METHODS: This prospective observational cohort study will follow a subset of participants previously randomized as part of the RAPIDIRON Trial and their newborns. Study visits occur at birth, 6 weeks, 4 months, 12 months, 24 months, and 36 months and include blood sample collection with both maternal and infant participants and specific neurobehavioral assessments conducted with the infants (depending on the study visit). The primary outcomes of interest are (1) infant iron status as indicated by both hemoglobin and ferritin (a) at birth and (b) at 4 months of age and (2) the developmental quotient (DQ) for the cognitive domain of the Bayley Scales of Infant Development Version IV (BSID-IV) at 24 months of age. DISCUSSION: This RAPIDIRON-KIDS Study builds upon its parent RAPIDIRON Trial by following a subset of the previously randomized participants and their offspring through the first 3 years of life to assess neurodevelopmental and neurobehavioral (infants, children), hematological, and health outcomes. TRIAL REGISTRATION: ClinicalTrials.gov NCT05504863 , Registered on 17 August 2022. Clinical Trials Registry - India CTRI/2022/05/042933 . Registered on 31 May 2022.


Assuntos
Anemia , Deficiências de Ferro , Feminino , Humanos , Lactente , Recém-Nascido , Gravidez , Anemia/complicações , Seguimentos , Hemoglobinas , Ferro , Estudos Observacionais como Assunto , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto , Pré-Escolar
20.
Rev Bras Ginecol Obstet ; 44(3): 214-219, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35100630

RESUMO

OBJECTIVE: To assess the influence of oxidative stress on the gene expression of nitric oxide synthases (NOS 3 and NOS 2) and, hence, the cardiovascular responses in preeclampsia. METHODS: This was a case control study in which patients with preeclampsia (PE group) and normal pregnancy controls (NP group) were included according to the guidelines of the American College of Obstetricians and Gynecologists (ACOG). The serum levels of malondialdehyde (MDA), total antioxidant capacity, and nitric oxide (NO) were estimated, and the heart rate and mean arterial pressure were recorded. The gene profiling of NOS3 and NOS2 was performed through real-time polymerase chain reaction (RT-PCR). The statistical analysis was performed using the Student t-test, and values of p < 0.05 were considered statistically significant. RESULTS: The serum levels of malondialdehyde were increased (p < 0.0001), and the total antioxidant capacity was reduced in the PE group (p = 0.034), indicating oxidative stress. In the PE group, the mean arterial pressure was significantly higher (p < 0.0001), but the serum levels of NO did not show a statistically significant reduction (p = 0.20). The gene expression profiling of NOS3 and NOS2 revealed a down regulation in the PE group by 8.49 and 51.05 times respectively. CONCLUSION: Oxidative stress may lead to endothelial dysfunction, which could result in increased mean arterial pressure. Nitric oxide may play a role in this mechanism, but interactions with other vasoactive /biological substances cannot be overlooked, as the gene expression of NOS3 and NOS2 has been reduced.


OBJETIVO: Avaliar a influência do estresse oxidativo na expressão genética das óxido nítrico sintases (nitric oxide synthases, NOS, em inglês; NOS 3 e NOS 2) e, consequentemente, nas respostas cardiovasculares na pré-eclâmpsia. MéTODOS: Este foi um estudo caso-controle no qual pacientes com pré-eclâmpsia (grupo PE) e controles com gravidez normal (grupo GN) foram incluídos de acordo com as diretrizes do American College of Obstetricians and Gynecologists (ACOG). Foram estimados os níveis séricos de malondialdeído (MDA) da capacidade antioxidante total, e de óxido nítrico (nitric oxide, NO, em inglês). A frequência cardíaca e a pressão arterial média foram registradas. O perfil genético da NOS3 e da NOS2 foi feito por reação em cadeia de polimerase em tempo real (real-time polymerase chain reaction, RT-PCR, em inglês). A análise estatística foi feita utilizando-se o teste t de Student, e valores de p < 0,05 foram considerados estatisticamente significativos. RESULTADOS: Os níveis séricos de malondialdeído sérico estavam aumentados (p < 0,0001), e a capacidade antioxidante total, reduzida no grupo PE (p = 0,034), o que indicava estresse oxidativo. No grupo PE, a pressão arterial média era significativamente maior (p < 0,0001), mas os níveis séricos de NO não demostraram redução estatisticamente significativa (p = 0,20). O perfil de expressão genética da NOS3 e da NOS2 revelou uma regulação negativa no grupo PE de 8,49 e 51,05 vezes, respectivamente. CONCLUSãO: O estresse oxidativo pode levar à disfunção endotelial, o que pode resultar em aumento da pressão arterial média. O NO pode desempenhar um papel neste mecanismo, mas as interações com outras substâncias vasoativas/biológicas não podem ser negligenciadas, uma vez que a expressão genética da NOS3 e da NOS2 foi reduzida.


Assuntos
Pré-Eclâmpsia , Antioxidantes , Estudos de Casos e Controles , Feminino , Expressão Gênica , Humanos , Malondialdeído , Óxido Nítrico , Óxido Nítrico Sintase/genética , Óxido Nítrico Sintase Tipo II , Óxido Nítrico Sintase Tipo III/genética , Estresse Oxidativo , Pré-Eclâmpsia/genética , Gravidez
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