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1.
BMC Public Health ; 22(1): 2418, 2022 12 23.
Artículo en Inglés | MEDLINE | ID: mdl-36550543

RESUMEN

BACKGROUND: COVID-19 vaccines are recommended for pregnant and lactating individuals, and there is substantial evidence for their safety and effectiveness. As the pandemic continues, information on worries and beliefs surrounding perinatal COVID-19 vaccination remains important to inform efforts aimed at improving vaccine uptake. Our objectives were to assess factors associated with COVID-19 vaccination among perinatal individuals; and to explore motivational factors associated with willingness to be vaccinated among unvaccinated perinatal individuals. METHODS: This was a cross-sectional web-based survey of preconception, pregnant, and lactating individuals in Canada. The outcomes of interest were vaccination with at least one dose of any COVID-19 vaccine and willingness to be vaccinated among unvaccinated individuals. Sample characteristics were summarized using frequencies and percentages. The association between eight prespecified risk factors and two outcomes (vaccination status and willingness to be vaccinated) was assessed by logistic regression. Odds ratios (OR) and 95% confidence intervals (CI) were calculated for the total sample, and across perinatal sub-groups. RESULTS: Among 3446 survey respondents, there were 447 (13.0%) preconception, 1832 (53.2%) pregnant, and 1167 (42.4%) lactating. There were 1460 (42.4%) and 1982 (57.5%) who were vaccinated and unvaccinated, respectively. Factors positively associated with COVID-19 vaccine status were speaking to a healthcare provider about vaccination during the perinatal period (aOR:2.35, 95% CI:1.97-2.80) and believing that the COVID-19 vaccine is effective (aOR:1.91, 95% CI:1.46-2.48). Factors negatively associated with vaccine status included worries about fetal growth and development (aOR:0.55, 95% CI:0.43-0.70) and future child behavioral/neurodevelopmental problems (aOR:0.59, 95% CI:0.46-0.75). Among unvaccinated individuals specifically, characteristics positively associated with willingness to vaccinate were speaking to a healthcare provider (aOR:1.67, 95% CI:1.32-2.12) and believing the COVID-19 vaccine is effective (aOR:3.56, 95% CI:2.70-4.69). Factors negatively associated with willingness were concerns over infertility (aOR:0.66, 95% CI:0.49-0.88), fetal growth and development (aOR:0.33, 95% CI:0.24-0.46), and future child behavioral/neurodevelopmental problems (aOR:0.64, 95% CI:0.48-0.84). CONCLUSIONS: In this Canadian perinatal population, approximately 42% reported COVID-19 vaccination. Among unvaccinated individuals, willingness to receive vaccination was high (73%). Factors enhancing vaccine willingness included discussions with healthcare providers and believing the vaccine was effective. Concerns regarding vaccine safety, particularly with respect to fetal/child development, were the greatest barriers to vaccine uptake.


Asunto(s)
Vacunas contra la COVID-19 , COVID-19 , Niño , Femenino , Embarazo , Humanos , Estudios Transversales , Lactancia , COVID-19/epidemiología , COVID-19/prevención & control , Canadá/epidemiología , Vacunación
2.
Reprod Toxicol ; 113: 155-169, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-36100136

RESUMEN

Increasing evidence suggests that influenza infection in pregnancy may disrupt fetal neurodevelopment. The impact of maternal influenza infection on offspring neuropsychiatric health has not been comprehensively reviewed. We systematically reviewed comparative studies evaluating associations between maternal influenza infection and neuropsychiatric health outcomes in offspring. We searched MEDLINE, EMBASE, CINAHL, and Web of Science for articles published until January 7, 2022. Included were English studies evaluating neuropsychiatric outcomes in offspring aged > 6 months born to women with and without influenza during pregnancy, defined as clinical or laboratory-confirmed influenza illness, or being pregnant during pandemics/epidemics. Of 12,010 records screened, 42 studies were included. Heterogeneity in study design, exposures, and outcome definitions precluded meta-analyses. Four of 14 studies assessing schizophrenia reported adjusted ratio estimates from 0.5 to 8.2; most 95% CIs contained the null value; study quality was high in three of four. Two studies reported an increased risk of schizophrenia with influenza exposure any time during pregnancy (adjusted incidence rate ratio 8.2, 95% CI: 1.4-48.8; adjusted odds ratio 1.3, 95% CI: 1.2-1.5); another reported a reduced risk with first-trimester exposure (adjusted risk ratio 0.5, 95% CI: 0.3-0.9). Seven studies of autism spectrum disorder reported adjusted ratio estimates from 0.9 to 4.0; all 95% CIs included the null value; study quality was high in four. No conclusions could be drawn about the association between exposure to maternal influenza and neuropsychiatric outcomes due to the limited quantity and quality of available research. Large observational studies with long-term follow-up are required to investigate these associations.


Asunto(s)
Trastorno del Espectro Autista , Gripe Humana , Trastorno del Espectro Autista/epidemiología , Femenino , Humanos , Gripe Humana/complicaciones , Gripe Humana/epidemiología , Oportunidad Relativa , Embarazo , Primer Trimestre del Embarazo , Atención Prenatal
3.
BMJ Open ; 12(7): e061778, 2022 07 29.
Artículo en Inglés | MEDLINE | ID: mdl-35906061

RESUMEN

INTRODUCTION: The novel SARS-CoV-2 pandemic has provided a set of unique challenges for paediatric patients requiring emergency care across the globe. Reduction in paediatric emergency department (ED) usage during the COVID-19 pandemic has been widely reported, but no studies to date have consolidated and described what ramifications these reductions may have on neonatal and infant health. This scoping review aims to characterise the impact of the COVID-19 pandemic on infant ED visits and neonatal and infant health. METHODS AND ANALYSIS: A comprehensive literature search will be conducted from March 2020 to July 2022 using the following databases: Embase (Ovid), Web of Science (Clarivate Analytics), Medline (Ovid) and CINAHL (EBSCOhost). This scoping review will use a five-step framework to guide the selection, extraction and analysis of data from eligible studies, with an additional sixth step for clinical consultation. Studies in English reporting the effect of the COVID-19 pandemic on infant ED visits, as well as neonatal and infant health, will be included for screening. Key findings will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews. ETHICS AND DISSEMINATION: Research ethics board approval will not be required due to the nature of the study design. The results of this scoping review will be disseminated through publication in a peer-reviewed journal and presentation at academic conferences.


Asunto(s)
COVID-19 , COVID-19/epidemiología , Niño , Servicio de Urgencia en Hospital , Humanos , Salud del Lactante , Recién Nacido , Pandemias/prevención & control , Proyectos de Investigación , Literatura de Revisión como Asunto , SARS-CoV-2 , Revisiones Sistemáticas como Asunto
4.
CMAJ Open ; 10(3): E643-E651, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35820683

RESUMEN

BACKGROUND: There is limited information on the prevalence of SARS-CoV-2 infection in obstetric settings in Canada, beyond the first wave of the COVID-19 pandemic (February to June 2020). We sought to describe the prevalence of SARS-CoV-2 infection in pregnant people admitted to triage units at a tertiary care hospital in Ottawa, Canada. METHODS: We conducted a descriptive study of pregnant people admitted to obstetric triage assessment units at The Ottawa Hospital between Oct. 19 and Nov. 27, 2020 (second local wave of the COVID-19 pandemic). Participants underwent SARS-CoV-2 polymerase chain reaction (PCR) (via naso- or oropharyngeal swabs) and serology testing upon admission. We excluded individuals younger than 18 years, those who did not speak English or French, those who enrolled in conflicting studies, those admitted for pregnancy termination and those triaged between 11:31 pm and 7:29 am. Swab and serology samples were analyzed using digital droplet PCR and enzyme-linked immunosorbent assays, respectively. We defined SARS-CoV-2 seropositivity as a positive result for immunoglobulin (Ig) G, either alone or in combination with IgM or IgA. RESULTS: Of the 632 eligible patients, 363 (57.4%) consented to participation and 362 collectively provided 284 swab and 352 blood samples eligible for analysis. Common reasons for declining participation included feeling overwhelmed or anxious, being worried about repercussions of testing, pain or discomfort with testing or disinterest in research. Participants were mostly multiparous (53.9%) and in their third trimester upon admission (88.4%). In all, 18 (4.9%) participants had evidence of SARS-CoV-2 exposure; 2 (0.7%) of 284 were positive for SARS-CoV-2 by PCR and 16 (4.5%) of 352 were positive for IgG antibodies to SARS-CoV-2. INTERPRETATION: During the second local wave of the COVID-19 pandemic, the prevalence of active SARS-CoV-2 infection among obstetric patients in Ottawa was 0.7% and seroprevalence was 4.5%. Our low participation rate highlights the need for improvements in patient education and public health messaging on the benefits of SARS-CoV-2 testing programs.


Asunto(s)
COVID-19 , Anticuerpos Antivirales , COVID-19/diagnóstico , COVID-19/epidemiología , Prueba de COVID-19 , Canadá/epidemiología , Humanos , Inmunoglobulina G , Pandemias , Prevalencia , SARS-CoV-2/genética , Estudios Seroepidemiológicos
5.
Womens Health (Lond) ; 18: 17455057221103101, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35686846

RESUMEN

OBJECTIVES: The aim of this study was to describe the psychological impact of the COVID-19 pandemic and the specific impact of a universal SARS-CoV-2 testing programme on obstetric patients and healthcare workers at The Ottawa Hospital. METHODS: This was a follow-up survey study of obstetric healthcare workers and then-pregnant patients who participated in a SARS-CoV-2 testing programme conducted in The Ottawa Hospital obstetrical triage units from 19 October to 17 November 2020. Surveys explored the effects of the COVID-19 pandemic and the testing programme on participants' psychological well-being. Responses were collected from April to September 2021. Descriptive summary statistics were calculated for both groups. RESULTS: During hospitalization for delivery, obstetric patients (n = 143) worried about giving COVID-19 to their new baby (88.11%), catching COVID-19 (83.22%), and giving COVID-19 to their partner (76.22%). Patients felt relief at being tested for COVID-19 during the universal testing programme (24.65%) and at getting their results (28.87%). Patients also believed that universal SARS-CoV-2 testing was a good way to slow COVID-19 spread (79.72%), reduce anxiety (75.52%), and increase relief (76.22%). In addition, patients felt good about participating in research that could help others (91.61%). Among obstetric healthcare workers (n = 94), job satisfaction decreased and job stress increased during the COVID-19 pandemic. The universal testing programme led to minor increases in healthcare worker job stress and burden, particularly among nurses, but the majority (85.23%) believed it was a valuable research initiative. CONCLUSION: The COVID-19 pandemic has had a negative psychological impact on obstetric patients and healthcare workers. Universal SARS-CoV-2 testing was generally viewed favourably and may serve as an effective strategy for estimating COVID-19 prevalence without adding undue stress onto patients and healthcare workers during the pandemic.


Asunto(s)
COVID-19 , Estrés Laboral , COVID-19/diagnóstico , COVID-19/epidemiología , Prueba de COVID-19 , Femenino , Personal de Salud/psicología , Humanos , Pandemias , Embarazo , SARS-CoV-2
6.
J Perinat Med ; 50(8): 1096-1099, 2022 Oct 26.
Artículo en Inglés | MEDLINE | ID: mdl-35589556

RESUMEN

OBJECTIVES: The establishment of cut-offs for normal amniotic fluid volume (AFV) is valuable to predict perinatal outcomes. However, the most common methods to measure AFV are not accurate enough. It is important to understand factors that may be able to increase the accuracy of the calculation of AFV cut-off values. The objective of this study was to verify the correlation between AFV and estimated fetal weight (EFW). METHODS: Records from almost 7,000 patients between 2012 and 2017 were accessed through hospital databases. The AFV measurements included in our analysis were obtained using the maximum vertical pocket technique. RESULTS: AFV was positively correlated with EFW in the overall, male and female samples; however, the magnitude of the association was small (0.1

Asunto(s)
Líquido Amniótico , Peso Fetal , Líquido Amniótico/diagnóstico por imagen , Femenino , Edad Gestacional , Humanos , Masculino , Embarazo , Mujeres Embarazadas , Atención Prenatal , Ultrasonografía Prenatal
7.
Artículo en Inglés | MEDLINE | ID: mdl-35206265

RESUMEN

Obesity is a well-recognized risk factor for pregnancy complications. Most studies to date are in large cohorts, with results presented in a way that assumes all women living with obesity are at equal risk. This study investigates which women living with obesity are at higher risk of specific pregnancy complications. A systematic search of MEDLINE and Embase identified 7894 prospective or retrospective cohort studies exploring predictors of adverse outcomes among pregnant women living with obesity. Following screening, 61 studies were deemed eligible. Studies were selected if the effects of exposure to any predictor amongst pregnant women living with obesity could be collected. Maternal characteristics assessed for association with adverse outcomes included maternal age, race/ethnicity, maternal height, mode of conception, complement activation factors, and history of various comorbidities/procedures. Gestational diabetes mellitus was the most studied outcome (n = 32), followed by preterm birth (n = 29), preeclampsia (n = 27), low birthweight infants (n = 20), small for gestational age newborns (n = 12), and stillbirth (n = 7). This review identified important characteristics that should be considered during the screening and follow-up sessions of pregnant women living with obesity, including pre-existing type 1 diabetes, maternal age < 20 years or ≥35 years, non-White ethnicity, abdominal adiposity obesity, and history of bariatric surgery.


Asunto(s)
Complicaciones del Embarazo , Nacimiento Prematuro , Adulto , Femenino , Humanos , Lactante , Recién Nacido , Obesidad/epidemiología , Embarazo , Complicaciones del Embarazo/epidemiología , Resultado del Embarazo/epidemiología , Mujeres Embarazadas , Estudios Prospectivos , Estudios Retrospectivos , Adulto Joven
8.
Paediatr Perinat Epidemiol ; 36(1): 144-155, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34396579

RESUMEN

BACKGROUND: Studies suggest maternal weight and weight gain during pregnancy may influence foetal immunological development. However, their role in the aetiology of allergic disease is unclear. OBJECTIVES: We sought to examine the impact of maternal pre-pregnancy body mass index (BMI) and gestational weight gain (GWG) on the incidence of four common paediatric allergic diseases. METHODS: We conducted a retrospective, population-based cohort study of all singleton live births in Ontario, Canada between 2012 and 2014, using maternal-newborn records from the provincial birth registry linked with health administrative databases. Neonates were followed up to 7 years for anaphylaxis, asthma, dermatitis and rhinitis, identified through validated algorithms based on healthcare encounters. We multiply imputed missing data and employed Cox proportional-hazards models to calculate adjusted hazard ratios (aHR) with 95% confidence intervals (CI). To test the robustness of our findings, we also conducted several sensitivity analyses, including probabilistic bias analyses for exposure and outcome misclassification. All methods were prespecified in a published protocol. RESULTS: Of the 248,017 infants followed, 52% were born to mothers with a pre-pregnancy BMI in the normal range and only 19% were born to mothers with adequate weight gain during pregnancy. Incidence rates (per 100,000 person-days) for anaphylaxis, asthma, dermatitis and rhinitis were 0.22, 6.80, 12.41 and 1.54, respectively. Compared with normal BMI, maternal obesity was associated with increased hazards of asthma in offspring (aHR 1.08, 95% CI 1.05, 1.11), but decreased hazards of anaphylaxis (aHR 0.83, 95% CI 0.69, 0.99) and dermatitis (aHR 0.97, 95% CI 0.94, 0.99). In contrast, maternal underweight was associated with increased hazards of dermatitis (aHR 1.06, 95% CI 1.02, 1.10). We found no associations between pre-pregnancy BMI and rhinitis or GWG and any allergic outcome, and no evidence of effect measures modification by infant sex. CONCLUSIONS: These findings provide support for the involvement of maternal pre-pregnancy BMI in paediatric allergic disease development.


Asunto(s)
Ganancia de Peso Gestacional , Índice de Masa Corporal , Niño , Estudios de Cohortes , Femenino , Humanos , Ontario/epidemiología , Sobrepeso , Embarazo , Estudios Retrospectivos
9.
CMAJ Open ; 10(4): E1017-E1026, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36735222

RESUMEN

BACKGROUND: In February 2018, Canada's National Advisory Committee on Immunization (NACI) recommended tetanus toxoid, reduced diphtheria toxoid and acellular pertussis (Tdap) vaccination during pregnancy to protect newborns against pertussis infection. We sought to describe pre- and postrecommendation trends in Tdap vaccination coverage among pregnant Ontario residents. METHODS: Using linked health administrative databases, we conducted a population-based retrospective cohort study of all pregnant individuals who gave birth in Ontario hospitals between April 2012 and March 2020. We described Tdap vaccination patterns in pregnancy for the entire study period and before and after the NACI recommendation. We used log-binomial regression to identify characteristics associated with Tdap vaccination during pregnancy. RESULTS: Among the 991 850 deliveries included, 7.0% of pregnant individuals received the Tdap vaccination during pregnancy. Vaccine coverage increased from 0.4% in 2011/12 to 29.2% in 2019/20. Coverage was highest among individuals who were older, had no previous live births, had adequate prenatal care and received maternity care primarily from a family physician. After adjustment, characteristics associated with lower coverage included younger maternal age, having a multiple birth, residing in a rural location and higher area material deprivation. In 2019/20, 71.0% of vaccinated individuals received the Tdap vaccination during the recommended gestational window (27-32 wk). Stratified analyses of the pre- and postrecommendation cohorts yielded similar findings to the main analyses with a few gradient differences after adjustment. INTERPRETATION: During pregnancy, Tdap vaccination coverage increased substantially in Ontario between 2011/12 and 2019/20, most notably after recommendations for universal Tdap vaccination during pregnancy began in Canada. To further improve vaccine coverage in the obstetric setting, public health strategies should consider tailoring their programs to reach subpopulations with lower vaccine coverage.


Asunto(s)
Vacunas contra Difteria, Tétanos y Tos Ferina Acelular , Servicios de Salud Materna , Tos Ferina , Femenino , Humanos , Embarazo , Recién Nacido , Toxoides , Tos Ferina/epidemiología , Tos Ferina/prevención & control , Estudios Retrospectivos , Ontario/epidemiología , Vacunación
10.
CMAJ ; 193(18): E634-E644, 2021 05 03.
Artículo en Inglés | MEDLINE | ID: mdl-33941522

RESUMEN

BACKGROUND: Data on the effect of cesarean delivery on maternal request (CDMR) on maternal and neonatal outcomes are inconsistent and often limited by inadequate case definitions and other methodological issues. Our objective was to evaluate the trends, determinants and outcomes of CDMR using an intent-to-treat approach. METHODS: We designed a population-based retrospective cohort study using data on low-risk pregnancies in Ontario, Canada (April 2012-March 2018). We assessed temporal trends and determinants of CDMR. We estimated the relative risks for component and composite outcomes used in the Adverse Outcome Index (AOI) related to planned CDMR compared with planned vaginal delivery using generalized estimating equation models. We compared the Weighted Adverse Outcome Score (WAOS) and the Severity Index (SI) across planned modes of delivery using analysis of variance. RESULTS: Of 422 210 women, 0.4% (n = 1827) had a planned CDMR and 99.6% (n = 420 383) had a planned vaginal delivery. The prevalence of CDMR remained stable over time at 3.9% of all cesarean deliveries. Factors associated with CDMR included late maternal age, higher education, conception via in vitro fertilization, anxiety, nulliparity, being White, delivery at a hospital providing higher levels of maternal care and obstetrician-based antenatal care. Women who planned CDMR had a lower risk of adverse outcomes than women who planned vaginal delivery (adjusted relative risk 0.42, 95% confidence interval [CI] 0.33 to 0.53). The WAOS was lower for planned CDMR than planned vaginal delivery (mean difference -1.28, 95% CI -2.02 to -0.55). The SI was not statistically different between groups (mean difference 3.6, 95% CI -7.4 to 14.5). INTERPRETATION: Rates of CDMR have not increased in Ontario. Planned CDMR is associated with a decreased risk of short-term adverse outcomes compared with planned vaginal delivery. Investigation into the long-term implications of CDMR is warranted.


Asunto(s)
Cesárea/estadística & datos numéricos , Parto Obstétrico/métodos , Procedimientos Quirúrgicos Electivos/psicología , Prioridad del Paciente , Adulto , Canadá/epidemiología , Cesárea/efectos adversos , Estudios de Cohortes , Procedimientos Quirúrgicos Electivos/estadística & datos numéricos , Femenino , Humanos , Recién Nacido , Edad Materna , Paridad , Vigilancia de la Población , Embarazo , Resultado del Embarazo/epidemiología , Estudios Retrospectivos
11.
CMAJ Open ; 9(2): E349, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33849984

RESUMEN

BACKGROUND: In February 2018, Canada's National Advisory Committee on Immunization recommended maternal vaccination with tetanus-diphtheria-acellular pertussis (Tdap) vaccine during pregnancy to prevent severe pertussis infection in young infants. This study assessed the relation between maternal Tdap vaccination and obstetric and perinatal outcomes in Ontario. METHODS: We performed a population-based cohort study of all births from April 2012 to March 2017 using multiple linked health administrative databases. We used Cox regression with a time-dependent exposure variable to estimate adjusted hazard ratios (HRs) for preterm birth (< 37 wk), very preterm birth (< 32 wk) and stillbirth. We assessed remaining outcomes (gestational hypertension, chorioamnionitis, postpartum hemorrhage, severe postpartum hemorrhage, being small for gestational age, neonatal intensive care unit stay > 24 h, composite neonatal morbidity) using log-binomial regression to generate adjusted risk ratios (RRs). We adjusted estimates for potential confounding using propensity score weighting. RESULTS: Of 615 213 infants (live births and stillbirths), 11 519 were exposed to Tdap vaccination in utero. There was no increased risk for preterm birth (adjusted HR 0.98, 95% confidence interval [CI] 0.91-1.06), very preterm birth (adjusted HR 1.10, 95% CI 0.86-1.41), stillbirth (adjusted HR 1.15, 95% CI 0.82-1.60) or being small for gestational age (adjusted RR 0.96, 95% CI 0.90-1.02). The risks of a neonatal intensive care unit stay exceeding 24 hours (adjusted RR 0.82, 95% CI 0.76-0.88) and neonatal morbidity (adjusted RR 0.81, 95% CI 0.75-0.87) were decreased. There was no association with chorioamnionitis (adjusted RR 1.17, 95% CI 0.99-1.39), postpartum hemorrhage (adjusted RR 1.01, 95% CI 0.91-1.13) or severe postpartum hemorrhage (adjusted RR 0.79, 95% CI 0.55-1.13), but we observed a reduced risk of gestational hypertension (adjusted RR 0.87, 95% CI 0.78-0.96). INTERPRETATION: Our results complement evidence that maternal Tdap vaccination is not associated with adverse outcomes in mothers or infants. Ongoing evaluation in Canada is needed as maternal Tdap vaccination coverage increases in coming years.


Asunto(s)
Vacunas contra Difteria, Tétanos y Tos Ferina Acelular/uso terapéutico , Enfermedades del Recién Nacido , Servicios de Salud Materna , Resultado del Embarazo/epidemiología , Vacunación , Tos Ferina , Canadá/epidemiología , Corioamnionitis/epidemiología , Corioamnionitis/etiología , Femenino , Humanos , Hipertensión Inducida en el Embarazo/epidemiología , Hipertensión Inducida en el Embarazo/etiología , Recién Nacido , Enfermedades del Recién Nacido/epidemiología , Enfermedades del Recién Nacido/prevención & control , Recién Nacido Pequeño para la Edad Gestacional , Servicios de Salud Materna/normas , Servicios de Salud Materna/estadística & datos numéricos , Hemorragia Posparto/epidemiología , Hemorragia Posparto/etiología , Embarazo , Nacimiento Prematuro/epidemiología , Nacimiento Prematuro/etiología , Mortinato/epidemiología , Vacunación/métodos , Vacunación/estadística & datos numéricos , Cobertura de Vacunación/tendencias , Tos Ferina/epidemiología , Tos Ferina/prevención & control
12.
Pediatrics ; 147(5)2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33875535

RESUMEN

BACKGROUND AND OBJECTIVES: Maternal immunization with tetanus, diphtheria, and acellular pertussis vaccine (Tdap) is routinely recommended in many countries as a strategy to protect young infants against severe pertussis infection; few studies have assessed whether prenatal exposure to the vaccine is associated with any longer-term adverse health effects in children. We evaluated the long-term safety of exposure to Tdap vaccination during pregnancy. METHODS: Population-based retrospective cohort study conducted in Ontario, Canada using multiple linked province-wide health administrative databases. All live births between April 2012 and March 2017 were included, and children were followed for up to 6 years to ascertain study outcomes. Children exposed to prenatal Tdap were propensity score matched to unexposed children at a 1:5 ratio. Tdap vaccination during pregnancy was ascertained by using vaccine-specific fee codes. Immune-related (infectious diseases, asthma) and nonimmune-related (neoplasm, sensory disorders) outcomes and a nonspecific morbidity outcome (urgent or inpatient health service use) were evaluated from birth to end of follow-up. RESULTS: Of 625 643 live births, 12 045 (1.9%) were exposed to Tdap in utero. There were no significant increased risks of adverse childhood outcomes and prenatal Tdap exposure; however, we observed inverse associations (adjusted incidence rate ratio [95% confidence interval]) with upper respiratory infections (0.94 [0.90-0.99]), gastrointestinal infections (0.85 [0.79-0.91]), and urgent and inpatient health service use (0.93 [0.91-0.96]). CONCLUSIONS: Exposure to Tdap vaccination in pregnancy was not associated with any increased risk of adverse health outcomes in early childhood, supporting the long-term safety of Tdap administration in pregnancy.


Asunto(s)
Vacunas contra Difteria, Tétanos y Tos Ferina Acelular/efectos adversos , Efectos Tardíos de la Exposición Prenatal/etiología , Niño , Preescolar , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Humanos , Lactante , Recién Nacido , Embarazo , Estudios Retrospectivos , Resultado del Tratamiento
13.
BMJ Paediatr Open ; 5(1): e000893, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33458255

RESUMEN

Introduction: Over the last 20 years, excess maternal pre-pregnancy weight (overweight and obesity) and gestational weight gain have become the most common morbidities in pregnancy. These morbidities may pose a threat to fetal immunological development through associated metabolic dysfunction and inflammation and, as such, may partly explain the concurrent rise of paediatric allergic disease. We will examine the effect of maternal pre-pregnancy weight and gestational weight gain during pregnancy on the incidence of allergic diseases among offspring in Canada's most populous province. Methods and analysis: We will conduct a retrospective, population-based cohort study of all singleton live births to residents of Ontario, Canada in 2012-2013 and 2013-2014. The study population will be defined using maternal-newborn records from the provincial birth registry, which captures information on maternal pre-pregnancy weight and gestational weight gain. The cohort will be linked with provincial health administrative databases, allowing for follow-up of neonates through early childhood until 2019 (5-7 years of age). Allergic disease development (asthma, rhinitis, atopic dermatitis and anaphylaxis) will be ascertained using diagnostic codes from healthcare encounters. Potential confounders have been identified a priori through a directed acyclic graph. Cox proportional hazards regression models will be employed to assess the associations between maternal pre-pregnancy weight, gestational weight gain and incident paediatric allergic disease. Several preplanned sensitivity analyses will be conducted, including a probabilistic bias analysis of outcome misclassification. Ethics and dissemination: Ethics approval was obtained from the Research Ethics Board of the Children's Hospital of Eastern Ontario and the ICES Privacy Office. Findings will be disseminated in scientific conference presentations and peer-reviewed publications.


Asunto(s)
Ganancia de Peso Gestacional , Índice de Masa Corporal , Niño , Preescolar , Estudios de Cohortes , Femenino , Humanos , Recién Nacido , Ontario/epidemiología , Embarazo , Estudios Retrospectivos
14.
Obes Rev ; 21(3): e12972, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31943650

RESUMEN

Multiple clinical practice guidelines (CPGs) have been established for pregnant women with obesity. The quality and consistency of recommendations remain unknown. The objective of this study is to conduct a systematic review to synthesize and appraise evidence from CPGs, available worldwide, for pregnant women affected by obesity. An experienced information specialist performed a rigorous search of the literature, searching MEDLINE, Embase, grey literature, and guideline registries to locate CPGs that reported on pregnancy care relating to obesity. CPGs related to antenatal care of pregnant women with obesity (pre-pregnancy body mass index [BMI] ≥ 30 kg/m2 ) in low-risk (eg, care provider = family physician or midwife) or high-risk settings (eg, obstetrician or maternal fetal medicine) were included. CPGs were appraised for quality with independent data collection by two raters. Information was categorized into five domains: preconception care. care during pregnancy, diet and exercise during pregnancy, care immediately before, during, and after delivery, and postpartum care. The literature search yielded 2614 unique citations. Following screening of abstracts and full texts, 32 CPGs were included, with quality ranging between 0 and 100 on the AGREE II tool. The strongest evidence related to nutritional advice, exercise, and pregnancy risk counselling. Guidance was limited for timing of screening tests, antenatal visits and delivery, ideal postpartum care, and management of adverse pregnancy outcomes. Most guidelines in this population are not evidence based. Research is needed to bridge knowledge gaps pertaining to fetal antenatal surveillance, management of adverse outcomes and postpartum care, and enhance consistency across CPGs.


Asunto(s)
Obesidad/terapia , Guías de Práctica Clínica como Asunto , Atención Preconceptiva/métodos , Complicaciones del Embarazo/terapia , Resultado del Embarazo , Atención Prenatal/métodos , Dieta/métodos , Ejercicio Físico , Femenino , Humanos , Embarazo
15.
J Perinat Educ ; 26(4): 195-207, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-30804655

RESUMEN

Primipara women may require greater informational and emotional support than multipara women. Supportive communication, including informational and emotional support, can help to build a strong caregiver-patient relationship and can alleviate the difficulties associated with first-time birth. The objective of this study was to explore first-time mothers' experiences of labor and birth. Three hundred primipara women completed self-report questionnaires. Qualitative analysis of one open-ended question about the women's experience was conducted. Nine themes emerged from the data. Eight themes reflected informational and emotional support needs, whereas the final theme reflected instrumental support needs. The study concluded that informational and emotional supports are important factors of supportive communication and influence the birthing experience of primipara women.

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