Description of maternal and neonatal adverse events in pregnant people immunised with COVID-19 vaccines during pregnancy in the CLAP NETWORK of sentinel sites. Nested case-control analysis of the immunization-associated risk: A study protocol.

INTRODUCTION: COVID-19 is associated with higher morbimortality in pregnant people compared with non-pregnant people. At present, the benefits of maternal immunisation are considered to outweigh the risks, and therefore, vaccination is recommended during pregnancy. However, additional information is needed on the safety of the vaccines in this population. METHODS AND ANALYSIS: This a retrospective cohort nested case-control study in pregnant people who attended maternity hospitals from eight Latin American and Caribbean countries. A perinatal electronic clinical history database with neonatal and obstetric information will be used. The proportion of pregnant people immunised with COVID-19 vaccines of the following maternal and neonatal events will be described: preterm infant, small for gestational age, low birth weight, stillbirth, neonatal death, congenital malformations, maternal near miss and maternal death. Moreover, the risk of prematurity, small for gestational age and low birth weight associated with exposure to COVID-19 vaccines will be estimated. Each case will be matched with two groups of three randomly selected controls. Controls will be matched by hospital and mother's age (±3 years) with an additional matching by delivery date and conception time in the first and second control groups, respectively. The estimated required sample size for the main analysis (exposure to any vaccine) concerning 'non-use' is at least 1009 cases (3027 controls) to detect an increased probability of vaccine-associated event risk of 30% and at least 650 cases (1950 controls) to detect 30% protection. Sensitivity and secondary analyses considering country, type of vaccine, exposure windows and completeness of immunisation will be reported. ETHICS: The study protocol was reviewed by the Ethical Review Committee on Research of the Pan American Health Organization. Patient informed consent was waived due to the retrospective design and the utilisation of anonymised data (Ref. No: PAHOERC.0546.01). Results will be disseminated in open access journals.

Prevalencia de déficit de vitamina B12 en sangre periférica de madres cursando el puerperio inmediato en el Centro Hospitalario Pereira Rossell

Objetivo: evaluar la prevalencia del déficit de vitamina B12 en mujeres cursando puerperio inmediato. Material y método: estudio observacional descriptivo de captación prospectiva de la cohorte en estudio. Muestra de 133 mujeres cursando el tercer trimestre de embarazo en la maternidad del Centro Hospitalario Pereira Rossell (CHPR), Montevideo, Uruguay, entre setiembre de 2021 y octubre de 2022. Se obtuvieron muestras de sangre materna en el puerperio inmediato por punción venosa periférica. Estas muestras fueron procesadas mediante inmunoensayo de electroquimioluminiscencia. Además, se aplicó una entrevista para la evaluación de los hábitos nutricionales. Resultados: todas las pacientes reportaron tener una dieta omnívora, excepto una, que manifestó llevar una dieta vegana y recibía suplementación diaria de vitamina B12. El 75,9% de la muestra del estudio presentó un nivel socioeconómico bajo, puntuado según el cuestionario de medición de nivel socioeconómico del INSE (Índice de nivel socioeconómico, 2018 - Cámara de Empresas de Investigación Social y Mercado del Uruguay, CEISMU). Se registró una prevalencia de déficit de vitamina B12 de 39,10% (n: 52). Conclusiones: a pesar de que esta muestra de embarazadas presenta una dieta omnívora, se detectó una elevada prevalencia de déficit de vitamina B12. Dada la importancia de esta vitamina en la salud materna, fetal y neonatal, se deberían considerar políticas de salud pública de prevención de la deficiencia tanto en embarazadas como en madres lactantes.

Objective: To assess the prevalence of vitamin B12 deficiency in women during the immediate postpartum period. Method: Descriptive observational study with prospective cohort recruitment, involving a sample of 133 women in their third trimester of pregnancy at the Maternity Department of the Pereira Rossell Hospital Center (CHPR) in Montevideo, Uruguay, between September 2021 and October 2022. Maternal blood samples were obtained during the immediate postpartum period through peripheral venous puncture. These samples were processed using electrochemiluminescence (ECL) immunoassay. Additionally, a nutritional interview was conducted to assess dietary habits. Results: All patients reported following an omnivorous diet, except for one who reported following a vegan diet and received daily vitamin B12 supplementation. Seventy-five point nine percent (75.9%) of the study sample exhibited a low socioeconomic status as determined by the Socioeconomic Level Measurement Questionnaire of the INSE (Socioeconomic Level Index, 2018 - CEISMU, Uruguay). Resulting in a vitamin B12 deficiency prevalence of 39.10% (n: 52). Conclusions: Despite the fact that this sample of pregnant women maintains an omnivorous diet, a high prevalence of vitamin B12 deficiency was detected. Given the significance of vitamin B12 for maternal, fetal, and neonatal health, public health policies for preventing deficiency should be considered for both pregnant women and lactating mothers.

Objetivos: Avaliar a prevalência da deficiência de vitamina B12 em mulheres durante o pós-parto imediato. Métodos: Estudo observacional descritivo de recrutamento prospectivo da coorte em estudo; amostra com 133 mulheres no terceiro trimestre de gravidez na maternidade do Centro Hospitalar Pereira Rossell (CHPR), em Montevidéu Uruguai, entre setembro de 2021 e outubro de 2022. As amostras de sangue materno foram obtidas no pós-parto imediato por punção venosa periférica que foram processadas por imunoensaio eletroquimioluminescente. Além disso, foi realizada uma entrevista nutricional para avaliar hábitos nutricionais. Resultados: Todas as pacientes relataram ter dieta onívora, exceto uma que relatou ter dieta vegana e receber suplementação diária de vitamina B12. 75,9% da amostra apresentou baixo nível socioeconômico de acordo com o Questionário de Medição do Nível Socioeconômico do INSE (Índice de Nível Socioeconômico, 2018 - CEISMU, Uruguai). Uma prevalência de deficiência de vitamina B12 de 39,10% (n: 52) foi registrada. Conclusões: Embora esta amostra de gestantes tenha dieta onívora, uma alta prevalência de deficiência de vitamina B12 foi detectada. Dada a importância da vitamina B12 na saúde materna, fetal e neonatal, devem ser consideradas políticas de saúde pública para prevenir a deficiência tanto em mães grávidas como em lactantes.

The burden of stillbirths in low resource settings in Latin America: Evidence from a network using an electronic surveillance system.

OBJECTIVE: To determine stillbirth ratio and its association with maternal, perinatal, and delivery characteristics, as well as geographic differences in Latin American countries (LAC). METHODS: We analysed data from the Perinatal Information System of the Latin American Center for Perinatology and Human Development (CLAP) between January 2018 and June 2021 in 8 health facilities from five LAC countries (Bolivia, Guatemala, Honduras, Nicaragua, and the Dominican Republic). Maternal, pregnancy, and delivery characteristics, in addition to pregnancy outcomes were reported. Estimates of association were tested using chi-square tests, and P < 0.05 was regarded as significant. Bivariate analysis was conducted to estimate stillbirth risk. Prevalence ratios (PR) with their 95% confidence intervals (CI) for each predictor were reported. RESULTS: In total, 101,852 childbirths comprised the SIP database. For this analysis, we included 99,712 childbirths. There were 762 stillbirths during the study period; the Stillbirth ratio of 7.7/1,000 live births (ranged from 3.8 to 18.2/1,000 live births across the different maternities); 586 (76.9%) were antepartum stillbirths, 150 (19.7%) were intrapartum stillbirths and 26 (3.4%) with an ignored time of death. Stillbirth was significantly associated with women with diabetes (PRadj 2.36; 95%CI [1.25-4.46]), preeclampsia (PRadj 2.01; 95%CI [1.26-3.19]), maternal age (PRadj 1.04; 95%CI [1.02-1.05]), any medical condition (PRadj 1.48; 95%CI [1.24-1.76, and severe maternal outcome (PRadj 3.27; 95%CI [3.27-11.66]). CONCLUSIONS: Pregnancy complications and maternal morbidity were significantly associated with stillbirths. The stillbirth ratios varied across the maternity hospitals, which highlights the importance for individual surveillance. Specialized antenatal and intrapartum care remains a priority, particularly for women who are at a higher risk of stillbirth.

A research agenda to improve incidence and outcomes of assisted vaginal birth.

Access to emergency obstetric care, including assisted vaginal birth and caesarean birth, is crucial for improving maternal and childbirth outcomes. However, although the proportion of births by caesarean section has increased during the last few decades, the use of assisted vaginal birth has declined. This is particularly the case in low- and middle-income countries, despite an assisted vaginal birth often being less risky than caesarean birth. We therefore conducted a three-step process to identify a research agenda necessary to increase the use of, or reintroduce, assisted vaginal birth: after conducting an evidence synthesis, which informed a consultation with technical experts who proposed an initial research agenda, we sought and incorporated the views of women's representatives of this agenda. This process has allowed us to identify a comprehensive research agenda, with topics categorized as: (i) the need to understand women's perceptions of assisted vaginal birth, and provide appropriate and reliable information; (ii) the importance of training health-care providers in clinical skills but also in respectful care, effective communication, shared decision-making and informed consent; and (iii) the barriers to and facilitators of implementation and sustainability. From women's feedback, we learned of the urgent need to recognize labour, childbirth and postpartum experiences as inherently physiological and dignified human processes, in which interventions should only be implemented if necessary. The promotion and/or reintroduction of assisted vaginal birth in low-resource settings requires governments, policy-makers and hospital administrators to support skilled health-care providers who can, in turn, respectfully support women in labour and childbirth.

L'accès aux soins obstétriques d'urgence, y compris l'accouchement vaginal assisté et la césarienne, est essentiel pour améliorer les effets de la maternité et de l'accouchement. Toutefois, bien que la proportion de césariennes ait augmenté ces dernières décennies, le recours à l'accouchement vaginal assisté a diminué. C'est particulièrement le cas dans les pays à revenu faible ou intermédiaire, bien que l'accouchement vaginal assisté soit souvent moins risqué qu'une césarienne. Nous avons donc mené un processus en trois étapes afin d'imaginer un programme de recherche qui permettrait d'augmenter le recours à l'accouchement vaginal assisté ou de le réintroduire. Après avoir réalisé une synthèse des données probantes, qui a servi de base à une consultation avec des experts techniques qui ont proposé un programme de recherche initial, nous avons sollicité et incorporé les avis des représentantes des femmes pour ce programme. Ce processus nous a permis d'imaginer un programme de recherche complet, avec des sujets classés comme suit: (i) la nécessité de comprendre la perception qu'ont les femmes de l'accouchement vaginal assisté et de fournir des informations appropriées et fiables; (ii) l'importance de la formation des prestataires de soins de santé en matière de compétences cliniques, mais aussi de respect dans les soins de santé, de communication efficace, de prise de décision partagée et de consentement éclairé; ou (iii) les obstacles à la mise en œuvre et à la durabilité et les facteurs qui les facilitent. Les réactions de femmes nous ont appris qu'il était urgent de reconnaître que l'accouchement, la naissance et le post-partum sont des processus humains intrinsèquement physiologiques et dignes au cours desquels les interventions ne devraient être mises en œuvre qu'en cas de nécessité. La promotion et/ou la réintroduction de l'accouchement vaginal assisté dans les régions à faibles ressources nécessitent que les pouvoirs publics, les décideurs politiques et les administrations d'hôpitaux soutiennent les prestataires de soins de santé qualifiés, qui pourront à leur tour soutenir respectueusement les femmes pendant l'accouchement.

El acceso a la atención obstétrica de emergencia, incluido el parto vaginal asistido y el parto por cesárea, es crucial para mejorar los resultados de la maternidad y el parto. No obstante, aunque el porcentaje de partos por cesárea ha aumentado en las últimas décadas, el uso del parto vaginal asistido ha disminuido. Esto ocurre especialmente en los países de ingresos bajos y medios, a pesar de que un parto vaginal asistido suele ser menos arriesgado que un parto por cesárea. Por lo tanto, llevamos a cabo un proceso de tres pasos para identificar un programa de investigación necesario para aumentar el uso del parto vaginal asistido o volver a incorporarlo: tras realizar una síntesis de la evidencia, que sirvió de base para una consulta con expertos técnicos que propusieron un programa de investigación inicial, buscamos e integramos las opiniones de las representantes de las mujeres sobre este programa. Este proceso nos ha permitido identificar un programa de investigación exhaustivo, con temas categorizados como: (i) la necesidad de comprender las percepciones de las mujeres sobre el parto vaginal asistido, y proporcionar información adecuada y fiable; (ii) la importancia de formar a los profesionales sanitarios en habilidades clínicas, pero también en atención respetuosa, comunicación efectiva, toma de decisiones compartida y consentimiento informado; o (iii) las barreras y los facilitadores de la implementación y la sostenibilidad. A partir de las opiniones de las mujeres, nos enteramos de la urgente necesidad de reconocer las experiencias del parto, el alumbramiento y el posparto como procesos humanos inherentemente fisiológicos y dignos, en los que las intervenciones solo deben aplicarse si son necesarias. La promoción o la reincoporación del parto vaginal asistido en regiones de escasos recursos exige que los gobiernos, los responsables de formular políticas y los administradores de hospitales apoyen a los profesionales sanitarios capacitados que, a su vez, pueden ayudar a las mujeres en el trabajo de parto y el alumbramiento de manera respetuosa.

Neonatal outcomes according to different degrees of maternal morbidity: cross-sectional evidence from the Perinatal Information System (SIP) of the CLAP network.

BACKGROUND: The burden of maternal morbidity in neonatal outcomes can vary with the adequacy of healthcare provision and tool implementation to improve monitoring. Such information is lacking in Latin American countries, where the decrease in severe maternal morbidity and maternal death remains challenging. OBJECTIVES: To determine neonatal outcomes according to maternal characteristics, including different degrees of maternal morbidity in Latin American health facilities. METHODS: This is a secondary cross-sectional analysis of the Perinatal Information System (SIP) database from eight health facilities in five Latin American and Caribbean countries. Participants were all women delivering from August 2018 to June 2021, excluding cases of abortion, multiple pregnancies and missing information on perinatal outcomes. As primary and secondary outcome measures, neonatal near miss and neonatal death were measured according to maternal/pregnancy characteristics and degrees of maternal morbidity. Estimated adjusted prevalence ratios (PRadj) with their respective 95% CIs were reported. RESULTS: In total 85,863 live births were included, with 1,250 neonatal near miss (NNM) cases and 695 identified neonatal deaths. NNM and neonatal mortality ratios were 14.6 and 8.1 per 1,000 live births, respectively. Conditions independently associated with a NNM or neonatal death were the need for neonatal resuscitation (PRadj 16.73, 95% CI [13.29-21.05]), being single (PRadj 1.45, 95% CI [1.32-1.59]), maternal near miss or death (PRadj 1.64, 95% CI [1.14-2.37]), preeclampsia (PRadj 3.02, 95% CI [1.70-5.35]), eclampsia/HELPP (PRadj 1.50, 95% CI [1.16-1.94]), maternal age (years) (PRadj 1.01, 95% CI [<1.01-1.02]), major congenital anomalies (PRadj 3.21, 95% CI [1.43-7.23]), diabetes (PRadj 1.49, 95% CI [1.11-1.98]) and cardiac disease (PRadj 1.65, 95% CI [1.14-2.37]). CONCLUSION: Maternal morbidity leads to worse neonatal outcomes, especially in women suffering maternal near miss or death. Based on SIP/PAHO database all these indicators may be helpful for routine situation monitoring in Latin America with the purpose of policy changes and improvement of maternal and neonatal health.

Surveillance of severe maternal morbidity and maternal mortality in maternity hospitals of the Latin American and Caribbean network - Red CLAP: study protocol.

The sustained reduction in maternal mortality in America underlines the need to analyse women who survived a complication that could have been fatal if appropriate and timely care had not been taken. Analysis of maternal near-miss (MNM) cases, as well as potentially life-threatening conditions (PLTC), are considered indicators for monitoring the quality of maternal care. The specific objective of this study protocol is to develop a surveillance system for PLTC, MNM and maternal mortality, as primary outcomes, in Latin American and Caribbean maternal healthcare institutions. Secondarily, the study was designed to identify factors associated with these conditions and estimate how often key evidence-based interventions were used for managing severe maternal morbidity. This is a multicenter cross-sectional study with prospective data collection. The target population consists of all women admitted to health centres participating in the network during pregnancy, childbirth, or the postpartum period. Variables describing the sequence of events that may result in a PLTC, MNM or maternal death are recorded. Relevant quality control is carried out to ensure the quality of the database and confidentiality. Centres with approximately 2,500 annual deliveries will be included to achieve a sufficient number of cases for calculation of indicators. The frequency of outcome measures for PLTC, MNM and maternal mortality and their confidence intervals and differences between groups will be calculated using the most appropriate statistical tests. Similar procedures will be performed with variables describing the use of evidence-based practices. Networking creates additional possibilities for global information management and interaction between different research groups. Lessons can be learned and shared, generating scientific knowledge to address relevant health problems throughout the region with provision of efficient data management.

The impact of maternal morbidity on cesarean section rates: exploring a Latin American network of sentinel facilities using the Robson's Ten Group Classification System.

BACKGROUND: Latin America has the highest Cesarean Section Rates (CSR) in the world. Robson's Ten Group Classification System (RTGCS) was developed to enable understanding the CSR in different groups of women, classified according to obstetric characteristics into one of ten groups. The size of each CS group may provide helpful data on quality of care in a determined region or setting. Data can potentially be used to compare the impact of conditions such as maternal morbidity on CSR. The objective of this study is to understand the impact of Severe Maternal Morbidity (SMM) on CSR in ten different groups of RTGCS. METHODS: Secondary analysis of childbirth information from 2018 to 2021, including 8 health facilities from 5 Latin American and Caribbean countries (Bolivia, Guatemala, Honduras, Nicaragua, and the Dominican Republic), using a surveillance database (SIP-Perinatal Information System, in Spanish) implemented in different settings across Latin America. Women were classified into one of RTGCS. The frequency of each group and its respective CSR were described. Furthermore, the sample was divided into two groups, according to maternal outcomes: women without SMM and those who experienced SMM, considering Potentially Life-threatening Conditions, Maternal Near Miss and Maternal Death as the continuum of morbidity. RESULTS: Available data were obtained from 92,688 deliveries using the Robson Classification. Overall CSR was around 38%. Group 5 was responsible for almost one-third of cesarean sections. SMM occurred in 6.7% of cases. Among these cases, the overall CSR was almost 70% in this group. Group 10 had a major role (preterm deliveries). Group 5 (previous Cesarean section) had a very high CSR within the group, regardless of the occurrence of maternal morbidity (over 80%). CONCLUSION: Cesarean section rate was higher in women experiencing SMM than in those without SMM in Latin America. SMM was associated with higher Cesarean section rates, especially in groups 1 and 3. Nevertheless, group 5 was the major contributor to the overall CSR.

Predicting severe maternal outcomes in a network of sentinel sites in Latin-American countries.

OBJECTIVE: This study aimed to determine incidences of potentially life-threatening conditions (PLTC), maternal near misses (MNM), and maternal deaths (MD) in women who gave birth in participating facilities, and to determine the probability that a pregnancy involving a PLTC would evolve into an MNM and/or an MD. METHODS: This was a multicentric observational study implemented on a maternal network from August 2018 to May 2019 in five Latin-American countries. We summarized categorical variables as frequencies and continuous variables with median, interquartile range, and standard deviations. Positive and negative likelihood ratios were calculated and multivariate predictive models were built. RESULTS: There were 33 901 deliveries and miscarriages, of which 8.0% had at least one PLTC and 0.6% had an MNM. Hypertensive disorder was the most frequent condition to evolve into a severe maternal outcome. CONCLUSION: Identifying PLTC can help to prevent MNM and MD. The inclusion of these predictors in a real-time data registration system like the Perinatal Informatic System could work as a surveillance tool for early detection, leading to a reduction in the rate of worsening conditions.

The impact of maternal morbidity on cesarean section rates: exploring a Latin American network of sentinel facilities using the Robson's Ten Group Classification System

Background: Latin America has the highest Cesarean Section Rates (CSR) in the world. Robson's Ten Group Classification System (RTGCS) was developed to enable understanding the CSR in different groups of women, classified according to obstetric characteristics into one of ten groups. The size of each CS group may provide helpful data on quality of care in a determined region or setting. Data can potentially be used to compare the impact of conditions such as maternal morbidity on CSR. The objective of this study is to understand the impact of Severe Maternal Morbidity (SMM) on CSR in ten different groups of RTGCS. Methods: Secondary analysis of childbirth information from 2018 to 2021, including 8 health facilities from 5 Latin American and Caribbean countries (Bolivia, Guatemala, Honduras, Nicaragua, and the Dominican Republic), using a surveillance database (SIP-Perinatal Information System, in Spanish) implemented in different settings across Latin America. Women were classified into one of RTGCS. The frequency of each group and its respective CSR were described. Furthermore, the sample was divided into two groups, according to maternal outcomes: women without SMM and those who experienced SMM, considering Potentially Life-threatening Conditions, Maternal Near Miss and Maternal Death as the continuum of morbidity. Results: Available data were obtained from 92,688 deliveries using the Robson Classification. Overall CSR was around 38%. Group 5 was responsible for almost one-third of cesarean sections. SMM occurred in 6.7% of cases. Among these cases, the overall CSR was almost 70% in this group. Group 10 had a major role (preterm deliveries). Group 5 (previous Cesarean section) had a very high CSR within the group, regardless of the occurrence of maternal morbidity (over 80%). Conclusion: Cesarean section rate was higher in women experiencing SMM than in those without SMM in Latin America. SMM was associated with higher Cesarean section rates, especially in groups 1 and 3. Nevertheless, group 5 was the major contributor to the overall CSR. (AU)

Wave separation analysis-derived indexes obtained from radial and carotid tonometry in healthy pregnancy and pregnancy-associated hypertension: Comparison with pulse wave analysis-derived indexes.

Background: Increased wave reflections assessed by pulse wave analysis (PWA) was proposed as one of the potential culprits of hypertension seen in women with pregnancy-associated hypertension (PAH). However, this statement has never been confirmed with "Wave Separation Analysis" (WSA), a more sophisticated mathematical approach that analyzes the amplitude and interaction between forward and backward aortic pressure waveform components. Objective: To characterize potential changes in pressure wave components of PAH compared to healthy non-pregnant (NP) women and women with normal pregnancies (HP) by using WSA and compared these findings with PWA-derived indexes; secondarily, to evaluate differences in WSA-derived indexes between subgroups of PAH (i.e., preeclampsia [PE] and gestational hypertension [GH]). Methods: Using radial and carotid applanation tonometry, we quantified in HP (n = 10), PAH (n = 16), and NP (n = 401): (i) PWA-derived indexes; (ii) WSA-derived indexes: forward (Pf) and backward (Pb) waveform components, backward component arrival time (PbAT), reflection magnitude (RM = Pb/Pf) and index [RIx = Pb/(Pf + Pb)]. Results: While PAH was associated with a higher Pf compared to HP and NP, Pb and PbAT were similar between the groups. Both GH and PE showed a higher Pf compared to HP, but only PE had a trend of presenting with higher Pb and lower PbAT compared to the other groups. Finally, PAH showed a trend of having lower RM and RIx compared to NP and HP, with no differences between GH and PE. Conclusion: PAH was associated with higher Pf, but not higher Pb, compared to NP and HP, although PE also demonstrated a trend of higher Pb.

Cesarean section in Uruguay from 2008 to 2018: country analysis based on the Robson classification. An observational study.

BACKGROUND: The use of caesarean section has steadily increased, with Latin America being the region with the highest rates. Multiple factors account for that increase and the Robson classification is appropriate to compare determinants at the clinical level for caesarean section rates over time. The purpose of this study is to describe the evolution of caesarean section rates by Robson groups in Uruguay from 2008 to 2018 using a country level database. METHODS: We included the records of all women giving birth in Uruguay (pregnancies ≥22 weeks and weights ≥500 g) with valid data in the mode of childbirth recorded in the Perinatal Information System database between 2008 and 2018. Caesarean section rates were calculated by Robson groups for each of the years included, disaggregated by care sector (public/private) and by geographical area (Capital City/Non-Capital), with time trends and their significance analyzed using linear regression models. RESULTS: Of the total 485,263 births included in this research, the overall caesarean section rate was 43,1%. In 2018, among the groups at lower risk of caesarean section (1 to 4), the highest rates were seen in women in group 2B (98,8%), followed by those in group 4B (97,9%). A significant increase in the number of caesarean sections was seen in groups 2B (97,9 to 98,8%), 3 (8,36 to 11,1%) and 4 (A (22,7 to 26,9%) and B (95,4 to 97,9%) Significant growth was also observed in groups 5 (74,3 to 78,1%), 8 (90,6 to 95,5%), and 10 (39,1 to 46,7%). The private sector had higher rates of caesarean section for all groups throughout the period, except for women in group 9. The private sector in Montevideo presented the highest rates in the groups with the lowest risk of caesarean section (1, 2A, 3 and 4A), followed by the private sector outside of the capital. CONCLUSION: Uruguay is no exception to the increasing caesarean section trend, even in groups of women who have lower risk of requiring caesarean section. The implementation of interventions aimed at reducing caesarean section in the groups with lower obstetric risk in Uruguay is warranted.

Maternal mortality linked to COVID-19 in Latin America: Results from a multi-country collaborative database of 447 deaths.

Background: This study aimed to describe the clinical characteristics of maternal deaths associated with COVID-19 registered in a collaborative Latin-American multi-country database. Methods: This was an observational study implemented from March 1st 2020 to November 29th 2021 in eight Latin American countries. Information was based on the Perinatal Information System from the Latin American Center for Perinatology, Women and Reproductive Health. We summarized categorical variables as frequencies and percentages and continuous variables into median with interquartile ranges. Findings: We identified a total of 447 deaths. The median maternal age was 31 years. 86·4% of women were infected antepartum, with most of the cases (60·3%) detected in the third trimester of pregnancy. The most frequent symptoms at first consultation and admission were dyspnea (73·0%), fever (69·0%), and cough (59·0%). Organ dysfunction was reported in 90·4% of women during admission. A total of 64·8% women were admitted to critical care for a median length of eight days. In most cases, the death occurred during the puerperium, with a median of seven days between delivery and death. Preterm delivery was the most common perinatal complication (76·9%) and 59·9% were low birth weight. Interpretation: This study describes the characteristics of maternal deaths in a comprehensive multi-country database in Latin America during the COVID-19 pandemic. Barriers faced by Latin American pregnant women to access intensive care services when required were also revealed. Decision-makers should strengthen severity awareness, and referral strategies to avoid potential delays. Funding: Latin American Center for Perinatology, Women and Reproductive Health.

Antecedentes: Este estudio tuvo el objetivo de describir las características clínicas de las muertes maternas asociadas a COVID-19 registradas en una base de datos latinoamericana multipaís. Métodos: Se implementó un estudio observacional descriptivo en el que participaron ochos países Latinoamericanos desde el 1ero de marzo 2020 al 29 de noviembre 2021. La información se obtuvo del Sistema Informático Perinatal del Centro Latino Americano de Perinatología, Salud de la Mujer y Reproductiva. Presentamos las variables categóricas como frecuencias y porcentajes y las variables continuas en medianas con rangos inter cuartiles. Resultados: Identificamos un total de 447 muertes. La mediana de edad materna fue de 31 años. 86·4% de las mujeres se infectaron ante del parto, siendo la mayoría de los casos detectados en el tercer trimestre del embarazo (60·3%). Los síntomas más frecuentes en la primera consulta y la admisión fueron disnea (73·0%), fiebre (69·0%), y tos (59·0%). Se reportaron disfunciones orgánicas en 90·4% de las mujeres durante la admisión. Un total de 64·8% de las mujeres fueron ingresadas a cuidados críticos por una mediana de ocho días de estadía. En la mayoría de los casos la muerte ocurrió durante el puerperio, con una media de siete días entre el parto y su ocurrencia. El parto prematuro fue la complicación perinatal más frecuente (76·9%) y 59·9% tuvo bajo peso al nacer. Interpretación: Este estudio describe las características de las muertes maternas durante la pandemia por COVID-19 a partir de una base colaborativa multipaís. Se observaron barreras para el acceso a cuidados intensivos. Los tomadores de decisión deberían trabajar en el fortalecimiento de la conciencia de gravedad, y en estrategias de referencia para evitar potenciales demoras. Financiamiento: Centro Latino Americano de Perinatología, Salud de la Mujer y Reproductiva.

Shedding Light on the Pathophysiology of Preeclampsia-Syndrome in the Era of Cardio-Obstetrics: Role of Inflammation and Endothelial Dysfunction.

BACKGROUND: Preeclampsia (PE) is a pregnancy complication with serious maternal and neonatal consequences worldwide. Our understanding of PE pathophysiology has significantly evolved over the last decades by recognizing that endothelial dysfunction and systemic inflammation, with an associated angiogenic imbalance, are key pieces of this incomplete puzzle. In the present era, where no single treatment to cure or treat this obstetric condition has been developed so far, PE prevention and early prediction are the most useful clinical approach to reduce the PE burden. INTRODUCTION: Although most PE episodes occur in healthy nulliparous women, the identification of specific clinical conditions that increase the risk of PE dramatically provides a critical opportunity to improve outcomes by acting on potentially reversible factors, and also contributes to better understand this pathophysiologic enigma. METHODS: Pertinent studies were searched in PubMed/Medline and Google Scholar (updated August 2020) using common keywords applied in the field of preeclampsia, inflammation and endothelial dysfunction. Given the design of this work as a narrative review, no formal criteria for study selection or appraisal were utilized. CONCLUSION: In this review, we highlight major clinical contributors of PE and shed light on their potential link with endothelial dysfunction and inflammation.

Diagnostic performance of two different maternal near-miss approaches in a High Obstetric Risk Unit.

Maternal near-miss (MNM) is a maternal quality care indicator. The World Health Organization (WHO) defines it as a state in which a woman nearly dies but survives due to a complication during pregnancy, birth, or puerperium. The Latin American Federation of Obstetrics and Gynecology (FLASOG) and the Colombian National Health Institute (INS) established recommendations for the event's epidemiological surveillance; nonetheless, the operational definitions of the cases are different. This retrospective study examined the approaches of FLASOG and INS versus the WHO approach (gold standard) for the assessment of MNM in a high obstetric risk unit. Patients admitted with at least one criterion of the WHO, FLASOG, or INS approach for the definition of MNM from March 2016 to March 2017 were included. Sensitivity, specificity, positive and negative predictive value (PPV, NPV) were evaluated, as well as the Receiver Operating Characteristics (ROC) curve of the FLASOG and INS. MNM classification compared to WHO system as reference. The results highlight that the WHO classification establishes very high boundaries for some of the diagnostic criteria and the lack of standardization of the MNM criteria among the different proposals in Latin America hinders the applicability in Colombia and other countries with a similar situation.

Role of arterial impairment in preeclampsia: should the paradigm shift?

Preeclampsia is a worldwide pregnancy complication with serious short- and long-term maternal and neonatal consequences. Our understanding of preeclampsia pathophysiology has significantly evolved over the last decades with the recognition that impaired arterial function and structure may occur early in the course of pregnancy, preceding the clinic-humoral syndrome and driving long-term cardiovascular disease risk in the future of these patients. Although an early abnormal placentation may be the inciting event for a large proportion of cases, there is growing evidence that challenges the placental hypothesis in all affected women, since placental histopathology lesions thought to be characteristic are neither sensitive nor specific markers for the disorder. Recent hemodynamic investigations and studies on left ventricular function and structure in women with preeclampsia further challenge this universal paradigm and propose that placental dysfunction could be secondary to a maternal cardiovascular maladaptation to pregnancy in certain patients. Supporting this hypothesis, certain vascular features, which are characteristically enhanced in normal pregnancy allowing a healthy vascular adaptation, are absent in preeclampsia and comparable to the nonpregnant population. However, arterial biomechanics in preeclampsia may only not cope with hemodynamic demands of pregnancy but also impose additional detrimental loads to the maternal heart ("impaired left-ventricle-aorta coupling") and transmit pressure and flow disturbances into the fetoplacental circulation ("impaired large arteries-microcirculation coupling"). In this review, we analyze the major role of the arterial dysfunction in the cardiovascular maladaptation hypothesis of preeclampsia, shed light on its potential etiopathogenic link, and discuss the complementary nature of the placental and cardiovascular theories.

Center-To-Periphery Arterial Stiffness Gradient Is Attenuated and/or Reversed in Pregnancy-Associated Hypertension.

Background: Non-pregnant (NP) women have a progressive increase in arterial stiffness from central-to-peripheral arteries ["stiffness gradient" (SG)], which is of physiologic importance since excessive pulsatility is filtered by the creation of wave reflections. If the aorta gets stiff with minimal or no change in the periphery, the SG is dissipated transmitting pressure disturbances to the microcirculation. It remains unknown the status of the SG in both women with healthy pregnancies (HP) and complicated by pregnancy-associated hypertension (PAH). Objective: To determine whether HP and PAH are associated with changes in SG. Secondarily, we aim at identifying potential differences between the subgroups of PAH (pre-eclampsia and gestational hypertension). Methods: HP (n = 10), PAH (n = 16), and healthy NP women (n = 401, to be matched for age, and cardiovascular risk with the pregnant women) were included. Carotid-to-femoral (cfPWV) and carotid-to-radial pulse wave velocity (crPWV), common carotid artery (CCA) and brachial artery (BA) diameters and elastic modulus (EM), and regional (cfPWV/crPWV or "PWV ratio") and local (CCA EM/BA EM or "EM ratio") SG were quantified. Results: HP showed no changes in PWV ratio compared with NP, in the presence of significantly lower cfPWV and crPWV. HP exhibited higher arterial diameters and lower CCA EM/BA EM compared to NP, without differences with PAH. PAH was associated with a significant increase in the PWV ratio that exceeded the levels of both NP and HP, explained by a lower (although significant) reduction of cfPWV with respect to that observed in HP with respect to NP, and a higher reduction in crPWV with respect to that observed between HP and NP. The blunted reduction in cfPWV observed in PAH coincided with an increase in the CCA EM. Conclusions: Compared with NP, HP was associated with unchanged PWV ratio but with a reduction in CCA EM/BA EM, in the setting of a generalized drop in arterial stiffness. Compared with NP and HP, PAH was associated with an "exaggerated rise" in the PWV ratio without changes in CCA EM/BA EM, in the setting of a blunt reduction in cfPWV but exaggerated crPWV drop. The SG attenuation/reversal in PAH was mainly driven by pre-eclampsia.

Marijuana, tobacco, alcohol and cocaine use during pregnancy in 2013 and 2016. A self-report study in Montevideo, Uruguay. / Autodeclaración del consumo de marihuana, tabaco, alcohol y derivados de cocaína en embarazadas en 2013 y 2016, Montevideo, Uruguay.

BACKGROUND: Uruguay passed Law 19.172 on December 20, 2013, thus enabling the State to regulate the production, distribution, sale, and consumption of cannabis. OBJECTIVES: to determine the change in maternal self-report of marijuana, tobacco, alcohol, and cocaine use during pregnancy between 2013 and 2016. METHODS: cross-sectional, descriptive, analytical study between 2013 and 2016. The sample consists of pregnant woman who delivered and received immediate postpartum care at the Centro Hospitalario Pereira Rossell in Montevideo, Uruguay. The instrument was a protocolized survey that assessed outcomes such as sociodemographic level, years of formal education, data on pregnancy, childbirth, newborn, and substance use before and during pregnancy. RESULTS: the sample consisted of 577 pregnant women, 319 corresponding to interviews conducted in 2013 and 258 in 2016. Regarding alcohol intake, 76 (23.82%) women reported drinking while pregnant in 2013, whereas in 2016, 91 (35.3%) (p=.003) did so. As for tobacco, 59 (43%) quit smoking when they found out about their pregnancy in 2013, and 69 (60%) quit in 2016 (p=.008). In 2013, 41 women (12.85%) smoked marijuana until they discovered their pregnancy, and 79 (30%) did so in 2016 (p < .001). The use of cocaine and its derivatives did not change significantly between 2013 and 2016. CONCLUSIONS: between 2013 and 2016, there was a significant increase in the self-report of marijuana and alcohol consumption before and during pregnancy. The consumption of cocaine and cocaine base paste remained stable during this period. Tobacco use decreased significantly in pregnant women.

Introducción: Uruguay es el primer país en modificar la legislación sobre el consumo recreativo de cannabis, mediante la Ley 19.172 del 20 de diciembre de 2013, otorgando al Estado la potestad de regular su producción y comercialización. Objetivo: evaluar las prevalencias de la autodeclaración del consumo de marihuana, tabaco, alcohol, cocaína y derivados y su evolución temporal en embarazadas para los años 2013 y 2016. Metodología: estudio descriptivo, transversal y analítico, durante dos períodos de tiempo, en 2013 y 2016. Se incluyeron mujeres que tuvieron su parto y puerperio inmediato en el Centro Hospitalario Pereira Rossell (CHPR) de Montevideo, Uruguay. Se realizó una encuesta protocolizada sobre su nivel sociodemográfico, años de educación formal, datos del embarazo, parto, recién nacido y consumo de sustancias antes y durante la gestación. Resultados: en la investigación participaron 577 mujeres, 319 correspondientes a las entrevistas realizadas en el año 2013 y 258 en 2016. Respecto al alcohol, 76 (23,82%) mujeres declaran su consumo durante el embarazo en 2013, mientras que, en 2016, 91 (35,3%) (p=0,003). En cuanto al tabaco, 59 (43%) dejaron de fumar al enterarse del embarazo en 2013 y 69 (60%) en 2016 (p=0,008). En 2013, 41 mujeres (12,85%) fumaron marihuana hasta saber del embarazo y 79 (30%) en 2016 (p <0,001). Durante la gestación, en 2013 declararon fumar marihuana 5 mujeres (1,57%), mientras que en 2016 fueron 28 (10,85%) (p <0,001). El uso de cocaína y pasta base de cocaína (PBC) no cambió significativamente entre 2013 y 2016. Conclusiones: Entre los años 2013 y 2016 se observó un aumento significativo en la autodeclaración del consumo de marihuana y alcohol antes y durante el embarazo. El consumo de cocaína y pasta base de cocaína se mantuvo estable en ese periodo. El consumo de tabaco disminuyó significativamente en mujeres embarazadas.