Hypoxic Ischemic Encephalopathy in Units Reporting to the Ibero-American Society of Neonatology Network: Prevalence and Mortality.

INTRODUCTION: Hypoxic ischemic encephalopathy is a neurological condition occurring immediately after birth following a perinatal asphytic episode. Therapeutic hypothermia is a safe and effective intervention to reduce mortality and major disability in survivors. In Latin America, perinatal asphyxia is a major problem, but no data are available characterizing its current situation in the region or the impact of hypoxic ischemic encephalopathy on its management. OBJECTIVE: Understand the prevalence, mortality and use of therapeutic hypothermia in newborns at ≥36 weeks gestational age with hypoxic ischemic encephalopathy admitted to neonatal units reporting to the Ibero-American Society of Neonatology Network. METHODS: The Ibero-American Society of Neonatology Network groups various neonatology centers in Latin America that share information and collaborate on research and medical care. We evaluated data on newborns with ≥36 weeks gestational age reported during 2019. Each unit received a guide with definitions and questions based on the Society's 7th Clinical Consensus. Evaluated were encephalopathy frequency and severity, Apgar score, need for resuscitation at birth, use of therapeutic hypothermia and clinical evolution at discharge. Our analysis includes descriptive statistics and comparisons made using the chi-square test. RESULTS: We examined reports of 2876 newborns from 33 units and 6 countries. In 2849 newborns with available data, hypoxic encephalopathy prevalence was 5.1% (146 newborns): 27 (19%) mild, 36 (25%) moderate, 43 (29%) severe, and 40 (27%) of unknown intensity. In those with moderate and severe encephalopathy, frequencies of Apgar scores ≤3 at the first minute (p = 0.001), Apgar scores ≤3 at the fifth minute (p ⟨0.001) and advanced resuscitation (p = 0.007) were higher. Therapeutic hypothermia was performed in only 13% of newborns (19). Neonatal mortality from encephalopathy was 42% (61). CONCLUSIONS: Hypoxic ischemic encephalopathy is a neonatal condition that results in high mortality and severe neurological sequelae. In this study, the overall prevalence was 5.1% with a mortality rate of 42%. Although encephalopathy was moderate or severe in 54% of reported cases, treatment with hypothermia was not performed in 87% of newborns. These data reflect a regional situation that requires urgent action.

Neonatal mortality associated with perinatal asphyxia: a population-based study in a middle-income country.

BACKGROUND: It is challenging to decrease neonatal mortality in middle-income countries, where perinatal asphyxia is an important cause of death. This study aims to analyze the annual trend of neonatal mortality with perinatal asphyxia according to gestational age in São Paulo State, Brazil, during a 10-year period and to verify demographic, maternal and neonatal characteristics associated with these deaths. METHODS: Population-based study of neonatal deaths associated with perinatal asphyxia from 0 to 27 days in São Paulo State, Brazil, from 2004 to 2013. Perinatal asphyxia was considered as associated to death if intrauterine hypoxia, birth asphyxia or neonatal aspiration of meconium were noted in any line of the Death Certificate according to ICD-10. Poisson Regression was applied to analyze the annual trend of neonatal mortality rate according to gestational age. Kaplan-Meier curve was used to assess age at death during the 10-year study period. Hazard ratio of death during the neonatal period according to gestational age was analyzed by Cox regression adjusted by year of birth and selected epidemiological factors. RESULTS: Among 74,002 infant deaths in São Paulo State, 6648 (9%) neonatal deaths with perinatal asphyxia were studied. Neonatal mortality rate with perinatal asphyxia fell from 1.38‰ in 2004 to 0.95‰ in 2013 (p = 0.002). Reduction started in 2008 for neonates with 32-41 weeks, in 2009 for 28-31 weeks, and in 2011 for 22-27 weeks. Median time until 50% of deaths occurred was 25.3 h (95%CI: 24.0; 27.2). Variables independently associated with higher risk of death were < 7 prenatal visits, 1st minute Apgar score 0-3, and death at the same place of birth. Cesarean delivery compared to vaginal was protective against death with perinatal asphyxia for infants at 28-36 weeks. CONCLUSIONS: There was an expressive reduction in neonatal mortality rates associated with perinatal asphyxia during this 10-year period in São Paulo State, Brazil. Variables associated with these deaths highlight the need of public health policies to improve quality of regionalized perinatal care.

Death after Birth Asphyxia in the Cooling Era.

In asphyxiated newborn infants treated with hypothermia, 31 of 50 (62%) deaths occurred in unstable infants electively extubated before completing hypothermia treatment. Later deaths occurred after consultation with palliative care (13/19) or clinical ethics (6/19) services, suggesting these decisions were challenging and required support, particularly if nutrition and hydration were withdrawn (n = 4).

Asfixia al nacer: factores de riesgo materno y su repercusión en la mortalidad neonatal / Asphyxia at birth: maternal risk factors and their impact on neonatal mortality

Introducción: el término asfixia perinatal es muy controvertido y su empleo requiere extremo cuidado por sus implicaciones éticas y legales. Las tres principales causas de muerte de recién nacidos en el mundo son las infecciones, la prematuridad y la asfixia perinatal, según datos de la OMS. Objetivo: realizar una actualización sobre los factores de riesgo maternos que influyen en la asfixia perinatal. Desarrollo: se revisaron fuentes nacionales e internacionales actuales sobre las diferentes causas de muerte asociadas a la asfixia neonatal; producidas por malformaciones congénitas, sepsis neonatal y la asfixia secundaria a afecciones placentarias y factores de riesgo. Conclusiones: Se propone posible plan de acción tanto para nivel primario como secundario(AU)

Introduction: the term perinatal asphyxia is very controversial and its use requires extreme care due to its ethical and legal implications. The three main causes of death of newborns in the world are infections, prematurity and perinatal asphyxia, according to WHO data. Objective: to update the maternal risk factors that influence perinatal asphyxia. Development: current national and international sources on the different causes of death associated with neonatal asphyxia were reviewed; produced by congenital malformations, neonatal sepsis and asphyxia secondary to placental conditions and risk factors. Conclusions: A possible action plan is proposed for both primary and secondary levels(AU)

Introdução: o termo asfixia perinatal é muito controverso e seu uso requer extremo cuidado devido às suas implicações éticas e legais. As três principais causas de morte de recém-nascidos no mundo são infecções, prematuridade e asfixia perinatal, segundo dados da OMS. Objetivo: atualizar os fatores de risco maternos que influenciam a asfixia perinatal. Desenvolvimento: foram revisadas as atuais fontes nacionais e internacionais sobre as diferentes causas de morte associadas à asfixia neonatal; produzido por malformações congênitas, sepse neonatal e asfixia secundária a condições placentárias e fatores de risco. Conclusões: Um plano de ação possível é proposto para os níveis primário e secundário(AU)

Perinatal deaths preventable by intervention of the Unified Health System of Brazil. / Óbitos perinatais evitáveis por intervenções do Sistema Único de Saúde do Brasil.

OBJECTIVE: To describe the epidemiological characteristics of perinatal deaths through the actions of the Unified Health System. METHODS: This is a descriptive study of temporal analysis with a population of perinatal deaths of mothers residing in Recife, Brazil, from 2010 to 2014. A list was used to classify the preventable diseases and the variables were analysed using Epi lnfo™ version 7. RESULTS: The perinatal deaths totalled 1,756 (1,019 foetal and 737 neonatal premature) with a reduction of neonatal deaths (-15.8%) and an increase of foetal deaths (12.1%) in the study period. The main causes of death were foetus and newborn affected by the mother´s condition and asphyxia/hypoxia at birth. CONCLUSIONS: Most deaths were avoidable, especially in the group of appropriate care to mothers during pregnancy. Faults in the care provided to women at birth explain the percentage of deaths caused by asphyxia/hypoxia. The reduction of preventable perinatal mortality is associated with the increased access and quality of care, which ensures health promotion, disease prevention, treatment and specific and timely care.

A Novel Magnetic Resonance Imaging Score Predicts Neurodevelopmental Outcome After Perinatal Asphyxia and Therapeutic Hypothermia.

OBJECTIVE: To assess the predictive value of a novel magnetic resonance imaging (MRI) score, which includes diffusion-weighted imaging as well as assessment of the deep grey matter, white matter, and cerebellum, for neurodevelopmental outcome at 2 years and school age among term infants with hypoxic-ischemic encephalopathy treated with therapeutic hypothermia. STUDY DESIGN: This retrospective cohort study (cohort 1, The Netherlands 2008-2014; cohort 2, Sweden 2007-2012) including infants born at >36 weeks of gestational age treated with therapeutic hypothermia who had an MRI in the first weeks of life. The MRI score consisted of 3 subscores: deep grey matter, white matter/cortex, and cerebellum. Primary adverse outcome was defined as death, cerebral palsy, Bayley Scales of Infant and Toddler Development, third edition, motor or cognitive composite scores at 2 years of <85, or IQ at school age of <85. RESULTS: In cohort 1 (n = 97) and cohort 2 (n = 76) the grey matter subscore was an independent predictor of adverse outcome at 2 years (cohort 1, OR, 1.6; 95% CI, 1.3-1.9; cohort 2, OR, 1.4; 95% CI, 1.2-1.6), and school age (cohort 1, OR, 1.3; 95% CI, 1.2-1.5; cohort 2, OR, 1.3; 95% CI, 1.1-1.6). The white matter and cerebellum subscore did not add to the predictive value. The positive predictive value, negative predictive value, and area under the curve for the grey matter subscore were all >0.83 in both cohorts, whereas the specificity was >0.91 with variable sensitivity. CONCLUSION: A novel MRI score, which includes diffusion-weighted imaging and assesses all brain areas of importance in infants with therapeutic hypothermia after perinatal asphyxia, has predictive value for outcome at 2 years of age and at school age, for which the grey matter subscore can be used independently.

Óbitos perinatais evitáveis por intervenções do Sistema Único de Saúde do Brasil / Muertes perinatales evitables por intervención del Sistema de Salud Pública / Perinatal deaths preventable by intervention of the Unified Health System of Brazil

Resumo OBJETIVO Descrever características epidemiológicas dos óbitos perinatais por ações do Sistema Público de Saúde. MÉTODOS Estudo descritivo de análise temporal, população composta por óbitos perinatais de mães residentes no Recife, 2010-2014. Utilizado Lista de causas de mortes evitáveis para classificar a evitabilidade e EpiInfo versão 7 para análise das variáveis. RESULTADOS Ocorreram 1.756 óbitos perinatais (1.019 fetais e 737 neonatais precoce), observou-se redução dos óbitos neonatais precoces (-15,8%) e aumento dos fetais (12,1%). Apresentou como principais causas: feto e recém-nascido afetado por afecção materna e asfixia/hipóxia ao nascer. CONCLUSÕES A maior parte dos óbitos foi evitável, concentrando-se no grupamento de assistência adequada dispensada à mulher na gestação. Lacunas na assistência dispensada à mulher no parto, explicam o percentual de asfixia/hipóxia. Redução da mortalidade perinatal evitável associa-se à ampliação do acesso e qualidade da assistência para garantir promoção, prevenção, tratamento, cuidados específicos e oportunos.

Resumen OBJETIVO Describir las características epidemiológicas de las muertes perinatales por acciones del Sistema de Salud Pública. MÉTODOS Estudio descriptivo del análisis temporal, población compuesta por muertes perinatales de madres residentes en Recife, 2010-2014. Lista de causas de muertes evitables para clasificar la evitación y, EpiInfo versión 7 para el análisis de variables. RESULTADOS Hubo 1.756 muertes perinatales (1.019 fetales, 737 prematuros neonatos), reducción de muertes neonatales tempranas (-15,8%) y aumento fetal (12,1%). Principales causas: feto y recién-nacido afectados por afección materna y asfixia / hipoxia al nacer. CONCLUSIONES La mayoría de las muertes fueron evitables, concentrándose en la agrupación adecuada de la atención prestada a la mujer durante el embarazo. Las fallas en el cuidado dado a la mujer al nacer explican el porcentaje de asfixia/hipoxia. La reducción de la mortalidad perinatal prevenible se asocia con un mayor acceso y calidad de atención para asegurar la promoción, prevención, tratamiento y atención específica y oportuna.

Abstract OBJECTIVE To describe the epidemiological characteristics of perinatal deaths through the actions of the Unified Health System. METHODS This is a descriptive study of temporal analysis with a population of perinatal deaths of mothers residing in Recife, Brazil, from 2010 to 2014. A list was used to classify the preventable diseases and the variables were analysed using Epi lnfo™ version 7 RESULTS The perinatal deaths totalled 1,756 (1,019 foetal and 737 neonatal premature) with a reduction of neonatal deaths (-15.8%) and an increase of foetal deaths (12.1%) in the study period. The main causes of death were foetus and newborn affected by the mother´s condition and asphyxia/hypoxia at birth. CONCLUSIONS Most deaths were avoidable, especially in the group of appropriate care to mothers during pregnancy. Faults in the care provided to women at birth explain the percentage of deaths caused by asphyxia/hypoxia. The reduction of preventable perinatal mortality is associated with the increased access and quality of care, which ensures health promotion, disease prevention, treatment and specific and timely care.

Early neonatal deaths associated with perinatal asphyxia in infants ≥2500g in Brazil / Óbitos neonatais precoces associados à asfixia perinatal em neonatos ≥2500g no Brasil

Abstract Objective: To assess the annual burden of early neonatal deaths associated with perinatal asphyxia in infants weighing ≥2500 g in Brazil from 2005 to 2010. Methods: The population study enrolled all live births of infants with birth weight ≥2500 g and without malformations who died up to six days after birth with perinatal asphyxia, defined as intrauterine hypoxia, asphyxia at birth, or meconium aspiration syndrome. The cause of death was written in any field of the death certificate, according to International Classification of Diseases,10th Revision (P20.0, P21.0, and P24.0). An active search was performed in 27 Brazilian federative units. The chi-squared test for trend was applied to analyze early neonatal mortality ratios associated with perinatal asphyxia by study year. Results: A total of 10,675 infants weighing ≥2500 g without malformations died within six days after birth with perinatal asphyxia. Deaths occurred in the first 24 h after birth in 71% of the infants. Meconium aspiration syndrome was reported in 4076 (38%) of these deaths. The asphyxia-specific early neonatal mortality ratio decreased from 0.81 in 2005 to 0.65 per 1000 live births in 2010 in Brazil (p < 0.001); the meconium aspiration syndrome-specific early neonatal mortality ratio remained between 0.20 and 0.29 per 1000 live births during the study period. Conclusions: Despite the decreasing rates in Brazil from 2005 to 2010, early neonatal mortality rates associated with perinatal asphyxia in infants in the better spectrum of birth weight and without congenital malformations are still high, and meconium aspiration syndrome plays a major role.

Resumo Objetivo: Avaliar a taxa anual de óbitos neonatais precoces associados à asfixia perinatal em neonatos de peso ≥ 2.500 g no Brasil de 2005 a 2010. Métodos: A população do estudo envolveu todos os nascidos vivos de neonatos com peso ao nascer ≥ 2.500 g e sem malformações que morreram até seis dias após o nascimento por asfixia perinatal, definida como hipóxia intrauterina, asfixia no nascimento ou síndrome de aspiração de mecônio. A causa do óbito foi escrita em qualquer linha do atestado de óbito, de acordo com a Classificação Internacional de Doenças, 10a Revisão (P20.0, P21.0 e P24.0). Foi feita uma pesquisa ativa em 27 unidades federativas brasileiras. O teste qui-quadrado de tendência foi aplicado para analisar os índices de mortalidade neonatal associados a asfixia perinatal até o ano do estudo. Resultados: Morreram 10.675 neonatos com peso ≥ 2.500 g sem malformações até 0-6 dias após o nascimento por asfixia perinatal. Os óbitos ocorreram nas primeiras 24 horas após o nascimento em 71% dos neonatos. A síndrome de aspiração de mecônio foi relatada em 4.076 (38%) dos óbitos. O índice de mortalidade neonatal precoce relacionada à asfixia caiu de 0,81 em 2005 para 0,65 por 1.000 nascidos vivos em 2010 no Brasil (p < 0,001); o índice de mortalidade neonatal precoce relacionada a síndrome de aspiração de mecônio permaneceu entre 0,20-0,29 por 1.000 nascidos vivos durante o período do estudo. Conclusões: Apesar da redução nas taxas no Brasil de 2005 a 2010, as taxas de mortalidade neonatal precoce associadas à asfixia perinatal em neonatos no melhor espectro de peso ao nascer e sem malformações congênitas ainda são altas e a síndrome de aspiração de mecônio desempenha um importante papel.

Early neonatal deaths associated with perinatal asphyxia in infants ≥2500g in Brazil.

OBJECTIVE: To assess the annual burden of early neonatal deaths associated with perinatal asphyxia in infants weighing ≥2500g in Brazil from 2005 to 2010. METHODS: The population study enrolled all live births of infants with birth weight ≥2500g and without malformations who died up to six days after birth with perinatal asphyxia, defined as intrauterine hypoxia, asphyxia at birth, or meconium aspiration syndrome. The cause of death was written in any field of the death certificate, according to International Classification of Diseases, 10th Revision (P20.0, P21.0, and P24.0). An active search was performed in 27 Brazilian federative units. The chi-squared test for trend was applied to analyze early neonatal mortality ratios associated with perinatal asphyxia by study year. RESULTS: A total of 10,675 infants weighing ≥2500g without malformations died within six days after birth with perinatal asphyxia. Deaths occurred in the first 24h after birth in 71% of the infants. Meconium aspiration syndrome was reported in 4076 (38%) of these deaths. The asphyxia-specific early neonatal mortality ratio decreased from 0.81 in 2005 to 0.65 per 1000 live births in 2010 in Brazil (p<0.001); the meconium aspiration syndrome-specific early neonatal mortality ratio remained between 0.20 and 0.29 per 1000 live births during the study period. CONCLUSIONS: Despite the decreasing rates in Brazil from 2005 to 2010, early neonatal mortality rates associated with perinatal asphyxia in infants in the better spectrum of birth weight and without congenital malformations are still high, and meconium aspiration syndrome plays a major role.

Early neonatal deaths with perinatal asphyxia in very low birth weight Brazilian infants.

OBJECTIVE: The objective of this study was to assess the frequency of early deaths associated with birth asphyxia of very low birth weight infants between 2005 and 2010, in Brazil. STUDY DESIGN: This population study enrolled all live births with birth weight from 400 to 1499 g, gestational age ⩾ 22 weeks, without malformations that died up to 6 days after birth with perinatal asphyxia. Asphyxia was defined if intrauterine hypoxia, asphyxia at birth or meconium aspiration syndrome were written in any line of the death certificate. Active search was carried out in 27 Brazilian federative units. RESULT: For every 1000 live births of very low birth weight infants without congenital malformations, 40.25 and 32.38 died with birth asphyxia in the first week after birth, respectively, in 2005 and 2010 (P<0.001). The contribution of birth asphyxia to early neonatal death of these infants was approximately 10 to 12% all study years. CONCLUSION: Reduction of birth asphyxia in very low birth weight infants is essential to reducing neonatal mortality in Brazil.

Perinatal asphyxia associated with early neonatal mortality: populational study of avoidable deaths.

OBJECTIVE: To compare the epidemiological profile of avoidable early neonatal deaths associated with perinatal asphyxia according to region of death in the State of São Paulo, Brazil. METHODS: Population-based cohort study including 2,873 avoidable deaths up to six days of life associated with perinatal asphyxia from January 2001 to December 2003. Perinatal asphyxia was considered if intrauterine hypoxia, birth asphyxia, or meconium aspiration syndrome were written in any line of the original Death Certificate. Epidemiological data were also extracted from the Birth Certificate. RESULTS: During the three years, 1.71 deaths per 1,000 live births were associated with perinatal asphyxia, which corresponded to 22% of the early neonatal deaths. From the 2,873 avoidable deaths, 761 (27%) occurred in São Paulo city; 640 (22%), in the metropolitan region of São Paulo city; and 1,472 (51%), in the countryside of the state. In the first two regions, deaths were more frequent in public hospitals, among newborns with gestational age of 36 weeks or less, and among babies weighing less than 2500g. In the countryside, mortality was more frequent in philanthropic hospitals, in term newborns and in neonates weighing over 2500g. Most of these neonates were born during daytime in their hometown and died at the same institution in which they were born within the first 24 hours after delivery. Meconium aspiration syndrome was related to 18% of the deaths. CONCLUSIONS: Perinatal asphyxia is a frequent contributor to the avoidable early neonatal death in the state with the highest gross domestic product per capita in Brazil, and it shows the need for specific interventions with regionalized focus during labor and birth care.

Asfixia perinatal associada à mortalidade neonatal precoce: estudo populacional dos óbitos evitáveis / Perinatal asphyxia associated with early neonatal mortality: populational study of avoidable deaths / Asfixia perinatal asociada a la mortalidad neonatal temprana: estudio de población de los óbitos evitables

OBJETIVO: Comparar o perfil epidemiológico dos óbitos neonatais precoces evitáveis associados à asfixia perinatal conforme a região de ocorrência do óbito no Estado de São Paulo. MÉTODOS: Coorte populacional constituída por 2.873 óbitos evitáveis até seis dias de vida associados à asfixia perinatal ocorridos entre janeiro de 2001 e dezembro de 2003. Considerou-se como asfixia perinatal a presença de hipóxia intraútero, asfixia ao nascer ou síndrome de aspiração de mecônio em qualquer linha da Declaração de Óbito original. Variáveis epidemiológicas também foram extraídas das Declarações de Nascido Vivo. RESULTADOS: No triênio, 1,71 mortes por 1.000 nascidos vivos estavam associadas à asfixia perinatal, correspondendo a 22% dos óbitos neonatais precoces. Dos 2.873 óbitos evitáveis, 761 (27%) ocorreram em São Paulo, capital; 640 (22%), na região metropolitana da capital; e 1.472 (51%), no interior do estado. Nas duas primeiras regiões predominaram as mortes em hospitais públicos, recém-nascidos com idade gestacional inferior a 37 semanas e peso abaixo de 2500g. No interior, os óbitos foram mais frequentes em entidades beneficentes, recém-nascidos a termo e com peso superior a 2500g. A maioria dos bebês nasceu durante o dia no município de residência materna e evoluiu para óbito no hospital de nascimento até 24 horas após o parto. A síndrome de aspiração de mecônio esteve presente em 18% dos óbitos. CONCLUSÕES: A asfixia perinatal é um contribuinte frequente para a morte neonatal precoce evitável no estado com o maior produto interno bruto per capita do Brasil, evidenciando a necessidade de intervenções específicas com enfoque regionalizado na assistência ao parto e ao nascimento.

OBJECTIVE: To compare the epidemiological profile of avoidable early neonatal deaths associated with perinatal asphyxia according to region of death in the State of São Paulo, Brazil. METHODS: Population-based cohort study including 2,873 avoidable deaths up to six days of life associated with perinatal asphyxia from January 2001 to December 2003. Perinatal asphyxia was considered if intrauterine hypoxia, birth asphyxia, or meconium aspiration syndrome were written in any line of the original Death Certificate. Epidemiological data were also extracted from the Birth Certificate. RESULTS: During the three years, 1.71 deaths per 1,000 live births were associated with perinatal asphyxia, which corresponded to 22% of the early neonatal deaths. From the 2,873 avoidable deaths, 761 (27%) occurred in São Paulo city; 640 (22%), in the metropolitan region of São Paulo city; and 1,472 (51%), in the countryside of the state. In the first two regions, deaths were more frequent in public hospitals, among newborns with gestational age of 36 weeks or less, and among babies weighing less than 2500g. In the countryside, mortality was more frequent in philanthropic hospitals, in term newborns and in neonates weighing over 2500g. Most of these neonates were born during daytime in their hometown and died at the same institution in which they were born within the first 24 hours after delivery. Meconium aspiration syndrome was related to 18% of the deaths. CONCLUSIONS: Perinatal asphyxia is a frequent contributor to the avoidable early neonatal death in the state with the highest gross domestic product per capita in Brazil, and it shows the need for specific interventions with regionalized focus during labor and birth care.

OBJETIVO: Comparar el perfil epidemiológico de los óbitos neonatales tempranos evitables asociados a la asfixia perinatal conforme a la región de ocurrencia del óbito en la provincia de São Paulo (Brasil). MÉTODOS: Cohorte de población constituida por 2.873 óbitos evitables hasta seis días de vida asociados a la asfixia perinatal ocurridos entre enero de 2001 y diciembre de 2003. Se consideró como asfixia perinatal la presencia de hipoxia intraútero, asfixia al nacer o síndrome de aspiración de meconio en cualquier línea de la Declaración de Óbito original. Variables epidemiológicas también fueron extraídas de las Declaraciones de Nacido Vivo. RESULTADOS: En el trienio, 1,71 muertes por 1.000 nacidos vivos estaban asociadas a la asfixia perinatal, correspondiendo al 22% de los óbitos neonatales tempranos. De los 2.873 óbitos evitables, 761 (27%) tuvieron lugar en São Paulo, capital; 640 (22%), en la región metropolitana de la capital; y 1.472 (51%) en el interior de la provincia. En las dos primeras regiones predominaron las muertes en hospitales públicos, recién nacidos con edad gestacional inferior a 37 semanas y peso inferior a 2.500g. En el interior, los óbitos fueron más frecuentes en entidades benéficas, recién nacidos a término y con peso superior a 2.500g. La mayoría de los bebés nació durante el día en el municipio de residencia materna y evolucionó a óbito en el hospital de nacimiento hasta 24 horas después del parto. El síndrome de aspiración de meconio estuvo presente en el 18% de los óbitos. CONCLUSIONES: La asfixia perinatal es un contribuyente frecuente a la muerte neonatal temprana evitable en la provincia con el más grande producto interno bruto per capita de Brasil, lo que evidencia la necesidad de intervenciones específicas con enfoque regionalizado en la asistencia al parto y al nacimiento.

Apgar score and neonatal mortality in a hospital located in the southern area of São Paulo City, Brazil.

OBJECTIVE: To correlate the Apgar score, and neonatal mortality and its causes at a hospital located in the southern area of São Paulo City. METHODS: A retrospective study performed by analysis of medical charts (n = 7,094) of all live newborns during the period of 2005 to 2009, with data up to 28 days of life in reference to weight, Apgar score, survival and cause of mortality. Cases were analyzed by the chi2 test (p < 0.05). RESULTS: In 7,094 births, there were 139 deaths, 58.3% during the first week, and 3.6% of them with Apgar < 4 in the 1st minute. A positive association was found between mortality and this variable, with significantly declining values up to 2,000 g in weight. In the group with weight < 1,000 g, the association with Apgar < 4 in the 1st minute with mortality was three-fold greater than in the 1,000-1,500 g weight group, and 35-fold greater than in the > or = 3,000 g group. Among newborns with Apgar 8-10, the rate of mortality and low weight was two times greater than in those with weight > 2,499 g. Fetal distress and prematurity were associated with early neonatal death; malformations and fetal distress to late mortality. The predictive value of death with Apgar < 4 varied, according to weight, from 62.74% in the < 1,000 g group to 5.5%, in the > 3,000 g group. CONCLUSIONS: The Apgar score proved linked to factors both epidemiological and related to attention given to the birth and neonatal mortality, and was associated with extremely low birth weight.

Apgar score and neonatal mortality in a hospital located in the southern area of São Paulo City, Brazil / Escore de Apgar e mortalidade neonatal em um hospital localizado na zona sul do município de São Paulo

Objective: To correlate the Apgar score, and neonatal mortality and its causes at a hospital located in the southern area of São Paulo City. Methods: A retrospective study performed by analysis of medical charts (n=7,094) of all live newborns during the period of 2005 to 2009, with data up to 28 days of life in reference to weight, Apgar score, survival and cause of mortality. Cases were analyzed by the X² test (p < 0.05). Results: In 7,094 births, there were 139 deaths, 58.3% during the first week, and 3.6% of them with Apgar < 4 in the 1st minute. A positive association was found between mortality and this variable, with significantly declining values up to 2,000 g in weight. In the group with weight < 1,000 g, the association with Apgar < 4 in the 1st minute with mortality was three-fold greater than in the 1,000-1,500 g weight group, and 35-fold greater than in the ? 3,000 g group. Among newborns with Apgar 8-10, the rate of mortality and low weight was two times greater than in those with weight > 2,499 g. Fetal distress and prematurity were associated with early neonatal death; malformations and fetal distress to late mortality. The predictive value of death with Apgar < 4 varied, according to weight, from 62.74% in the < 1,000 g group to 5.5%, in the > 3,000 g group. Conclusions: The Apgar score proved linked to factors both epidemiological and related to attention given to the birth and neonatal mortality, and was associated with extremely low birth weight.

Objetivo: Correlacionar o escore de Apgar e a mortalidade neonatal e suas causas em um hospital localizado na zona Sul do município de São Paulo. Métodos: Estudo retrospectivo por análise de prontuário (n=7.094), de todos os recém-nascidos vivos, no período de 2005 a 2009, com dados referentes até os 28 dias de vida, quanto a peso, escore de Apgar, sobrevida e causa de mortalidade. Os casos foram analisados pelo teste do X² (p < 0,05). Resultados: Nos 7.094 nascimentos, houve 139 óbitos, 58,3% na primeira semana, 3,6% com Apgar < 4 no 1º minuto. Foi encontrada associação positiva entre mortalidade e essa variável, com valores decrescentes significantemente até o peso de 2.000 g. No grupo de peso < 1.000 g, a associação do Apgar < 4 no 1º minuto com mortalidade foi três vezes maior do que no grupo 1.000 a 1.500 g e 35 vezes maior do que no grupo ? 3.000 g. Entre os recém-nascidos com Apgar de 8 a 10, a mortalidade entre baixo peso foi duas vezes maior do que nos de peso > 2.499 g. O sofrimento fetal e a prematuridade se associaram a óbito neonatal precoce; malformações e o sofrimento fetal à mortalidade tardia. O valor preditivo de morrer quando o Apgar < 4 variou, conforme o peso, entre 62,74% no grupo < 1.000 g a 5,5% no grupo > 3.000 g. Conclusões: O escore de Apgar se mostrou ligado a fatores epidemiológicos e de atenção ao parto, à mortalidade neonatal e se associou a extremo baixo peso.

Mortalidad neonatal: enfrentando el futuro / Neonatal mortality: confronting the future

El objetivo fue estudiar la mortalidad neonatal de los años 2005 a 2008, conocer su ocurrencia, determinar características maternas, condiciones obstétricas y factores relacionados. Es un estudio observacional analítico de 164 neonatos. Para el lapso hubo 10180 recién nacidos vivos en el Departamento de Obstetricia y Ginecología. Departamento Clínico Integral de la Costa. Universidad de Carabobo. Hospital Dr. Adolfo Prince Lara, Puerto Cabello, Estado Carabobo. La mortalidad neonatal fue 16.11 por mil recién nacidos vivos o una muerte cada 62 nacidos vivos. Hubo predominio de madres de 24 años y menos (55,56%), en antecedentes familiares destacó la hipertensión arterial (30,86%) y diabetes (4,3%), en antecedentes personales la prematurez (16,1%). El diagnóstico de ingreso fue amenaza de parto prematuro 21,61%, trabajo de parto pre-término 19,14% y rotura prematura de membrana 19,75%. No realizaron control prenatal 64,2%; eran multigestas 63,6%, con edad de embarazo menor igual 36 a semanas 72,22% y resultado en parto normal 71,61%. Predominaron los fetos masculinos (53,66%), con peso menor igual 2.500 g (78,66%) y talla menor igual 49 cm (88,4%), el índice Apgar de 7 y menos (84,75%). El factor de muerte directo conocido prevaleciente en 164 casos fue la insuficiencia repiratoria (53,66%), seguida de sepsis (21,95%) y asfixia perinatal (19,51%).

El objetive was to study the neonatal mortality of the years 2005-2008, knowing its impact, determine the material characteristics, obstetric conditions and related factors. It is a observational and analytical study of 164 neonatal death. For the period there were 10.180 live births in the Department of Obstetrics and Gynecology, Hospital "Dr. Adolfo Prince Lara", Puerto Cabello, Estado Carabobo. The neonatal mortality was 16,11 per thousand live births, or one death every 62 births. There were more mothers 24 years or less (55.56%), in personal prematurity (16.1%). The initial diagnosis was premature labor 21.61%, labor preterm 19.14% and pre-term premature rupture of membranes 19.75%. No prenatal care 64.2%, were multiparous 63.6%, with gestational age minor igual 36 weeks 72.22%, and ended in normal delivery 71.61%. A predominance of male fetuses (53,66%) with weight minor igual 2500 g (78.66%) and height minor igual 49 cm (88.4%), Apgar Index of 7 or less (84.75%). Factor prevalent direct death in 164 cases was respiratory failure (53.66%), followed by sepsis (21.95%) and perinatal asphyxia (19.51%).

Differences in mortality between late-preterm and term singleton infants in the United States, 1995-2002.

OBJECTIVE: To assess differences in mortality between late-preterm (34-36 weeks) and term (37-41 weeks) infants. STUDY DESIGN: We used US period-linked birth/infant death files for 1995 to 2002 to compare overall and cause-specific early-neonatal, late-neonatal, postneonatal, and infant mortality rates between singleton late-preterm infants and term infants. RESULTS: Significant declines in mortality rates were observed for late-preterm and term infants at all age-at-death categories, except the late-neonatal period. Despite the decline in rates since 1995, infant mortality rates in 2002 were 3 times higher in late-preterm infants than term infants (7.9 versus 2.4 deaths per 1000 live births); early, late, and postneonatal rates were 6, 3, and 2 times higher, respectively. During infancy, late-preterm infants were approximately 4 times more likely than term infants to die of congenital malformations (leading cause), newborn bacterial sepsis, and complications of placenta, cord, and membranes. Early-neonatal cause-specific mortality rates were most disparate, especially deaths caused by atelectasis, maternal complications of pregnancy, and congenital malformations. CONCLUSIONS: Late-preterm infants have higher mortality rates than term infants throughout infancy. Our findings may be used to guide obstetrical and pediatric decision-making.

Asfixia neonatal / Neonatal asphyxia

La asfixia neonatal sigue siendo un problema importante de mortalidad y morbilidad a largo plazo en las unidades de neonatología, a pesar de las mejorasen estudio y monitoreo perinatal. Su principal expresión clínica usada como sinónimo es la encefalopatía hipóxico isquemica. La presente revisión tiene el fin de recordar la etiopatogenia, fisiopatología, expresión clínica y actualizar el manejo y tratamiento establecido como experimental.

Brain white matter lesions correlated to newborns death and lethality

OBJECTIVES: to describe hospital lethality rates and factors correlated to death in neonates with brain white matter lesions. METHODS: a retrospective study was performed from January 1994 to December 2001. Neonates with white brain matter lesions were divided into survival and death groups and their medical files reviewed through the single blind method to determine evolution. Death certificates provided the cause of death. The groups were compared through correlation coefficients. Hospital lethality rate was calculated. RESULTS: ninety three cases of white brain matter lesions and seven deaths were determined. Hospital lethality rate was of 8.2. percent (95 percentCI: 2.4-14.0) independently from lesion occurrence time, and of 10.3 percent (95 percentCI: 3.3-17.3) for deaths occurred during prenatal and perinatal periods. Death was correlated to: Apgar score, non-cephalic presentation, gestational age, hyperglicemia, hypercalcemia, convulsion, respiratory insufficiency and atelectasy. CONCLUSIONS: hospital lethality was of 10.3 percent generating the following hypothesis: perinatal asphyxia must be the principal direct and indirect etiologic factor (aggravating the expression of prematurity and infection diseases), of prenatal and perinatal mortality among newborns with white brain matter lesions; and <7 Apgar score in the 5th minute associated to brain white matter lesions, are markers for perinatal asphyxia diagnosis.

OBJETIVOS: descrever a taxa de letalidade hospitalar e fatores correlacionados com o óbito em crianças com lesão da substância branca cerebral (LSB). MÉTODOS: estudo retrospectivo realizado de janeiro de 1994 a dezembro de 2001. Os neonatos com LSB foram divididos em sobreviventes ou óbito, e seus prontuários revisados de forma cega para a evolução. Dos atestados de óbito, a causa de morte. Os grupos foram comparados por coeficientes de correlação. Calculada a taxa de letalidade hospitalar. RESULTADOS: foram encontrados 93 casos de LSB e sete óbitos. A taxa de letalidade hospitalar foi de 8,2 por cento, (IC95 por cento: 2,4-14,0), independentemente da época de instalação da lesão, e de 10,3 por cento (IC95 por cento: 3,3-17,3) para aqueles de ocorrência pré/perinatal. O óbito correlacionou-se com: escore de Apgar, apresentação não-cefálica, idade gestacional, hiperglicemia, hipercalcemia, convulsão, insuficiência respiratória e atelectasia. CONCLUSÕES: a letalidade hospitalar foi de 10,3 por cento e as seguintes hipóteses foram geradas: a asfixia perinatal deve ser o principal fator etiológico, direto e indireto (agravando a expressão das doenças da prematuridade e da infecção), da mortalidade pré/perinatal entre neonatos com LSB; e o escore de Apgar do 5o minuto <7, associado à LSB, são marcadores para o diagnóstico de asfixia perinatal.

Comportamiento de la mortalidad perinatal en el hospital "América Arias" en el período de 1993 a 2002 / Behavior of perinatal mortality at "América Arias" Hospital in a period of 10 years

Se realizó un estudio observacional descriptivo de corte transversal para determinar el comportamiento y las principales causas de la mortalidad perinatal I y de sus componentes en el hospital "América Arias", en el período 1993 a 2002. Se revisaron exhaustivamente las historias clínicas de las gestantes que tuvieron defunciones y se precisó el número de nacidos vivos. Se calcularon las tasas de mortalidad perinatal I y de sus componentes y se realizó análisis de series temporales y de distribución de frecuencias de las variables de interés. En el período, se observó un incremento de la mortalidad perinatal I (tasa 20,4 en 1998) hasta su mitad, seguido de un descenso gradual de la mortalidad (11,5 en 2002). El grupo menor de 2 500 gramos de peso (64,2 por ciento) y los pretérmino (52,2 por ciento), aportaron el mayor porcentaje de fallecidos a la mortalidad perinatal I a expensas de la mortalidad fetal tardía. Las causas de muerte más relevantes en este período fueron la muerte fetal inexplicada ( 21,6 por ciento), la asfixia (32,9 por ciento) y las malformaciones congénitas (18,6 por ciento), que aportaron el mayor porcentaje a la mortalidad perinatal I. En cuanto a sus componentes, la muerte fetal idiopática (28,9 por ciento) y la asfixia (44,1 por ciento) fueron causas notables en la mortalidad fetal tardía, y en las muertes neonatales precoces fueron las infecciones (32,1 por ciento) y las malformaciones congénitas (30,7 por ciento). Los resultados de este estudio sugieren, que a pesar de que existe un descenso progresivo de la mortalidad perinatal I, y conocidos los factores de riesgo que tienden a aumentarla, se impone mejorar la atención y control de las pacientes en la etapa preconcepcional y prenatal para disminuir los índices de bajo peso al nacer, pretérminos y malformaciones congénitas. Así mismo, es necesario incrementar los cuidados ante e intraparto en la lucha contra la infección y la hipoxia(AU)

Comportamiento de la mortalidad perinatal en el hospital "América Arias" en un período de 3 años / Behavior of perinatal mortality at "America Arias" hospital during 3 years

Se realizo un estudio retrospectivo descriptivo de 145 defunciones perinatales ocurridos en un periodo de 3 años, desde enero del 2000 hasta diciembre del 2002, en el hospital docente ginecoobstétrico "América Arias". La mortalidad perinatal estudiada abarcó las muertes fetales tardías, y las ocurridas en nacidos vivos antes de los 7 días, denominadas muertes precoces. El trabajo tiene como objetivo describir el comportamiento de la mortalidad perinatal I en el centro antes mencionado. A los efectos de llevar a cabo esta investigación, se analizaron las historias clínicas y el carnét obstétrico de las madres, las historias clínicas de los productos fallecidos y el libro de registro de defunciones y necropsias del hospital. Se obtuvo como resultados una mayor mortalidad en gestantes a término y bajo peso y en pacientes sin partos previos; la causa principal de la muerte fue la anoxia. Se concluyó que la mayor mortalidad se observa en productos bajo peso aunque no así en edad gestacional. Se derivó también la importante premisa de que todo el personal médico conozca y revise adecuadamente a las gestantes con riesgo de asfixia anteparto e intraparto que pueda influir negativamente en la salud fetal(AU)