Determinants of birth asphyxia among newborns in Debre Berhan referral hospital, Debre Berhan, Ethiopia: a case-control study

Determinants of birth asphyxia in urban south Ethiopia

Birth asphyxia is a well-known cause of neonatal mortality, and the survivors suffer from long-lasting sequels such as seizures, intellectual disabilities, and motor disorders that are great challenges for newborns. Elucidating the determinants of birth asphyxia helps implement evidence-based practice in the local context. Thus, this study aimed at elucidating the determinants of birth asphyxia in urban south Ethiopia. A community-based unmatched nested case-control study was conducted on a cohort of 2548 pregnant women who were followed up until delivery in urban areas of Hadiya Zone, south Ethiopia. All newborns who experienced birth asphyxia (n = 118) were taken as cases. Newborns who were randomly selected from the risk-set (n = 472) were taken as controls (those without birth asphyxia). A binary logistic regression was done using R software. Induction of labor [AOR = 2.98, 95% CI: 1.20, 7.42], prolonged labor [AOR = 2.12, 95% CI: 1.02, 4.37], delivery through cesarean section [AOR = 3.81, 95% CI: 1.67, 8.72], instrumental delivery [AOR = 3.91, 95% CI: 1.72, 8.89], and low birth weight [AOR = 6.52, 95% CI: 3.40, 12.51] were determinants of birth asphyxia. Asphyxia during birth was mainly related to obstetric care and maternal nutrition, highlighting the need to pay attention during the course of labor and maternal nutrition during pregnancy. This study might have selection bias and loss of power so careful interpretation of the results is needed.

Prevalence and risk factors associated with birth asphyxia among neonates delivered in China: a systematic review and meta-analysis

BACKGROUND

Birth asphyxia is a critical condition caused by an insufficient oxygen supply during delivery, and it poses a major threat to the health of newborns. The present meta-analysis aimed to estimate the prevalence of birth asphyxia among neonates and identify its risk factors in China.

METHODS

PubMed, EMBASE, Scopus, Web of Science, the China Academic Journals (CNKI), the Chinese Biomedical Literature (CBM), the China Science and Technology Journal Database (VIP), and the WanFang database were searched for related publications. Two researchers independently selected the literature, extracted the relevant data, and assessed its methodological quality. The meta-analysis applied a random-effects model with Stata 17.0 software to calculate the pooled prevalence of birth asphyxia among neonates delivered in China and to merge the odds ratios (ORs) of risk factors. Subgroup analysis was performed on the included studies. Publication bias was assessed by funnel plots and Egger's test.

RESULTS

Eighty studies were eligible for inclusion. The overall prevalence of birth asphyxia in newborns was 4.8% (95% CI, 4.5%-5.2%). In the subgroup analyses, the northern area presented the highest prevalence (5.1%; 95% CI, 4.1%-6.3%), followed by the southern area (4.1%; 95% CI, 3.3%-5.1%). The rural setting presented the highest prevalence (6%; 95% CI, 4.6%-7.4%), followed by the urban (4.2%; 95% CI, 4.6%-7.4%) and mixed (5.8%; 95% CI, 5.3%-6.3%) settings. The Apgar score demonstrated the highest prevalence (4.6%; 95% CI, 3.8%-5.4%), followed by the Apgar score with the umbilical artery blood pH (3.7%; 95% CI, 2.2%-5.7%). A significant difference in prevalence was found between studies with sample sizes greater than 5,000 (2.2%; 95% CI, 1.6%-3%) and those with 5,000 or fewer participants (6.2%; 95% CI, 5.5%-7.1%). Furthermore, there was a significant decrease in the incidence of birth asphyxia from 1995-2016 (4.9%; 95% CI, 4.2%-5.9%) to 2017-2023 (3.7%; 95% CI, 2.6%-5%). Placental abruption (OR = 5; 95% CI, 3.08-8.13), placenta previa (OR = 2.57; 95% CI, 1.84-3.58), advanced maternal age (OR = 3.94; 95% CI, 1.46-10.62), primigravida (OR = 5.33; 95% CI, 0.41-68.71), premature birth (OR = 3.36; 95% CI, 2.61-4.32), intrauterine distress (OR = 4.48; 95% CI, 3.47-5.80), stained amniotic fluid (OR = 3.28; 95% CI, 2.25-4.79), macrosomia (OR = 6.30; 95% CI, 0.61-65.22), foetal malformation (OR = 7.44; 95% CI, 1.46-38.02), breech birth (OR = 2.42; 95% CI, 1.24-4.73), caesarean section (OR = 1.72; 95% CI, 0.91-3.24), assisted delivery (OR = 13.62; 95% CI, 5.50-33.73), prolonged second stage of labour (OR = 1.43; 95% CI, 0.68-3.01), and malpresentation (OR = 4.20; 95% CI, 2.21-7.99) were major risk factors.

CONCLUSIONS

The prevalence of birth asphyxia among newborns in China is relatively high. In addition, 14 risk factors are related to neonatal birth asphyxia. Urgent attention needs to be focused on regionalized maternal and child management to address this problem in China.

Determinants of birth asphyxia among neonates admitted to neonatal intensive care units in hospitals of the Wolaita zone, Southern Ethiopia: A case-control study

Background

Birth asphyxia, according to the World Health Organization (WHO), is the inability of breathing to start and continue automatically at birth. Blood-gas exchange is impaired, which results in increased hypoxia, hyperapnea, and substantial metabolic acidosis. The aim of this study was to determine the factors contributing to birth asphyxia in infants admitted to neonatal intensive care units in hospitals in the Wolaita Zone.

Methods

An institution-based, unmatched case-control study among neonates admitted to neonatal intensive care units in Wolaita Zone hospitals was conducted from March 1 to April 15, 2021. With 148 cases and 294 controls and a case-to- control ratio of 1:2, a sample size of 442 was determined. The pre-tested and structured Open Data Kit collect mobile application (v1.26.1) was used to collect the data, and SPSS version 25 was used for analysis. Using adjusted odd ratios and their corresponding 95 % confidence intervals, bivariate and multivariable logistic regression analyzes were performed.

Results

A total of 143 cases and 286 controls were included making. the response rate 97 %. Meconium or blood-stained amniotic fluid (AOR = 5.43, 95%CI:3.10-9.50), mothers who experienced any of dangerous symptom during pregnancy (AOR = 3.71, 95%CI: 1.56-8.65), premature rupture of membrane (AOR = 3.12, 95%CI: 1.42-6.83), hypothermic newborn (AOR = 4.57, 95CI: 1.77-11.81), labor not supported by Basic Emergency Obstetric and Neonatal Care (BEMONC) trained health professional (AOR = 3.23, 95%CI: 1.83-5.71), birth weight of less than 2500 gm (AOR = 2.68, 95%CI: 1.04-6.92), sub-standard filling of partograph (AOR = 4.03, 95%CI: 2.19-7.41), not filling on partograph during follow-up (AOR = 8.16, 95%CI: 2.24-29.66) and assisted vaginal delivery (AOR = 1.87, 95%CI:1.03-3.39) were identified as determinants of birth asphyxia.

Conclusion

In this study, fetal conditions such as hypothermia and low birth weight, changes in the color of amniotic fluid, dangerous pregnancy symptoms, membrane rupture, standard filling of the partograph, and BEMONC training were factors that predicted birth asphyxia. Therefore, prompt and effective management of fetal and maternal problems and as well as the development of health professionals' BEMONC competence are crucial.

Risk Factors for Birth Asphyxia in Hospital-Delivered Newborns in Dodoma, Tanzania: A Case-Control Study

Introduction

Asphyxia at birth remains the leading cause of neonatal morbidity and mortality worldwide, accounting for ∼23% of all neonatal deaths. Although the causes vary from country to country, early identification and treatment of risk factors can improve the situation.

Objectives

To determine the risk factors of birth asphyxia in hospital-delivered neonates in Dodoma, Tanzania.

Methods

A matched case-control study was conducted from May to July 2017 at Dodoma Region Referral Hospital. Data were collected using a semistructured questionnaire and a standard antenatal care index card. Cases were neonates diagnosed with asphyxia at birth ( N  =  100), while controls were neonates not diagnosed with asphyxia at birth ( N  =  300). A binary logistic regression model was used to assess the independent variables associated with birth asphyxia and reported as crude and adjusted odds ratios along with their 95% confidence intervals.

Results

A total of 400 newborns and their birth mothers were involved in the study. The average age of the case mothers was 26.9 years ( SD  =  7.85) and that of the control mothers was 27.24 years ( SD  =  6.08). Place of residence, anemia, maternal age, prenatal visits attended, use of herbs during labor, previously complicated pregnancy, duration of labor, meconium-stained amniotic fluid, and mode of delivery were predictors of birth asphyxia.

Conclusion

The study showed that most predictors of birth asphyxia can be prevented. The results suggest appropriate health education before conception, effective follow-up through prenatal care, early identification and treatment of high-risk pregnant women, and proper monitoring of labor and delivery.

Risk Factors for Birth Asphyxia in Hospital-Delivered Newborns in Dodoma, Tanzania: A Case-Control Study

Introduction

Asphyxia at birth remains the leading cause of neonatal morbidity and mortality worldwide, accounting for ∼23% of all neonatal deaths. Although the causes vary from country to country, early identification and treatment of risk factors can improve the situation.

Objectives

To determine the risk factors of birth asphyxia in hospital-delivered neonates in Dodoma, Tanzania.

Methods

A matched case-control study was conducted from May to July 2017 at Dodoma Region Referral Hospital. Data were collected using a semistructured questionnaire and a standard antenatal care index card. Cases were neonates diagnosed with asphyxia at birth (N  =  100), while controls were neonates not diagnosed with asphyxia at birth (N  =  300). A binary logistic regression model was used to assess the independent variables associated with birth asphyxia and reported as crude and adjusted odds ratios along with their 95% confidence intervals.

Results

A total of 400 newborns and their birth mothers were involved in the study. The average age of the case mothers was 26.9 years (SD  =  7.85) and that of the control mothers was 27.24 years (SD  =  6.08). Place of residence, anemia, maternal age, prenatal visits attended, use of herbs during labor, previously complicated pregnancy, duration of labor, meconium-stained amniotic fluid, and mode of delivery were predictors of birth asphyxia.

Conclusion

The study showed that most predictors of birth asphyxia can be prevented. The results suggest appropriate health education before conception, effective follow-up through prenatal care, early identification and treatment of high-risk pregnant women, and proper monitoring of labor and delivery.

The determinants of neonatal asphyxia in the tropical province of China: A case-control study

As the major public health problem among under-5 children in the world, neonatal asphyxia (NA) contributes to 24% of the main causes of neonatal death. The effects of NA is not only limited to death but also has a long-term brain injury with lifelong adverse effects. Therefore, the goal of this study was to identify determinants of NA among newborns in the tropical province of China to guide early interventions and improve the survival and quality of life of these infants. A case control study was conducted at Hainan Women and Children's Medical Center from January 1 to December 31, 2021. A total of 255 newborns (85 cases and 170 controls, 1:2 case to control ratio) were enrolled in the study. A systematic random sampling approach was adopted based on hospital delivery registration. Structured questionnaires were used to collected data. The data was entered into statistical software SPSS version 20.0 for analysis. In the bivariable analysis, variables with P values less than .1 were entered into multivariable logistic regression analysis. At a P value of .05, a statistically significant level was reported. Amniotic fluid stained by meconium/blood (AOR = 3.19, 95% confidence interval [CI]: 1.47-6.95), primiparity, fetal presentation of malpresentation (AOR = 3.89, 95% CI: 1.25-12.09), and low birth weight (AOR = 10.51, 95% CI: 3.02-36.55) were to be significantly associated with NA. This study identified that amniotic fluid stained by meconium/blood, primiparity, low birth weight were determinants of NA. Thus, preventive solutions such as close monitoring of fetus presentation, meliorating the obstetric care setup during antenatal care consultations should be stressed in China.

[Risk factors for neonatal asphyxia and establishment of a nomogram model for predicting neonatal asphyxia in Hubei Enshi Tujia and Miao Autonomous Prefecture: a multicenter study]

OBJECTIVES

To investigate the risk factors for neonatal asphyxia in Hubei Enshi Tujia and Miao Autonomous Prefecture and establish a nomogram model for predicting the risk of neonatal asphyxia.

METHODS

A retrospective study was conducted with 613 cases of neonatal asphyxia treated in 20 cooperative hospitals in Enshi Tujia and Miao Autonomous Prefecture from January to December 2019 as the asphyxia group, and 988 randomly selected non-asphyxia neonates born and admitted to the neonatology department of these hospitals during the same period as the control group. Univariate and multivariate analyses were used to identify risk factors for neonatal asphyxia. R software (4.2.2) was used to establish a nomogram model. Receiver operator characteristic curve, calibration curve, and decision curve analysis were used to assess the discrimination, calibration, and clinical usefulness of the model for predicting the risk of neonatal asphyxia, respectively.

RESULTS

Multivariate logistic regression analysis showed that minority (Tujia), male sex, premature birth, congenital malformations, abnormal fetal position, intrauterine distress, maternal occupation as a farmer, education level below high school, fewer than 9 prenatal check-ups, threatened abortion, abnormal umbilical cord, abnormal amniotic fluid, placenta previa, abruptio placentae, emergency caesarean section, and assisted delivery were independent risk factors for neonatal asphyxia (P<0.05). The area under the curve of the model for predicting the risk of neonatal asphyxia based on these risk factors was 0.748 (95%CI: 0.723-0.772). The calibration curve indicated high accuracy of the model for predicting the risk of neonatal asphyxia. The decision curve analysis showed that the model could provide a higher net benefit for neonates at risk of asphyxia.

CONCLUSIONS

The risk factors for neonatal asphyxia in Hubei Enshi Tujia and Miao Autonomous Prefecture are multifactorial, and the nomogram model based on these factors has good value in predicting the risk of neonatal asphyxia, which can help clinicians identify neonates at high risk of asphyxia early, and reduce the incidence of neonatal asphyxia.