Risk factors for neonatal encephalopathy in Kathmandu, Nepal, a developing country: unmatched case-control study

Ellis, Matthew; Manandhar, Nilu; Manandhar, Dharma S; Costello, Anthony

doi:10.1136/bmj.320.7244.1229

Cited by 125 publications

(130 citation statements)

References 35 publications

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“…The high proportion of primiparous mothers was also found by other authors [19][20][21]. This could be explained by the fact that first deliveries are more difficult than the subsequent ones.…”

Section: Discussionsupporting

confidence: 63%

Causes of developmental delay in children of 5 to 72 months old at the child neurology unit of Yaounde Gynaeco-Obstetric and Paediatric Hospital (Cameroon)

Nguefack¹,

Kamga²,

Moifo³

et al. 2013

OJPed

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Background: According to the World Health Organization, about 5% of children world-wide of 14-year-old and under have a moderate to severe developmental disability, and up to 15% of children under 5-year-old are developmentally delayed. Purpose: To determine the prevalence, socio-demographic profile, aetiologies, and the clinical presentation of developmental delay in children less than 6-year-old at the child neurology unit in a university-affiliated hospital in Yaounde. Materials and methods: It was a crosssectional descriptive study carried out in Yaounde Gynaeco-Obstetric and Paediatric Hospital (Cameroon) from August to December 2012. Children aged between 5 -72 months with a developmental quotient less than 70 were enrolled. Developmental delay (DD) was diagnosed and classified using the Denver developmental screening test (DDST). Data concerning the child (age, gender, severity of DD), the mother (age, age at conception, educational level, marital status), history of pregnancy and delivery, perinatal and postnatal events, results of para-clinical explorations (EEG, CT-scan, genetic tests), the severity of DD and the probable or demonstrate cause of DD were recorded on a standardized questionnaire. The chisquare test was used to compare variables. Results: During the study period, 2171 children aged 5 -72 months consulted the paediatric department of the hospital, 296 were examined at the child neurology unit of which 153 had a developmental quotient less than 70, giving a hospital prevalence of 7.0% and a prevalence of 51.7% at the child neurology unit. The mean age was 26.6 ± 18.0 months and there were 56% males. The main reason for consulting was tonus disorder (43.8%) and the developmental area of parental concern was the motor domain (90.2%). Regarding the clinical presentation, 75.2% of our population were children with cerebral palsy. DD was severe, mild, moderate and profound respectively in 14.2%, 13.5%, 12.2%, and 11.1%. Gross DD represented 90.2% of all DD children. The causes of DD were hypoxic-ischemic encephalopathy (41.8%), epilepsy (13.7%), sequelae of meningitis (6.5%), sequelae of kernicterus (6.5%), and infectious embryofoetopathies (5.2%). Conclusion: Developmental delay is frequent in paediatric neurology, with perinatal disorders being the leading aetiologies in Cameroon. Prevention of perinatal hypoxic-ischemic encephalopathy risk factors needs to be reinforced.

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Section: Discussionsupporting

confidence: 63%

Causes of developmental delay in children of 5 to 72 months old at the child neurology unit of Yaounde Gynaeco-Obstetric and Paediatric Hospital (Cameroon)

Nguefack¹,

Kamga²,

Moifo³

et al. 2013

OJPed

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“…No association was found between labor with a prolonged expulsive phase and the development of perinatal asphyxia in previous studies; however, triggers of a prolonged phase, such as abnormal fetal presentations (breech presentation, instrumental delivery, dystocia, persistent occiput posterior presentation, head circumference greater than the 97th percentile), have been previously related to the occurrence of this condition (9,13,15).…”

Section: Discussionmentioning

confidence: 77%

Risk factors associated with the development of perinatal asphyxia in neonates at Hospital Universitario del Valle, Cali, Colombia, 2010-2011

et al. 2016

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Introduction: Perinatal asphyxia is one of the main causes of perinatal mortality and morbidity worldwide and it generates high costs for health systems; however, it has modifiable risk factors. Objective: To identify the risk factors associated with the development of perinatal asphyxia in newborns at Hospital Universitario del Valle, Cali, Colombia. Materials and methods: Incident cases and concurrent controls were examined. Cases were defined as newborns with moderate to severe perinatal asphyxia who were older than or equal to 36 weeks of gestational age, needed advanced resuscitation and presented one of the following: early neurological disorders, multi-organ commitment or a sentinel event. The controls were newborns without asphyxia who were born one week apart from the case at the most and had a comparable gestational age. Patients with major congenital malformations and syndromes were excluded. Results: Fifty-six cases and 168 controls were examined. Premature placental abruption (OR=41.09; 95%CI: 4.61-366.56), labor with a prolonged expulsive phase (OR=31.76; 95%CI: 8.33-121.19), lack of oxytocin use (OR=2.57; 95% CI: 1.08 -6.13) and mothers without a partner (OR=2.56; 95% CI: 1.21-5.41) were risk factors for the development of perinatal asphyxia in the study population. Social difficulties were found in a greater proportion among the mothers of cases. Conclusions: Proper control and monitoring of labor, development of a thorough partograph, and active searches are recommended to ensure that all pregnant women have adequate prenatal care with the provision of social support to reduce the frequency and negative impact of perinatal asphyxia.

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“…30,31 Other studies, using a stricter definition of encephalopathy that automatically excludes most conditions with an antenatal or genetic origin, have found that intrapartum events are the main or a contributing factor in the causal pathway of HIE. 12,[32][33][34] None of the previous studies has used neonatal neuroimaging investigations to confirm the presence of acute hypoxicischemic injury of recent onset and to exclude other causes of encephalopathy.…”

Section: Figurementioning

confidence: 99%

Antepartum and Intrapartum Factors Preceding Neonatal Hypoxic-Ischemic Encephalopathy

et al. 2013

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WHAT'S KNOWN ON THIS SUBJECT: Etiology and timing of onset of neonatal hypoxic-ischemic encephalopathy continue to be controversial. Previous studies suggest antepartum events are the main contributing factors, but have used a broad definition of encephalopathy and included infants with genetic, congenital, and developmental abnormalities.WHAT THIS STUDY ADDS: Our study suggests that when strict criteria defining hypoxic-ischemic encephalopathy are applied with supporting neuroimaging evidence of an acute hypoxicischemic insult, intrapartum events are the final and necessary pathway leading to this condition. abstract OBJECTIVE: To determine whether antepartum factors alone, intrapartum factors alone, or both in combination, are associated with term neonatal hypoxic-ischemic encephalopathy (HIE). METHODS:A total of 405 infants $35 weeks' gestation with early encephalopathy, born between 1992 and 2007, were compared with 239 neurologically normal infants born between 1996 and 1997. All cases met criteria for perinatal asphyxia, had neuroimaging findings consistent with acute hypoxia-ischemia, and had no evidence for a non-hypoxic-ischemic cause of their encephalopathy.RESULTS: Both antepartum and intrapartum factors were associated with the development of HIE on univariate analysis. Case infants were more often delivered by emergency cesarean delivery (CD; 50% vs 11%, P , .001) and none was delivered by elective CD (vs 10% of controls). On logistic regression analysis only 1 antepartum factor (gestation $41 weeks) and 7 intrapartum factors (prolonged membrane rupture, abnormal cardiotocography, thick meconium, sentinel event, shoulder dystocia, tight nuchal cord, failed vacuum) remained independently associated with HIE (area under the curve 0.88; confidence interval 0.85-0.91; P , .001). Overall, 6.7% of cases and 43.5% of controls had only antepartum factors; 20% of cases and 5.8% of controls had only intrapartum factors; 69.5% of cases and 31% of controls had antepartum and intrapartum factors; and 3.7% of cases and 19.7% of controls had no identifiable risk factors (P , .001). CONCLUSIONS:Our results do not support the hypothesis that HIE is attributable to antepartum factors alone, but they strongly point to the intrapartum period as the necessary factor in the development of this condition. Pediatrics 2013;132:e952-e959

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Risk factors for neonatal encephalopathy in Kathmandu, Nepal, a developing country: unmatched case-control study

Cited by 125 publications

References 35 publications

Causes of developmental delay in children of 5 to 72 months old at the child neurology unit of Yaounde Gynaeco-Obstetric and Paediatric Hospital (Cameroon)

Causes of developmental delay in children of 5 to 72 months old at the child neurology unit of Yaounde Gynaeco-Obstetric and Paediatric Hospital (Cameroon)

Risk factors associated with the development of perinatal asphyxia in neonates at Hospital Universitario del Valle, Cali, Colombia, 2010-2011

Antepartum and Intrapartum Factors Preceding Neonatal Hypoxic-Ischemic Encephalopathy

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