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Войти в исследования The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2019
Hospital-related, maternal, and fetal risk factors for neonatal asphyxia and moderate or severe hypoxic-ischemic encephalopathy: a retrospective cohort study.
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Wood Stephen, Crawford Susan, Hicks Matt, Mohammad Khorshid
Аннотация
AIM: A previous large US study had documented an increased risk of asphyxia in small volume and rural hospitals. Our objective was to evaluate this in all hospitals in Alberta, a Canadian province.
METHODS: Retrospective cohort study of all singleton births ≥ 35-week gestation, in Alberta, from 2002-16 recorded in a perinatal database. Asphyxia was defined as intrapartum stillbirth or neonatal death from asphyxia or Neonatal Intensive Care Unit admission and at least two of the following: a. Apgar score of ≤ 5 at 10 minutes; b. mechanical ventilation or chest compressions for resuscitation within 10 minutes; c. cord pH < 7.00 (venous or arterial), or arterial base excess ≥ 12 at birth. Urban hospitals were defined as those serving a population of ≥ 50 000. Hospital volume was categorized by the following: urban: < 1200, 1200-2399, 2400-3600, > 3600 annual births and Rural: < 50, 50-599, 600-1699 annual births. Data on moderate-severe neonatal hypoxic-ischemic encephalopathy was also obtained from two provincial asphyxia databases for 2010-2016.
RESULTS: The overall rate of neonatal asphyxia was 2.28 per 1000 births for the study period and was 2.5/1000 in the urban hospitals and 1.35/1000 in the rural hospitals, OR: 1.86 95% CI (1.58, 2.19). The rate of moderate or severe neonatal hypoxic-ischemic encephalopathy was 0.9/1000 and was not associated with urban hospital birth; OR: 1.12 95%CI (0.82, 1.53) hospital volume was also not associated with asphyxia or moderate or severe neonatal hypoxic-ischemic encephalopathy.
CONCLUSIONS: This study observed similar rates of asphyxia and moderate or severe neonatal hypoxic-ischemic encephalopathy for rural and urban hospitals in Alberta and no association with hospital volume.
METHODS: Retrospective cohort study of all singleton births ≥ 35-week gestation, in Alberta, from 2002-16 recorded in a perinatal database. Asphyxia was defined as intrapartum stillbirth or neonatal death from asphyxia or Neonatal Intensive Care Unit admission and at least two of the following: a. Apgar score of ≤ 5 at 10 minutes; b. mechanical ventilation or chest compressions for resuscitation within 10 minutes; c. cord pH < 7.00 (venous or arterial), or arterial base excess ≥ 12 at birth. Urban hospitals were defined as those serving a population of ≥ 50 000. Hospital volume was categorized by the following: urban: < 1200, 1200-2399, 2400-3600, > 3600 annual births and Rural: < 50, 50-599, 600-1699 annual births. Data on moderate-severe neonatal hypoxic-ischemic encephalopathy was also obtained from two provincial asphyxia databases for 2010-2016.
RESULTS: The overall rate of neonatal asphyxia was 2.28 per 1000 births for the study period and was 2.5/1000 in the urban hospitals and 1.35/1000 in the rural hospitals, OR: 1.86 95% CI (1.58, 2.19). The rate of moderate or severe neonatal hypoxic-ischemic encephalopathy was 0.9/1000 and was not associated with urban hospital birth; OR: 1.12 95%CI (0.82, 1.53) hospital volume was also not associated with asphyxia or moderate or severe neonatal hypoxic-ischemic encephalopathy.
CONCLUSIONS: This study observed similar rates of asphyxia and moderate or severe neonatal hypoxic-ischemic encephalopathy for rural and urban hospitals in Alberta and no association with hospital volume.