Mortality and morbidity of extremely low birth weight infants in Hong Kong, 2010-2017: a single-centre review
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摘要Background: Extremely low birth weight (ELBW) infants exhibit high rates of mortality and morbidity. We retrospectively assessed factors associated with mortality and morbidity among ELBW infants.

Methods: Perinatal demographic data were reviewed for all ELBW infants born between 2010 and 2017 at a tertiary neonatal unit.

Results: For non-survivors (21% of ELBW infants) and survivors, the median gestational ages were 24.1 and 26.2 weeks, respectively, and median birth weights were 650 g and 780 g, respectively (all P<0.001). Regression analyses showed that non-survival was positively associated with lower gestational age (adjusted odds ratio [aOR]=6.71 for every 1-week decrease; 95% confidence interval [CI]=1.73-26.00; P=0.006) and grade 3 or 4 intraventricular haemorrhage (aOR=29.23; 95% CI=1.39-613.84; P=0.030); non-survival was negatively associated with the presence of bronchopulmonary dysplasia (aOR=0.01; 95% CI= <0.001-0.23; P=0.005); length of neonatal intensive care unit stay for survivors was positively associated with the presence of necrotising enterocolitis (B-coefficient=89.60; 95% CI=43.86-135.34; P<0.001); and length of hospital stay for survivors was positively associated with the presence of necrotising enterocolitis (B-coefficient=2.08; 95% CI=0.43-3.73; P=0.015) and a low Apgar score at 1 minute (B-coefficient= –0.63; 95% CI= –1.04 to –0.22; P=0.003).

Conclusion: Extremely low birth weight infants exhibited significant mortality and morbidity; there was no survival prior to 23.6 weeks’ gestation or below 550 g birth weight. The presence of grade 3 or 4 intraventricular haemorrhage was independently associated with non-survival. Survivors were significantly more likely to exhibit bronchopulmonary dysplasia; survivors with necrotising enterocolitis were more likely to require longer stays in the neonatal intensive care unit and in hospital.
著者KL Hon, Sharon Liu, Joey CY Chow, Kathy YC Tsang, Hugh S Lam, KW So, Yvonne KY Cheng, Alexander KC Leung, William Wong
期刊名稱Hong Kong Medical Journal
出版年份2018
月份10
卷號24
期次5
出版地Hong Kong
頁次460 - 465
國際標準期刊號1024-2708
語言美式英語

上次更新時間 2020-13-09 於 01:37