Bourchier D, Weston P J
Newborn Unit, Waikato Hospital, Hamilton.
N Z Med J. 1991 Jan 23;104(904):11-2.
A cohort of very low birthweight (VLBW) infants (ie, less than 1500 g) who were admitted to the newborn unit, Waikato Hospital between 1984 and 1988 were followed to the age of 12 months. Four hundred and twenty-five infants were admitted with 385 surviving the neonatal period. A further 29 infants died in the postneonatal period (68.2 per 1000 livebirths). Sixteen of the infants died during their initial hospitalisation - primarily from complications of prematurity, while the remaining 13 died following discharge from hospital (9 from sudden infant death syndrome). The postneonatal mortality rate was 3-5 fold greater than that described in similar studies, reflecting the generally increased rate in New Zealand and a lower neonatal mortality rate. The duration of mechanical ventilation was associated with an increased risk of postneonatal death, but no risk factors for posthospital discharge death could be identified.
对1984年至1988年间入住怀卡托医院新生儿病房的一组极低出生体重（VLBW）婴儿（即体重不足1500克）进行了随访，直至其12个月龄。共有425名婴儿入院，其中385名存活至新生儿期。另有29名婴儿在新生儿后期死亡（每1000例活产中有68.2例）。16名婴儿在首次住院期间死亡，主要死于早产并发症，其余13名在出院后死亡（9名死于婴儿猝死综合征）。新生儿后期死亡率比类似研究中描述的高出3至5倍，这反映了新西兰总体死亡率的上升以及较低的新生儿死亡率。机械通气时间与新生儿后期死亡风险增加有关，但未发现出院后死亡的危险因素。
