We dertermined the causes an outcome of 288 cases of preterm infants at Sanggye Paik Hospital from Jan. 1 to Dec 31, 1991.
The results were as follows:
1. When the preterm births were divided by etiology. 48.6% followed spontaneous PROM. 31.9% followed spontaneous preterm labor, and 19.4% were indicated.
2. Of 288 preterm infants. 56.6% occurred at 35-36 weeks. 30.9% at 31-34 weeks, and 12.5% at or before 30 weeks.
3. Of 13.9% of preterm births following spontaneous oset of labor before 35 weeks gestation. 5.9% were at less than 3cm dilatation.
4. The neonatal mortality was 185.19 per 1000 live births in indicated delivery, 71.43 in PROM and 86.96 in spontaneous laobr.
5. The survival rate was 25% at 26-27 weeks. 54% at 28-30 weeks and over 90% after 31 weeks.
6. When the survival rate was divided according to birth weight, 28% in 900-1100gm, 60% in 1101-1500gm, 91% in 1501-2000gm, and 99.5% over 2000mg.
7. To increase the suvival rate of preterm infants, the minimal gestastional age should be 27 weeks’ gestation and the birth weight be 900gm.
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