Present study was carried out to determined the influence on peri-and postnatal status of infant born by breech deliveries. For the purpose of study of perinatal status,_ the results of survey of 1,250 breech presentation from 3 institution have been presented. The observation of postnatal development was conducted in the 332 infants who were born at Korea University hospital until at the age of 2 to 21/z years.
The following results were obtained.
1. The incidence of breech presentation was 4.2% of the total deliveries and it is evident that breech presentation was accompanied by an increased premature birth.
2. Prenatal mortality rate of breech delivery was higher (16.88%) than other delivery (2.50/6). In which prenatal mortality of low-birth-weight breech was 38.690 but other delivery was 1.6%, pre-term breech 38.6%, other delivery 16.1%, and full-term breech was 5.67% in stead of 1.11% in other delivery.
3. Postnatal mortality rate for breech newborn was 22.6% and other delivery was 1.5%. It is estimated that risk of pre-and postnatal mortality for breech presentation was 2 to 3 or 6 to 7 times more than non-breech deliveries.
4. Of the 332 infants who survived, 271 or 81.60, were apparently well and left the hospital in good condition.
5. Of the 21 infants with moderate asphyxia, 15 apparently appeared absolutely normal. With the remaining 6, in addition to neurologic findings (mainly spasticity), their development was well behind the average for their age.
6. Of the 15 with nerve paralysis, three of brachial and two of the facial group were still in almost the same condition. In ten others, the nerve function was completely improved.
7. Two of the six infants with injury to the genitalia who were seen again at the age of two still had gross hydrocele.
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