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KMID : 0367419630060010011
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Journal of Korean Pediatric Society
1963 Volume.6 No. 1 p.11 ~ p.17
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Statistical Observation for Birth rate, Growth and Development of Premature Infants
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Abstract
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According to the reports made by Fels, Sandberg and University of Thokw, incidence of premature in fants tend to be decreasing in recent years. But we are not aware of any published records concerning statistical analysis of premature infants in Korea. And thus it was thought to be a valuable data to have the statistics of premature infants in Korea. We have analysed statistically approximately 740 premature infants that were observed during the last 5 years at Pediatric department of Medical school, Ewha university.
1. Birth rate of premature newbcrn infants From 1958 to 1961 there was a increasing tendency from 6.7% to 9.3%, Wheras in 1951 the percentile was reduced to 7.1% The mean birth rate of premature infants was 8.2% of the total births during the period of 1958 to 1961.
2. Sex differences During the same period premature male were 45.9% and female were 51.1% of total premature infants. This indicates higher birth rate of female premature newborn infants(6.2%)
3. Birth weight versus sexes in the premature infants weighing less than* 1.5 Kg, males showed higher rate than 1.5 females on the contrary those weighing more than 1.5 Kg. females were predominat.
4. Correlation between gestation period and birth weight, hight, head circumferance and chest circumferance The longer than gestation period, the greater birth weight, height, head and chest circumferance, which means that there is definite correlaticn between gestation period and birth weight, head and chest circumferance. However the premature was seen ever in gestaticn period of more than 40 weeks.
5. Physiologic weight loss and regaining The group of lower birth weight indicates the longer weight loss period and higher reducing rate.
6. The pattern of weight gaining during the first month of life There was a tendency to have slow weight gaining in the group of lower birth weight.
7. Relation to Apgar score and also the prognosis was poorer.
8. Mortality rate during the first week of life The mortality rate was higher in the group of lower birth weight and lower was seen in heavier groug within the first week of life. The mean mortality rate was 29.4.
9. The cause of death The unknown cause of death occupied 43.1%, and 31.8% was most likely due to acute respiratcry distress syndrome.
10. Growth rate of premature infant in group of birth weight range 2.0 to 2.5 Kg.
a) Weight: at 4 months of age birth was doubled and within to months of age the weight resched average range of full-term infant.
b) Head and chest circumferance: Could reach to the standard value of full-term infant within a year.
c) Height: However in height there was a delay reaching the average value It seemed to be slower in female infant compared with male growth pattern.
11) Morbidity during the infantile period Respiratory infection and diarrhea were the most common
illness in premature infant as it is the case in full-term infants (28.5%) It was also observed that physiologic iron deficiency anemia was severer than full-term infant, and also the severity seemed to be related to the birth weight, i.e., the lower birth weight showed the severer anemia
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