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Twin pregnancy. Neonatal morbidity and mortality.

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      Abstract

      The neonatal morbidity and mortality rate of 335 twin pairs born during the years 1965-1973 was investigated. 649 twins were born alive. 29 % of the twins were preterm. 31 % of the twins were small for date infants, and 41 % weighed less than 2 500 g. Mean birth weight was 2 590 g in A twins and 2 560 g in B twins. The neonatal mortality (0-28 days) was 7.1 %. The most common causes of death were the respiratory distress syndrome, intracranial haemorrhage and anoxia. Low one minute Apgar scores occurred more often in B twins than among A twins. Breech delivery gave low one minute Apgar scores more often than did spontaneous vertex delivery in both twins. Full term twins and infants weighing more than 2 500 g had fewer low one minute Apgar scores than the preterm infants and those with low birth weight. Neonatal disorders were equally common in both twins except the birth asphyxia and/or aspiration syndrome, which were more frequent in the B twins. The respiratory distress syndrome was diagnosed in 8 % of A twins and 12 % of B twins. Hypoglycaemia was recorded for 8 %, and hyperbilirubinaemia exceeding 15 mg % for 7 %. Infections occurred in 6 %. Transfusion syndrome was verified in 7 % and malformations in 6 %. Although mortality in twin pregnancies has declined, neonatal morbidity is very high. Twin pregnancies thus form a high risk group for obstetricians and pediatricians.

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      Journal
      Acta Obstet Gynecol Scand Suppl
      Acta obstetricia et gynecologica Scandinavica. Supplement
      0300-8835
      0300-8835
      1975
      : 44
      1060359

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