RT Journal A1 MALINOWSKI BC, KLEINMAN LI T1 POlycythemia in the newborn first observed as distal bowel obstruction JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1979 FD September 1 VO 133 IS 9 SP 962 OP 963 DO 10.1001/archpedi.1979.02130090090020 UL http://dx.doi.org/10.1001/archpedi.1979.02130090090020 AB During the last ten years there have been many reports concerning the clinical symptoms of polycythemia and hyperviscosity in the newborn. The cardiovascular, gastrointestinal (GI), CNS, and renal systems, as well as the infant's calcium and glucose balance, have been shown to be affected by polycythemia.1-5 This report concerns two patients who were admitted to the Newborn Special Care Unit at the Children's Hospital Medical Center, Cincinnati, for poor feeding behavior and abdominal obstruction and who became asymptomatic after a partial-exchange transfusion for polycythemia.Report of Cases.—Case 1.—A female infant was born after 35 weeks' gestation, weighed 1,920 g (20th percentile), and had Apgar scores of 6 and 8 at one and five minutes, respectively. She had mild respiratory distress and was initially placed in an atmosphere of 40% oxygen, but by 10 hours of age she was comfortable in room air. At 2 hours of age,