摘要
Determinations of capillary hematocrit were performed on 202 infants during the first four hours after birth. These infants were delivered at the Hospital of China Medical College, which is located at an altitude of 83.8m above sea level. If the capillary hematocrit was 65% or greater, peripheral venous hematocrit was also determined. Neonatal polycythemia, defined as a venous hematocrit of 65% or greater, occurred in 7.4% of the newborn infants studied. 7.9% of the infants with appropriate birth weights for the gestational age had polycythemia, and 7.1% of the infants with birth weights small for the gestational age were polycythemic. Although, the highest indidence of venous polycythemia was found in term infants who were small for the gestational age and pre-term infants who were appropriate for the gestational age, the next highest incidence was in the term infants who were appropriate for the gestational age. 22.2% of the newborn infants with a capillary hematocrit of 70% or greater had a venous hematocrit of 65% or greater, so that screening for capillary hematocrit at about four hours after birth is recommended for infants at risk. A capillary hematocrit of 65% or greater is a reasonable indicator for further investigation Plethora was the most common symptom among the polycythemic infants. Hypoglycemia occurred in five of the fifteen polycythemic infants (33.3%). There was no close relationship between neonatal polycythemia and neonatal hyperbilirubinemia.
關鍵字
無資料並列摘要
Determinations of capillary hematocrit were performed on 202 infants during the first four hours after birth. These infants were delivered at the Hospital of China Medical College, which is located at an altitude of 83.8m above sea level. If the capillary hematocrit was 65% or greater, peripheral venous hematocrit was also determined. Neonatal polycythemia, defined as a venous hematocrit of 65% or greater, occurred in 7.4% of the newborn infants studied. 7.9% of the infants with appropriate birth weights for the gestational age had polycythemia, and 7.1% of the infants with birth weights small for the gestational age were polycythemic. Although, the highest indidence of venous polycythemia was found in term infants who were small for the gestational age and pre-term infants who were appropriate for the gestational age, the next highest incidence was in the term infants who were appropriate for the gestational age. 22.2% of the newborn infants with a capillary hematocrit of 70% or greater had a venous hematocrit of 65% or greater, so that screening for capillary hematocrit at about four hours after birth is recommended for infants at risk. A capillary hematocrit of 65% or greater is a reasonable indicator for further investigation Plethora was the most common symptom among the polycythemic infants. Hypoglycemia occurred in five of the fifteen polycythemic infants (33.3%). There was no close relationship between neonatal polycythemia and neonatal hyperbilirubinemia.