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Venous Hypertension in the Newborn Infant associated with Delayed Clamping of the Umbilical Cord 1
Author(s) -
TAYLOR PAUL M.,
EGAN THOMAS J.,
BIRCHARD EDNA L.,
BRIGHT NANCY H.,
WOLFSON JEROME H.
Publication year - 1959
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1959.tb16030.x
Subject(s) - medicine , umbilical cord , venous pressure , umbilical vein , blood pressure , cord , anesthesia , saline , birth weight , vein , obstetrics , surgery , hemodynamics , pregnancy , anatomy , biochemistry , chemistry , in vitro , genetics , biology
Summary The mean umbilical vein pressure of 31 normal infants 5 to 89 hours of age was 92.2 mm of normal saline ±12.8 mm (S.D.). Venous pressure was not influenced by age or birth weight. Continuous recordings of umbilical rein pressure were made on 11 infants whose umbilical cords were clamped a t the time of delivery, and on 20 infants whose cords were clamped several minutes after delivery. The highest pressure recorded in the early‐clamped group was 120 mm; 2 of the 11 infants had this pressure. Seventeen of the 20 late‐clamped infants had levels of venous pressure repeatedly in excess of 120 mm during the first 30‐60 minutes of life with return to the normal range at varying rates. Possible effects of a placental transfusion sufficiently large to raise venous pressure on the status of the newborn infant have been discussed briefly.