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A group of South American investigators have found that certain changes in fetal heart rate are consistently associated with acidosis and hypoxia in utero and should be considered reliable signs of fetal distress. Previously, it has been suggested that measuring pH in utero and at birth, and determining Apgar index scores (neonatal rating of respiration, heart rate, muscle tone, reflex irritability, and skin color) can be helpful in diagnosing damage to fetal cells, particularly those of the central nervous system. "Since, however, determination of the pH of fetal blood is not yet feasible for all obstetricians, it may be extremely valuable to establish fetal heart rate (FHR) patterns for early diagnosis of fetal distress." This was suggested by Roberto Caldeyro-Barcia, MD, during a Symposium on the Child held at the University of Chicago's Billings Hospital. Dr. Caldeyro-Barcia, professor and chairman, obstetrical physiology service and Department of Physiopathology, University of Uruguay,
JAMA – American Medical Association
Published: Sep 19, 1966
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