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Chest, Vol 77, 565-567, Copyright © 1980 by American College of Chest Physicians

ARTICLES

Reversible central apnea in an infant with cyanotic heart disease

CE Hunt

The purpose of this report is to present the findings in a neonate with tetralogy of Fallot and a history of prolonged sleep-related apnea requiring resuscitation. At a baseline arterial oxygen pressure of 46 mm Hg, his preoperative responses to carbon dioxide during non-REM sleep (26.1 and 26.6 ml/kg/min/mm Hg of alveolar carbon dioxide tension [PACO2]) were identical to those reported in near-miss sudden infant death syndrome. Following a systemic-pulmonary arterial shunt, the arterial saturation reached 95 percent, and no further apnea occurred. The prompt normalization of the response to carbon dioxide following surgery (75.2 and 75.4 ml/kg/min/mm Hg of PACO2) indicates that, unlike infants with the sudden infant death syndrome, a low sensitivity to carbon dioxide in infants with cyanotic heart disease may be dependent on hypoxemia and, thus, reversible.




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Copyright © 1980 by the American College of Chest Physicians.