PEDIATRICS Vol. 77 No. 2 February 1986, pp. 212-216
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Is Chloride Depletion an Important Contributing Cause of Death in Infants With Bronchopulmonary Dysplasia?

Jeffrey M. Perlman MD1, Valerie Moore MD1, Marilyn J. Siegel MD1, and Jeffrey Dawson MD1

1 From the Edward Mallinckrodt Department of Pediatrics and the Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis

A retrospective analysis of infants with bronchopulmonary dysplasia requiring prolonged hospitalization (>100 days) was carried out to determine those factors associated with fatal outcome. Twenty-three infants made up the study population. Eleven infants died and 12 survived (survivors). No differences were noted between the groups regarding ventilator requirement, radiographic changes, and medication use (digoxin, aldactazide), except for furosemide which was used twice as frequently in the group of infants who died v the group of infants who survived (P < .001). Differences noted between the groups included moderate hypochloremia (chloride < 80 mEq/L) in all 11 infants who died v six of 12 survivors, severe hypochloremia (chloride < 70 mEq/L) in the nine of 11 infants who died v two of 12 survivors, metabolic alkalosis (pH > 7.45) in nine of 11 infants who died v three of 12 survivors, hypertension (systolic BP > 113 mm Hg) in eight of 11 infants who died v one of 12 survivors, decrease in head growth in ten of the 11 infants who died v one of the 12 survivors; these differences were all significant (P < .001). The metabolic alkalosis and head growth changes appear to be related to the hypochloremia. The data suggest that chloride deficiency may be an important contributing factor in the genesis of poor outcome in infants with bronchopulmonary dysplasia and that close attention to chloride supplementation might influence outcome.

Key Words: chloride depletion • bronchopulmonary dysplasia

Submitted on March 18, 1985
Accepted on May 10, 1985




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