Am J Perinatol 1998; 15(1): 3-8
DOI: 10.1055/s-2007-993889

© 1998 by Thieme Medical Publishers, Inc.

Systemic Hypertension in Very Low-Birth Weight Infants with Bronchopulmonary Dysplasia: Incidence and Risk Factors

A. Alagappan, M. H. Malloy
  • Department of Pediatrics, Division of Neonatology, University of Texas Medical Branch, Galveston, Texas
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Publication History

Publication Date:
04 March 2008 (online)


The purpose of our study was to determine if systemic hypertension (HTN) occurred among infants with birth weight less than 1250 g (very low-birth-weight [VLBW] infants) in association with Bronchopulmonary dysplasia (BPD). We designed a historical cohort study to review the clinical course and the occurrence of systemic HTN in infants born during the year 1992 with birth weights between 600-1250 g. The overall incidence of HTN was 6.8% (5 of 73) and the incidence in infants with BPD was 12% (5 of 41). The mean age of onset of HTN was 105 days (range 90 to 133 days), and at the time of discharge 3 of 5 (60%) infants remained hypertensive and 3 of 5 (60%) were on supplemental oxygen. All the five hypertension infants (100%) were on supplemental oxygen at 36 weeks of postceptional age compared to 18 of 36 (50%) of nonhypertensive BPD infants. The association between HTN and severe BPD was further denoted by longer hospital stay (145 ± 37 vs. 94 ± 28 days, p = 0.004), longer duration of O2 therapy (108 ± 36 vs. 67 ± 34 days, p = 0.01), and prolonged use of aminophylline (104 ± 44 vs. 61 ± 23 days, p = 0.03), in the hypertensive BPD infants versus nonhypertensive BPD infants, respectively. This study substantiates an increased risk of developing systemic HTN, among VLBW infants with severe BPD.