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  • Title: Evaluation of infants with bronchopulmonary dysplasia using cardiac catheterization.
    Author: Berman W, Yabek SM, Dillon T, Burstein R, Corlew S.
    Journal: Pediatrics; 1982 Nov; 70(5):708-12. PubMed ID: 7133822.
    Abstract:
    Nine infants with bronchopulmonary dysplasia underwent cardiac catheterization to define thier circulatory status. In room air, the mean cardiac index was normal (3.4 liters/min/sq m), but pulmonary arterial pressure (39 mm Hg, mean) and pulmonary vascular resistance (8.6 Wood units . sq m) were elevated. Preejection period/right ventricular ejection time ratios determined echocardiographically correlated well with values obtained at catheterization, but did not correlate well with hemodynamic values. Administration of 40% and 88% oxygen caused variable responses in hemodynamic measurements. Studies of left ventricular function were normal in all patients. These findings raise questions about the long-term prognosis of infants with bronchopulmonary dysplasia.
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