Feasibility of nitric oxide administration by oxygen hood in neonatal pulmonary hypertension

被引:6
作者
Ambalavanan N. [1 ]
St. John E. [1 ]
Carlo W.A. [1 ]
Bulger A. [1 ]
Philips III J.B. [1 ]
机构
[1] University of Alabama at Birmingham, Division of Neonatology, Department of Pediatrics, Birmingham, AL 35249-6098
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D O I
10.1038/sj.jp.7210652
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摘要
Objective: To test the hemodynamic efficacy and feasibility of nitric oxide (NO) administration by oxygen hood in neonatal pulmonary hypertension. Study Design: A double-hood apparatus was used in which a combination of NO, O2, and N2 was introduced into the inner hood and suctioned from the outer hood. Chronically instrumented non-intubated piglets were exposed to 10% O2 (hypoxia; n = 8) or group B streptococci infusion (GBS; n = 5) to produce pulmonary hypertension and were then exposed to 20 ppm NO. Results: NO decreased ( > 50%) pulmonary artery pressure and vascular resistance in both hypoxia- and GBS-induced pulmonary hypertension, with minimal effects on systemic arterial pressure and cardiac output. NO administration could be performed without detectable environmental leakage. Conclusion: Hood NO administration is feasible and shows hemodynamic efficacy in neonatal piglets with pulmonary hypertension.
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页码:50 / 56
页数:6
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