| Effect of nitric oxide on the survival rate and incidence of lung injury in newborn lambs with persistent pulmonary hypertension. | |
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MedLine Citation:
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PMID: 8229529 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We previously showed that inhaling nitric oxide (NO) for up to 30 minutes selectively dilates the pulmonary circulation and improves oxygenation in newborn lambs with persistent pulmonary hypertension. In the current study we determined whether inhaling NO for 23 hours increased the survival rate of newborn lambs with persistent pulmonary hypertension, oxidized hemoglobin to methemoglobin, or damaged the lungs. Persistent pulmonary hypertension was created in newborn lambs by ligating the ductus arteriosus 13 days before delivery. Six lambs were randomly selected to breathe NO at 80 parts per million for 23 hours, and 7 control lambs were untreated. Each lamb was delivered at 135 days of gestation (term is 146 days), and the lungs were ventilated at a fraction of inspired oxygen of 0.92. Each of the control lambs died before the end of the study, whereas only one of the NO-treated lambs died (p < or = 0.05). Arterial oxygen tension was greater in the NO-treated lambs by 15 minutes after delivery (63 +/- 17 vs 14 +/- 4 mm Hg). Oxygen tension increased with time in the NO-treated lambs. Inhaled NO increased the concentration of methemoglobin, but this concentration reached a plateau at 3.0% +/- 0.4%. There was evidence of early airway damage in both groups of lambs but no difference between the groups. We conclude that inhaled NO increased survival rates without increasing the incidence of acute lung injury in newborn lambs with persistent pulmonary hypertension. |
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Authors:
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M Zayek; L Wild; J D Roberts; F C Morin |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: The Journal of pediatrics Volume: 123 ISSN: 0022-3476 ISO Abbreviation: J. Pediatr. Publication Date: 1993 Dec |
Date Detail:
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Created Date: 1993-12-22 Completed Date: 1993-12-22 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0375410 Medline TA: J Pediatr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 947-52 Citation Subset: AIM; IM |
Affiliation:
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State University of New York at Buffalo School of Medicine. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Animals, Newborn Hypertension, Pulmonary / drug therapy* Lung / drug effects* Methemoglobinemia / chemically induced Nitric Oxide / adverse effects, metabolism, therapeutic use* Sheep Survival Rate |
| Grant Support | |
ID/Acronym/Agency:
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HL41387/HL/NHLBI NIH HHS |
| Chemical | |
Reg. No./Substance:
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10102-43-9/Nitric Oxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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