| Overestimation of pulmonary artery occlusion pressure in pulmonary hypertension due to partial occlusion. | |
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MedLine Citation:
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PMID: 12545000 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To evaluate partial occlusion in patients with pulmonary hypertension with regard to a) the degree to which it leads to overestimation of pulmonary artery occlusion pressure (Ppao) and b) identification of factors that could enhance its recognition. DESIGN: Observational descriptive study. SETTING: Medical intensive care unit. PATIENTS: Fourteen patients with pulmonary hypertension and an increased pulmonary artery diastolic pressure (Ppad) - Ppao gradient (> or = 10 mm Hg). INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The Ppao was recorded during partial occlusion (partial Ppao) and after catheter repositioning to obtain a lower, more accurate value (best Ppao). The error due to partial occlusion, defined as the difference between the partial Ppao and the best Ppao, was 13 +/- 5 mm Hg (range, 6-21 mm Hg). The previously widened Ppad - Ppao gradient invariably narrowed during partial occlusion and then increased by 13 +/- 5 mm Hg (range, 5-23) during the best Ppao measurement. There was a moderate correlation between the error due to partial occlusion (partial Ppao - best Ppao) and both the mean pulmonary artery pressure (r =.77, <.01) and the Ppad - Ppao gradient (r =.79, <.01). CONCLUSIONS: Partial occlusion in patients with pulmonary hypertension may lead to significant overestimation of the Ppao and should be suspected when there is a substantial increase in the Ppao without a concomitant increase in the Ppad, as reflected by a marked narrowing of a previously widened Ppad - Ppao gradient. |
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Authors:
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James W Leatherman; Robert S Shapiro |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Critical care medicine Volume: 31 ISSN: 0090-3493 ISO Abbreviation: Crit. Care Med. Publication Date: 2003 Jan |
Date Detail:
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Created Date: 2003-01-24 Completed Date: 2003-02-14 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0355501 Medline TA: Crit Care Med Country: United States |
Other Details:
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Languages: eng Pagination: 93-7 Citation Subset: AIM; IM |
Affiliation:
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Division of Pulmonary and Critical Care Medicine, Hennepin County Medical Center, Minneapolis, MN, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Catheterization, Swan-Ganz
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instrumentation Critical Care Diagnostic Errors* Equipment Failure Female Hemodynamics Humans Hypertension, Pulmonary / diagnosis* Male Middle Aged Monitoring, Physiologic / methods Pulmonary Wedge Pressure* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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