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Pulse Oximetry in the Diagnosis of Acute Heart Failure.
MedLine Citation:
PMID:  22766468     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
INTRODUCTION AND OBJECTIVES: Oxygen saturation by pulse oximetry is commonly used for monitoring critical patients, but its utility as a diagnostic marker of acute heart failure has not been assessed. This study analyzed the diagnostic role of oxygen saturation by pulse oximetry in a series of patients with acute myocardial infarction. METHODS: In a prospective observational cohort study of 220 consecutive patients with acute myocardial infarction, data collection included baseline oxygen saturation by pulse oximetry (without oxygen), physiologic measurements, Killip class and data from portable chest radiography, recorded at the same hour on each of the first three days after admission. Patients were followed up for one year. RESULTS: There were 612 assessments. Baseline oxygen saturation by pulse oximetry decreased progressively in relation to the presence and the severity of acute heart failure assessed by Killip classes 1 to 3 (mean: 95, 92 and 85, respectively; P<.001) or by Radiology Score 0 to 4 (95, 94, 92, 89 and 83, respectively; P<.001), with a correlation coefficient of 0.66 and 0.63, respectively. Receiver operating characteristic curves disclosed the cut-off of oxygen saturation by pulse oximetry<93 to have the greatest area, with a sensitivity of 65%, specificity 90%, and overall test accuracy 83%. Patients grouped according to lowest oxygen saturation by pulse oximetry showed significantly different rates of one-year mortality or rehospitalization for heart failure. CONCLUSIONS: Baseline oxygen saturation by pulse oximetry is useful in establishing the diagnosis and severity of heart failure in acute settings such as myocardial infarction and may have prognostic implications.The diagnosis may be suspected when baseline oxygen saturation by pulse oximetry is <93. Full English text available from:www.revespcardiol.org.
Authors:
Josep Masip; Maria Gayà; Joaquim Páez; Antoni Betbesé; Francisco Vecilla; Ruben Manresa; Pilar Ruíz
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-3
Journal Detail:
Title:  Revista espanola de cardiologia     Volume:  -     ISSN:  1579-2242     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404277     Medline TA:  Rev Esp Cardiol     Country:  -    
Other Details:
Languages:  ENG; SPA     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Sociedad Española de Cardiología. Published by Elsevier Espana. All rights reserved.
Affiliation:
Unidad de Cuidados Intensivos, Hospital Sant Joan Despí Moisès Broggi, Consorci Sanitari Integral, Universidad de Barcelona, Sant Joan Despí, Barcelona, España.
Vernacular Title:
Pulsioximetría en el diagnóstico de insuficiencia cardiaca aguda.
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