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Titolo:
Non-invasive cardiac output evaluation during a maximal progressive exercise test, using a new impedance cardiograph device
Autore:
Richard, R; Lonsdorfer-Wolf, E; Charloux, A; Doutreleau, S; Buchheit, M; Oswald-Mammosser, M; Lampert, E; Mettauer, B; Geny, B; Lonsdorfer, J;
Indirizzi:
Hop Univ Strasbourg, Hop Civil, Serv Explorat Fonctionnelles Resp Cardiocirculat, F-67091 Strasbourg, France Hop Univ Strasbourg Strasbourg France F-67091 F-67091 Strasbourg, France
Titolo Testata:
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 3-4, volume: 85, anno: 2001,
pagine: 202 - 207
SICI:
1439-6319(200108)85:3-4<202:NCOEDA>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
AEROBIC EXERCISE; FICK; RELIABILITY; CATHETERIZATION; VALIDITY; REST;
Keywords:
impedance; cardiography; cardiac output; maximal exercise test;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Richard, R Hop Univ Strasbourg, Hop Civil, Serv Explorat Fonctionnelles Resp Cardiocirculat, BP 426, F-67091 Strasbourg, France Hop Univ Strasbourg BP 426 Strasbourg France F-67091 g, France
Citazione:
R. Richard et al., "Non-invasive cardiac output evaluation during a maximal progressive exercise test, using a new impedance cardiograph device", EUR J A PHY, 85(3-4), 2001, pp. 202-207

Abstract

One of the greatest challenges in exercise physiology is to develop a valid, reliable, non-invasive and affordable measurement of cardiac output (CO). The purpose of this study was to evaluate the reproducibility and accuracy of a new impedance cardiograph device, the Physio Flow, during a 1-min step incremental exercise test from rest to maximal peak effort. A group of 12 subjects was evaluated to determine the reproducibility of the method as follows: (1) each subject performed two comparable tests while their CO wasmeasured by impedance cardiography using the new device (COImp1, COImp2), and (2) in a subgroup of 7 subjects CO was also determined by the direct Fick method (COFick) during the second test. The mean difference between the values obtained by impedance (i.e. COImp1-COImp2) was -0.009 1.min(-1) (95%confidence interval: -4.2 1.min(-1), 4.2 1.min(-1)), and CO ranged from 3.55 1.min(-1) to 26.75 1.min(-1) (n=146). When expressed as a percentage, the difference (COImp1-COImp2) did not vary with increasing CO. The correlation coefficient between the values of COImp and COFick obtained during the second exercise test was r=0.94 (P<0.01, n=50). The mean difference expressed as percentage was -2.78% (95% confidence interval: -27.44%, 21.78%). We conclude that COImp provides a clinically acceptable evaluation of CO in healthy subjects during an incremental exercise.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 09:15:57