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Titolo:
Influence of ejection fraction and valvular regurgitation on the accuracy of aortic valve area determination
Autore:
Berglund, H; Kim, CJ; Nishioka, T; Luo, H; Siegel, RJ;
Indirizzi:
Cedars Sinai Med Ctr, Div Cardiol, Los Angeles, CA 90048 USA Cedars Sinai Med Ctr Los Angeles CA USA 90048 , Los Angeles, CA 90048 USA
Titolo Testata:
ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES
fascicolo: 1, volume: 18, anno: 2001,
pagine: 65 - 72
SICI:
0742-2822(200101)18:1<65:IOEFAV>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTIPLANE TRANSESOPHAGEAL ECHOCARDIOGRAPHY; DOPPLER ECHOCARDIOGRAPHY; GORLIN FORMULA; CARDIAC-CATHETERIZATION; CONTINUITY EQUATION; ORIFICE AREA; STENOSIS; SEVERITY; ADULTS; FLOW;
Keywords:
aortic stenosis; mitral regurgitation; left ventricular dysfunction; planimetry; TEE; Doppler; Gorlin formula;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Siegel, RJ Cedars Sinai Med Ctr, Div Cardiol, Room 5335,8700 Beverly Blvd,Los Angeles, CA 90048 USA Cedars Sinai Med Ctr Room 5335,8700 Beverly BlvdLos Angeles CA USA 90048
Citazione:
H. Berglund et al., "Influence of ejection fraction and valvular regurgitation on the accuracy of aortic valve area determination", ECHOCARDIOG, 18(1), 2001, pp. 65-72

Abstract

Objective: To examine the influence of left ventricular dysfunction, aortic regurgitation, and mitral regurgitation on commonly used methods for aortic valve area (AVA) determination. Background: Each method for AVA determination has its inherent limitations. Methods: AVA determinations by transesophageal echocardiography (TEE) using planimetry, transthoracic echocardiography (TTE) with application of the continuity equation, and cardiac catheterization applying the Gorlin formula were performed in 74 patients with aortic stenosis. The severity of the aortic stenosis was defined by consensus of at least two methods. Over- or underestimation of AVA associated with ejection fraction, aortic regurgitation, mitral regurgitation, or severity ofthe aortic stenosis for each method in relation to the other two methods was assessed. Results : Mean AVAs were 1.05 +/- 0.51 by TEE, 1.06 +/- 0.51 by TTE, and 1.08 +/- 0.53 by cardiac catheterization, An overestimation of the severity of the aortic stenosis by the Gorlin formula in patients with moderate-to-severe aortic regurgitation as compared to TEE-derived data was found (P = 0.014). A similar trend of overestimation by catheterization in comparison with the TTE data was found. In, the context of moderate-to-severe mitral regurgitation, AVA determination by TTE overestimated the degree of aortic stenosis as compared to TEE (P = 0.011) and cardiac catheterization (P = 0.023). Conclusions: Overall mean AVA did not differ between methods, suggesting that these three methods are equally accurate in a nonselected clinical patient group. However in the presence of significant aortic regurgitation, the true echocardiographic methods appear more accurate. Our observation of an overestimation of the severity of aortic stenosis by TTE inthe presence of moderate-to-severe mitral regurgitation indicates that this possibility should be accounted for in clinical decisions based on TTE determinations of AVA.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 18:15:36