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Titolo: Echocardiographic assessment of ejection fraction in left ventricular hypertrophy
Autore: Wandt, B; Bojo, L; Tolagen, K; Wranne, B;
 Indirizzi:
 Cent Hosp, Dept Clin Physiol, S65185 Karlstad, Sweden Cent Hosp Karlstad Sweden S65185 Clin Physiol, S65185 Karlstad, Sweden Cent Hosp, Dept Med, S65185 Karlstad, Sweden Cent Hosp Karlstad Sweden S65185 sp, Dept Med, S65185 Karlstad, Sweden Linkoping Univ Hosp, Dept Clin Physiol, S58185 Linkoping, Sweden Linkoping Univ Hosp Linkoping Sweden S58185 , S58185 Linkoping, Sweden
 Titolo Testata:
 HEART
fascicolo: 2,
volume: 82,
anno: 1999,
pagine: 192  198
 SICI:
 13556037(199908)82:2<192:EAOEFI>2.0.ZU;29
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 ATRIOVENTRICULAR PLANE DISPLACEMENT; HEARTFAILURE; DILATED CARDIOMYOPATHY; MYOCARDIALINFARCTION; HYPERTENSIVE HEARTS; DIASTOLIC FUNCTION; MITRAL ANULUS; MOTION; AGE; CINEANGIOGRAPHY;
 Keywords:
 left ventricular hypertrophy; ejection fraction; mitral ring motion; atrioventricular plane displacement;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Clinical Medicine
 Life Sciences
 Citazioni:
 41
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Wandt, B Cent Hosp, Dept Clin Physiol, S65185 Karlstad, Sweden Cent HospKarlstad Sweden S65185 iol, S65185 Karlstad, Sweden



 Citazione:
 B. Wandt et al., "Echocardiographic assessment of ejection fraction in left ventricular hypertrophy", HEART, 82(2), 1999, pp. 192198
Abstract
ObjectiveTo investigate the value of Simpson's rule, Teichholz's formula,and recording of mitral ring motion in assessing left ventricular ejectionfraction (EF) in patients with left ventricular hypertrophy. DesignLeft ventricular ejection fraction calculated by Simpson's rule andby Techholt's formula and estimated by mitral ring motion was compared with values obtained by radionuclide angiography. SettingSecondary referral centre. Patients16 patients with left ventricular hypertrophy and a clinical diagnosis of hypertrophic cardiomyopathy or hypertension. ResultsCalculation by Teichholz's formula overestimated left ventricular ejection fraction by 10% (p=0.002) and estimation based on mitral ring motionthat is, long axis measurementsunderestimated ejection fraction by 19% (p = 0.002), without significant correlation between ring motion and ejection fraction. There was no significant difference between mean values of ejection fraction calculated by Simpson's rule and measured by the reference method, but a considerable scatter about the regression line with a standarderror of the estimate of 9.3 EF%. ConclusionsIn patients with left ventricular hypertrophy the ejection fraction, calculated by Teichholz's formula or Simpson's rule, is a poor measure of left ventricular function. When mitral ring motion is used for the assessment in these patients the function should be expressed in ways other than by the ejection fraction.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 16:14:18