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Titolo:
Usefulness of early diastolic flow propagation velocity measured by color M-mode Doppler technique for the assessment of left ventricular diastolic function in patients with hypertrophic cardiomyopathy
Autore:
Nishihara, K; Mikami, T; Takatsuji, H; Onozuka, H; Saito, N; Yamada, S; Urasawa, K; Kitabatake, A;
Indirizzi:
Hokkaido Univ, Sch Med, Dept Cardiovasc Med, Kita Ku, Sapporo, Hokkaido 0608638, Japan Hokkaido Univ Sapporo Hokkaido Japan 0608638 oro, Hokkaido 0608638, Japan Hokkaido Univ, Coll Med Technol, Sapporo, Hokkaido 060, Japan Hokkaido Univ Sapporo Hokkaido Japan 060 ol, Sapporo, Hokkaido 060, Japan
Titolo Testata:
JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY
fascicolo: 9, volume: 13, anno: 2000,
pagine: 801 - 808
SICI:
0894-7317(200009)13:9<801:UOEDFP>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONINVASIVE ASSESSMENT; ISOVOLUMIC RELAXATION; CARDIAC-CATHETERIZATION; FILLING PRESSURES; ECHOCARDIOGRAPHY; DYSFUNCTION; PATTERNS; ISCHEMIA; INDEXES; HUMANS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Nishihara, K Hokkaido Univ, Sch Med, Dept Cardiovasc Med, Kita Ku, Kita-15,Nishi-7, Sapporo, Hokkaido 0608638, Japan Hokkaido Univ Kita-15,Nishi-7 Sapporo Hokkaido Japan 0608638
Citazione:
K. Nishihara et al., "Usefulness of early diastolic flow propagation velocity measured by color M-mode Doppler technique for the assessment of left ventricular diastolic function in patients with hypertrophic cardiomyopathy", J AM S ECHO, 13(9), 2000, pp. 801-808

Abstract

Flow propagation velocity (FPV) of left ventricular (LV) filling flow has been shown to be a useful index for the evaluation of LV diastolic function, which is relatively independent of preload in myocardial infarction and dilated cardiomyopathy, but the usefulness of FPV for hypertrophic cardiomyopathy (HCM) has not yet been determined. In 23 HCM patients and 26 control subjects, peak transmitral flow velocities in early diastole (E) and duringatrial contraction (A), E/A ratio, deceleration time of E velocity, and isovolumic relaxation time were measured with the conventional Doppler technique, and FPV was measured from color M-mode Doppler images of LV filling flow. The time constant of LV isovolumic pressure decay (tau) was measured bya micro-manometer-tipped catheter in all HCM patients and 13 control subjects. Flow propagation velocity was significantly lower and deceleration time was significantly greater in HCM patients than in the control subjects, though no significant differences were observed in the other noninvasive indexes. Tau was significantly prolonged in HCM patients compared with that ofcontrol subjects (54 +/- 12 cm/s and 32 +/- 7 cm/s, respectively; P < .0001). while the conventional indexes did not correlate with tau among the 36 patients in whom invasive studies were performed, FPV correlated well with tau (r = -0.76, P < .0001). Flow propagation velocity is a useful noninvasive index for the assessment of LV diastolic function in patients with HCM.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 18:18:49