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Endomyocardial radial strain rate imaging during dobutamine stress echocardiography for the evaluation of contractile reserve in patients with dilated cardiomyopathy. 2016

Makoto Minoshima, and Akiko Noda, and Masakazu Kobayashi, and Seiko Miyata, and Akihiro Hirashiki, and Takahiro Okumura, and Hideo Izawa, and Hideki Ishii, and Takahisa Kondo, and Toyoaki Murohara
Department of Pathophysiology Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.

OBJECTIVE Myocardial contractile reserve is associated with clinical prognosis in patients with dilated cardiomyopathy (DCM). We assessed myocardial contractile reserve using tissue Doppler strain rate imaging with dobutamine stress echocardiography in DCM patients. METHODS Simultaneous echocardiography and left ventricular (LV) catheterization during dobutamine stress were performed in 20 patients with DCM, and echocardiography was performed in 31 control subjects. Dobutamine was infused at a starting dose of 5 μg/kg/min for 5 minutes and then at 10 μg/kg/min. Peak endomyocardial radial strain (ɛ) and systolic strain rate (SRsys ) measured with echocardiography and the maximum first derivative of LV pressure (LV dP/dtmax ) derived from catheterization were used as indices of contractility. Their percentage change from baseline to the dose of 10 μg/kg/min was calculated. RESULTS The ɛ and SRsys were significantly smaller in DCM patients than in controls. The LV dP/dtmax , ɛ, and SRsys were significantly higher at the dose of 10 μg/kg/min than at baseline. The percentage change in SRsys was significantly correlated with the percentage change in LV dP/dtmax . CONCLUSIONS Strain rate imaging during dobutamine stress in DCM might prove noninvasively informative for the evaluation of myocardial contractile reserve and provide insight into LV systolic dysfunction. © 2016 Wiley Periodicals, Inc. J Clin Ultrasound 44:555-560, 2016.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009200 Myocardial Contraction Contractile activity of the MYOCARDIUM. Heart Contractility,Inotropism, Cardiac,Cardiac Inotropism,Cardiac Inotropisms,Contractilities, Heart,Contractility, Heart,Contraction, Myocardial,Contractions, Myocardial,Heart Contractilities,Inotropisms, Cardiac,Myocardial Contractions
D002311 Cardiomyopathy, Dilated A form of CARDIAC MUSCLE disease that is characterized by ventricular dilation, VENTRICULAR DYSFUNCTION, and HEART FAILURE. Risk factors include SMOKING; ALCOHOL DRINKING; HYPERTENSION; INFECTION; PREGNANCY; and mutations in the LMNA gene encoding LAMIN TYPE A, a NUCLEAR LAMINA protein. Cardiomyopathy, Congestive,Congestive Cardiomyopathy,Dilated Cardiomyopathy,Cardiomyopathy, Dilated, 1a,Cardiomyopathy, Dilated, Autosomal Recessive,Cardiomyopathy, Dilated, CMD1A,Cardiomyopathy, Dilated, LMNA,Cardiomyopathy, Dilated, With Conduction Defect 1,Cardiomyopathy, Dilated, with Conduction Deffect1,Cardiomyopathy, Familial Idiopathic,Cardiomyopathy, Idiopathic Dilated,Cardiomyopathies, Congestive,Cardiomyopathies, Dilated,Cardiomyopathies, Familial Idiopathic,Cardiomyopathies, Idiopathic Dilated,Congestive Cardiomyopathies,Dilated Cardiomyopathies,Dilated Cardiomyopathies, Idiopathic,Dilated Cardiomyopathy, Idiopathic,Familial Idiopathic Cardiomyopathies,Familial Idiopathic Cardiomyopathy,Idiopathic Cardiomyopathies, Familial,Idiopathic Cardiomyopathy, Familial,Idiopathic Dilated Cardiomyopathies,Idiopathic Dilated Cardiomyopathy
D004280 Dobutamine A catecholamine derivative with specificity for BETA-1 ADRENERGIC RECEPTORS. It is commonly used as a cardiotonic agent after CARDIAC SURGERY and during DOBUTAMINE STRESS ECHOCARDIOGRAPHY. Dobucor,Dobuject,Dobutamin Fresenius,Dobutamin Hexal,Dobutamin Solvay,Dobutamin-ratiopharm,Dobutamina Inibsa,Dobutamina Rovi,Dobutamine (+)-Isomer,Dobutamine Hydrobromide,Dobutamine Hydrochloride,Dobutamine Lactobionate,Dobutamine Phosphate (1:1) Salt, (-)-Isomer,Dobutamine Tartrate,Dobutamine Tartrate (1:1), (R-(R*,R*))-Isomer,Dobutamine Tartrate (1:1), (S-(R*,R*))-Isomer,Dobutamine, (-)-Isomer,Dobutamine, Phosphate (1:1) Salt (+)-Isomer,Dobutrex,Lilly 81929,Oxiken,Posiject,Dobutamin ratiopharm,Hydrobromide, Dobutamine,Hydrochloride, Dobutamine,Lactobionate, Dobutamine,Tartrate, Dobutamine
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015150 Echocardiography, Doppler Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells. Doppler Echocardiography,Echocardiography, Continuous Doppler,Echocardiography, Two-Dimensional Doppler,2-D Doppler Echocardiography,2D Doppler Echocardiography,Continuous Doppler Echocardiography,Doppler Echocardiography, 2-D,Doppler Echocardiography, 2D,Doppler Echocardiography, Continuous,Doppler Echocardiography, Two-Dimensional,Echocardiography, 2-D Doppler,Echocardiography, 2D Doppler,Two-Dimensional Doppler Echocardiography,2 D Doppler Echocardiography,Doppler Echocardiography, 2 D,Doppler Echocardiography, Two Dimensional,Echocardiography, 2 D Doppler,Echocardiography, Two Dimensional Doppler,Two Dimensional Doppler Echocardiography
D025401 Echocardiography, Stress A method of recording heart motion and internal structures by combining ultrasonic imaging with exercise testing (EXERCISE TEST) or pharmacologic stress. Dobutamine Stress Echocardiography,Echocardiography, Stress, Dobutamine,Stress Echocardiography,Dobutamine Stress Echocardiographies,Echocardiographies, Dobutamine Stress,Echocardiographies, Stress,Echocardiography, Dobutamine Stress,Stress Echocardiographies,Stress Echocardiographies, Dobutamine,Stress Echocardiography, Dobutamine

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