Usefulness of real-time three-dimensional echocardiography for evaluation of myectomy in patients with hypertrophic cardiomyopathy.
Real-time 3-dimensional echocardiography was performed in 10 patients with obstructive hypertrophic cardiomyopathy (HC) before and after myectomy and in 6 controls. The exact location of systolic anterior motion of the mitral leaflet was shown in all patients with HC with a predominant involvement of the medial portion in 4 patients and the middle portion in 6 patients. The smallest area of the left ventricular outflow tract was significantly smaller in patients with HC than in controls (1.4 +/- 0.7 vs 5.1 +/- 1.2 cm(2), p <0.01), significantly increased after myectomy (4.8 +/- 1.8 cm2, p <0.01) and was associated with a reduction of the pressure gradient at rest from 63 +/- 41 to 15 +/- 5 mm Hg (p <0.01).
Qin
Jian Xin
JX
Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA.
Shiota
Takahiro
T
Asher
Craig R
CR
Smedira
Nicholas G
NG
Shin
Joon-Han
JH
Agler
Deborah A
DA
Nash
Patrick J
PJ
Greenberg
Neil L
NL
Lever
Harry M
HM
Lytle
Bruce W
BW
Thomas
James D
JD
D000328:Adult; D001011:Aorta / Q000000981:diagnostic imaging / Q000503:physiopathology; D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures; D002312:Cardiomyopathy, Hypertrophic / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery*; D003199:Computer Systems; D004452:Echocardiography; D015150:Echocardiography, Doppler; D019560:Echocardiography, Three-Dimensional; D005260:Female; D006346:Heart Septum / Q000000981:diagnostic imaging / Q000503:physiopathology; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D013599:Systole / Q000502:physiology; D016896:Treatment Outcome; D014694:Ventricular Outflow Obstruction / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery