The systolic murmur in hypertrophic obstructive cardiomyopathy and the nature of the obstruction.

Festschrift for Sir John McMichael The systolic murmur in hypertrophic obstructive cardiomyopathy and the nature of the obstruction

McMichael The systolic murmur in hypertrophic obstructive cardiomyopathy and the nature of the obstruction

Increased intensity of the murmur of hypertrophic obstructive cardiomyopathy with carotid sinus pressure.

In a prospective study murmurs increased in intensity with carotid sinus pressure in 18 of 26 patients with hypertrophic obstructive cardiomyopathy (HOCM) (sensitivity, 69.2 percent for the 26 patients, 85.7 percent for the 21 patients in whom heart rate and blood pressure decreased with carotid sinus pressure). On the other hand, the murmur remained constant or decreased in all but one of 104 ...

Transient apical ballooning in hypertrophic obstructive cardiomyopathy.

A 79-year-old white woman with known hypertrophic obstructive cardiomyopathy (HOCM) presented with sudden-onset chest pain and no identifiable stressor. Examination suggested a new apical 3/6 systolic murmur and pulmonary edema. A 12-lead electrocardiogram showed anterolateral wall ischemia. The patient’s peak troponin T level was 2.5 ng/mL. Echocardiography revealed a basal hypertrophied septu...

Systolic Anterior Motion of Mitral Valve Subchordal Apparatus: A Rare Echocardiographic Pattern in Non-Obstructive Hypertrophic Cardiomyopathy

Systolic anterior motion (SAM) of the mitral valve or chordate is one characteristic seen in hypertrophic cardiomyopathy (HCM) either in obstructive or non-obstructive phenotypes. More often than not, the obstruction is caused by valvular rather than chordal SAM. We describe the role of echocardiography in identifying the actual anatomical location of the mitral valve apparatus involved in SAM ...