TY - JOUR
T1 - Ischemia and atherosclerotic coronary artery disease in patients with hypertrophic cardiomyopathy
T2 - A review of incidence, pathophysiological mechanisms, clinical implications and management strategies
AU - Harjai, Kishore J.
AU - Cheirif, Jorge
AU - Murgo, Joseph P.
PY - 1996
Y1 - 1996
N2 - Ischemia is suspected to occur frequently in patients with HCM and may result from various mechanisms, for example decreased coronary flow reserve, disease of small intramuscular arteries, 'inadequate' size of coronary arteries relative to hypertrophied myocardium, diminution of coronary flow during systole, compression of septal perforator arteries during systole, coronary artery spasm, and co-existent atherosclerotic CAD, which can be present in up to a quarter of HCM patients above 45 years of age. The diagnosis of CAD in patients with HCM is difficult to make on clinical grounds, secondary to the high frequency of angina in patients with HCM without CAD. Pharmacological stress echocardiography is promising but needs to be further studied; stress thallium imaging is beset with frequency false positive results. At this time, coronary angiography remains the only reliable test for the definitive diagnosis of co-existent CAD in HCM. Beta- blockers and verapamil may help in relieving symptoms and silent ischemia in patients with HCM; in those with coexistent CAD and resistant symptoms, CABG alone or in combination with left ventricular myectomy or mitral valve replacement has been recommended.
AB - Ischemia is suspected to occur frequently in patients with HCM and may result from various mechanisms, for example decreased coronary flow reserve, disease of small intramuscular arteries, 'inadequate' size of coronary arteries relative to hypertrophied myocardium, diminution of coronary flow during systole, compression of septal perforator arteries during systole, coronary artery spasm, and co-existent atherosclerotic CAD, which can be present in up to a quarter of HCM patients above 45 years of age. The diagnosis of CAD in patients with HCM is difficult to make on clinical grounds, secondary to the high frequency of angina in patients with HCM without CAD. Pharmacological stress echocardiography is promising but needs to be further studied; stress thallium imaging is beset with frequency false positive results. At this time, coronary angiography remains the only reliable test for the definitive diagnosis of co-existent CAD in HCM. Beta- blockers and verapamil may help in relieving symptoms and silent ischemia in patients with HCM; in those with coexistent CAD and resistant symptoms, CABG alone or in combination with left ventricular myectomy or mitral valve replacement has been recommended.
KW - atherosclerotic coronary artery disease
KW - hypertrophic cardiomyopathy
KW - ischemia
UR - http://www.scopus.com/inward/record.url?scp=0029906459&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029906459&partnerID=8YFLogxK
M3 - Review article
C2 - 8827402
AN - SCOPUS:0029906459
SN - 0954-6928
VL - 7
SP - 183
EP - 187
JO - Coronary Artery Disease
JF - Coronary Artery Disease
IS - 3
ER -