Hibernating myocardium associated with coronary artery dissection and vasospastic angina.
Hibernating myocardium is an uncommon clinical state involving persistently impaired myocardial function. A 61-year-old man was admitted because of vasospastic angina. Coronary angiography revealed coronary artery dissection in the midportion of the right coronary artery, and segmental vasoconstriction was evoked by acetylcholine. In this patient, hibernating myocardium in the dissected region was clearly demonstrated by dipyridamole thallium-201 imaging. This report describes the first documented case of hibernating myocardium associated with coronary artery dissection, and the usefulness of dipyridamole thallium-201 imaging in the assessment of this state. Coronary artery spasm might be relevant to the etiology of coronary artery dissection.
Adachi
S
S
Department of Medicine, Hokushin General Hospital, Nagano, Japan.
Hiroe
M
M
Amano
J
J
Shirai
T
T
Sugimoto
K
K
Miyahara
Y
Y
Marumo
F
F
D000784:Aortic Dissection / Q000150:complications* / Q000000981:diagnostic imaging; D000787:Angina Pectoris / Q000209:etiology*; D017023:Coronary Angiography; D003329:Coronary Vasospasm / Q000150:complications*; D004176:Dipyridamole; D006322:Heart Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D015428:Myocardial Reperfusion Injury / Q000150:complications*; D013794:Thallium Radioisotopes; D014057:Tomography, X-Ray Computed
D013794:Thallium Radioisotopes; D004176:Dipyridamole