[A case of stunned myocardium: dual SPECT findings similar to acute myocardial infarction (AMI)].
Emergent cardiac catheterization was performed on a 70-year-old female patient who was admitted for further evaluation of acute myocardial infarction. Coronary angiography didn't reveal any significant stenotic lesion, but levogram showed extensively abnormal contractility around the center of the apex region. On the second hospital day, 99mTc-PYP/201TlCl dual SPECT gave findings similar to those found in acute myocardial infarction, but myocardium--released enzyme stayed within the normal range. Two weeks after, 201TlCl myocardial scintigraphy showed disappearance of the perfusion defect, and normal contractility was observed on the levogram of the chronic phase. Since this case was clinically denied to be myocardial infarction, it was considered a typical case of stunned myocardium which showed prolonged left ventricular abnormal contractility with transient myocardial ischemia. This is a case suggestive for estimations of myocardial reversibility in patients with myocardial perfusion and metabolic disorder in dual SPECT.
Itho
K
K
Second Department of Medicine, Kyoto Prefectural University of Medicine.
Kohno
Y
Y
Sudo
Y
Y
Azuma
A
A
Sugihara
H
H
Asayama
J
J
Katsume
H
H
Nakagawa
M
M
D000368:Aged; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006801:Humans; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000000981:diagnostic imaging*; D015428:Myocardial Reperfusion Injury / Q000000981:diagnostic imaging* / Q000503:physiopathology; D016698:Technetium Tc 99m Pyrophosphate; D013794:Thallium Radioisotopes; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods
D013794:Thallium Radioisotopes; D016698:Technetium Tc 99m Pyrophosphate