[Effect of restoration of coronary blood flow on dynamics of myocardial perfusion and function in patients with acute myocardial infarction. Data of gated technetium-99m-sestamibi SPECT].
Effects of coronary blood flow restoration on dynamics of myocardial perfusion and function were studied in 50 patients with acute myocardial infarction during 6-month follow-up. Gated SPECT with 99mTc-MIBI (G-SPECT) was performed before onset of reperfusion procedures, in 24 hours, 10 days, 1 and 6 months. In patients with successful reperfusion (n=36) perfusion defect (PD) size decreased by 6.78+/-0.97% (p<0.001) and its severity by 221.3+/-85 std (p<0.001) in 24 hours. In 10 days PD size decreased by 3.9+/-0.88% (r<0.05) and severity by 149+/-39 std (p<0.05), whereas in 1 month PD size decreased by 2,18+/-1,4% (p<0.05), PD severity by 146.3+/-67 std (p<0.05). Successful reperfusion was associated with improvement of contractility: left ventricular ejection fraction increased by 3% (p<0.05) on day 10 of the disease. In patients with failed reperfusion PD size and severity decreased in 10 days by 4.8+/-4.2%, p<0.05, and 276+/-75 std, p<0.05, respectively, in 6 months PD size decreased by 3.1+/-0.9%, p<0.05, left ventricular ejection fraction did not change during follow-up. We conclude that successful reperfusion therapy promotes restoration of myocardial perfusion and improvement of its contractility.
Egorova
T V
TV
Khodareva
E N
EN
Ruda
M Ia
MIa
Sergienko
V B
VB
D015906:Angioplasty, Balloon, Coronary; D002302:Cardiac Output; D003326:Coronary Circulation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008955:Models, Cardiovascular; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000628:therapy*; D015425:Myocardial Reperfusion; D019275:Radiopharmaceuticals; D013318:Stroke Volume; D017256:Technetium Tc 99m Sestamibi; D015912:Thrombolytic Therapy; D013997:Time Factors; D015899:Tomography, Emission-Computed, Single-Photon
D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi