dict final size of myocardial infarction in correlation to
rest Tc99 sestamibi SPECT in patients with ST-segment
elevation myocardial infarction who underwent primary
coronary intervention.
Patients and Methods: The study was conducted on 30
patients with acute STEMI eligible for primary PCI. The
initial and final size of myocardial infarction was estimated
by Selvester QRS and resting Tc-99m sestamibi imaging then
myocardial salvage was calculated.
Results: The mean age was 55.27±10.74, 25 males (83.3%)
and 5 females (16.7%). There was a significant correlation
between Selvester QRS score and resting Tc-99m sestamibi
imaging (r=0.774, p=0.001) for initial size, (r=0.659, p=0.001)
for final size and (r=0.886, p=0.001) for myocardial salvage.
Significant correlation was found in anterior MI patients
(r=0.674, p=0.002) for initial size, (r=0.546, p=0.016) for
final size and (r=0.936, p=0.001) for myocardial salvage. The
correlation was significant in patients with post procedural
TIMI 3 flow, it was (r=0.817, p=0.001) for initial size (r=0.678,
p=0.001) for final size and r=0.939, p=0.001) for myocardial
salvage. Also significant correlation in single vessel ( r=0.955,
p=0.001) for initial, (r=0.927, p=0.001) for final size and
(r=0.989, p=0.001) for myocardial salvage. Time of reperfusion
didn't affect the correlation as it was significant when reperfusion was 6hours.
Conclusion: Selvester QRS score is simple, bedside, easy
and cheap tool that correlate well with resting TC99 sestamibi
SPECT for estimation the infarction size especially in patients
with anterior MI, single vessel and with post procedure TIMI
flow 3.