Echocardiographic Assessment of Right Ventricular Function by Tissue Doppler and Myocardial Perfusion in Inferior Wall Myocardial Infrac tion and Its Correlation with Proximal Right Coronary Artery Stenosis
Keywords:
(RVMI) Right ventricular infraction, (TDI) Tissue Doppler Imaging, (MPI) Myocardial perfusion imagingAbstract
Introduction: Right ventricular (RV) function has not been widely studied after a myocardial infarction (MI) unlike LV func
tion. There is RV (Right Ventricular) involvement in more than 1/3rd of patients with acute IWMI. RV involvement has been
reported to be an independent predictor of major complications and in-hospital mortality after acute inferior MI. Tissue Dop
pler indices like MPI (Myocardial Perfusion Index) have proven role in assessing global RV function. Our study is an attempt to
assess various parameters of RV function within 24 h of presentation in first episode of acute inferior wall MI and to correlate
them with a proximal RCA lesion in coronary angiogram.
Materials and Methods: 50 patients with acute inferior wall MI and Right ventricular infraction (RVMI) with presenting with
in first 24 hours of symptom onset who underwent either primary PCI or elective PCI within one month. All patients under
went transthoracic echocardiography to assess RV function Tissue Doppler Imaging (TDI) and myocardial perfusion imaging
(MPI) and coronary angiography. TDI and MPI values are very much abnormal in patients with RVMI and Proximal RCA (Right
coronary artery) involvement when compared to those without RVMI or any Proximal RCA involvement.
Conclusion: The present study showed that TDI and MPI values of patients presenting with RVMI and proximal RCA stenosis
are far moreless compared to those without RVMI
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