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Dwivedi G, Janardhanan R, Hayat SA, Swinburn JM, Senior R.
This study examined 95 patients who underwent low-power MCE following acute MI (87% thrombolysed for STEMI) and they were then followed up for 46±16 months. The extent of residual myocardial viability by MCE independently predicted hard end-points of cardiac death and repeat MI.
Reference: J Am Coll Cardiol (2007); 50; 327-34
Janardhanan R, Moon JC, Pennell DJ, Senior R.
MCE and cardiac MRI (CMR) were performed in 42 patients 7-10 days after thrombolysis for STEMI. MCE was used to correlate perfusion with transmural extent of infarction (TEI) as defined by gadolinium-CMR. Contractile reserve was assessed with low-dose dobutamine 12 weeks following revascularization. Qualitative and quantitative MCE significantly inversely correlated with TEI and degree of contractile reserve. The study proved that MCE can refelct the transmurality of acute MI and, like CMR, predict the presence or absence of contractile reserve.
Reference: Am Heart J 2005;149(2):355-62
Shimoni S, Frangogiannis NG, Aggeli CJ, Shan K, Verani MS, Quinones MA, et al.
Patients with ischaemic cardiomyopathy underwent MCE (n=20), dobutamine echocardiography (n=18) and thallium scintigraphy (n=16) 1-5 days prior to planned CABG surgery. Repeat echocardiography was performed at 3-4months. Quantitative MCE parameters were significantly different between dysfunctional segments that recovered function (hibernating) versus those which remained dysfunctional. MCE had similar senstitity to thallium scanning and superior specificity for predicting functional recovery on a segmental level.
Reference: Circulation 2003;107(4):538-44
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