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• W2151874504 abstract "<h2>Abstract</h2><h3>Background</h3> The abnormalities in dilated cardiomyopathy (DCM) are generally considered diffuse and to affect the left ventricle in a global manner. However, regional wall motion abnormalities and metabolic defects may also occur to varying, but unclear degrees. QRS width and metabolic defects on positron emission tomography (PET) correlate with survival. We sought to ascertain the prevalence of regional defects in DCM by multiple imaging modalities and to establish the relationship between QRS width and these defects. <h3>Methods</h3> In consecutive patients with advanced nonischemic DCM, undergoing cardiac transplant evaluation, we reviewed multiple imaging modalities (PET, 2-dimensional echocardiography, and radionuclide ventriculography) to quantify the incidence of regional metabolic and wall motion abnormalities and correlate them with clinical and electrocardiographic parameters. <h3>Results</h3> Of 44 patients studied, PET imaging revealed scar in 91% of patients, with a mean of 25 ± 18% of the left ventricle involved, predominantly in the distribution of the left anterior descending artery. Regional wall motion abnormalities occurred in 51% of patients who underwent echocardiography and 59% of patients who underwent nuclear scintigraphy (with only 70% concordance). QRS duration on the surface electrocardiogram correlated positively with the degree of scarring (<i>r</i>=.52, <i>P</i>=.0007). <h3>Conclusions</h3> The presence of scar (matched perfusion and metabolic defects) on PET scanning in patients with advanced DCM is not always indicative of coronary disease. Thus coronary angiography is usually required to define the etiology of systolic dysfunction. The extent of scar correlates with QRS duration. This may have implications for the application of cardiac resynchronization therapy." @default.
• W2151874504 created "2016-06-24" @default.
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• W2151874504 date "2004-06-01" @default.
• W2151874504 modified "2023-09-24" @default.
• W2151874504 title "PET abnormalities in patients with nonischemic cardiomyopathy" @default.
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• W2151874504 doi "https://doi.org/10.1016/j.cardfail.2003.09.007" @default.
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