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Revista argentina de cardiología

On-line version ISSN 1850-3748


DEVIGGIANO, Alejandro et al. Cardiac Magnetic Resonance Imaging for Evaluation of Non-Compaction Cardiomyopathy in Patients with or without Left Ventricular Systolic Dysfunction. Rev. argent. cardiol. [online]. 2011, vol.79, n.3, pp.218-225. ISSN 1850-3748.

Background Non-compaction cardiomyopathy (NCC) is a genetic disorder characterized by deep trabeculations in the ventricular wall, which define recesses communicating with the main ventricular chamber. The prevalence of NCC is greater in symptomatic populations with left ventricular dysfunction; yet, it may also be detected in asymptomatic patients with normal left ventricular function using novel diagnostic tools. However, this condition is under-diagnosed due to a low index of clinical suspicion and to the use of echocardiography classifications based on different diagnostic criteria. The use of cardiac magnetic resonance imaging (CMRI) has established two diagnostic criteria that clearly recognize this disease. Objective To evaluate the clinical and morphological characteristics of patients with NCC with and without systolic dysfunction undergoing cardiac magnetic resonance imaging (CMRI). Material and Methods A total of 20 patients with NCC were retrospectively included. The following parameters were determined: left ventricular end-diastolic volume (LVEDV), left ventricular end-systolic volume (LVESV); left ventricular end-diastolic diameter (LVEDD); left ventricular end-systolic diameter (LVESD); cardiac mass and left ventricular trabeculations. The distribution of NC myocardium was evaluated according to the model of 17 myocardial segments. Results Mean myocardial thickness was 13.1±3.3 mm and 3.6±0.6 mm in NC versus normal myocardium, respectively. Patients with left ventricular dysfunction presented increased LVEDD, LVEDV, total cardiac mass, and LV non-compaction and trabeculations. We found a positive correlation and a linear relationship between LVEDD and TLVM (g/m2): r=0.76; r²=0.59; p<0.001. Conclusions We found that NCC can present either as a subtle condition with normal systolic function or as a dilated cardiomyopathy associated with ventricular dysfunction.

Keywords : Non-compaction Cardiomyopathy; Cardiac Magnetic; Resonance Imaging; Trabeculations; Cardiomyopathies; Echocardiography.

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