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Table 3 CMR-Based Change in Diagnosis

From: Clinical utility of cardiovascular magnetic resonance imaging in patients with implantable cardioverter defibrillators presenting with electrical instability or worsening heart failure symptoms

Post-CMR diagnosisAll patients (n = 208)All patients Change in diagnosisPrimary prevention (n = 115)Primary prevention Change in diagnosisSecondary prevention (n = 93)Secondary prevention Change in diagnosis
Acute MI22 (1)11 (1)11 (1)
Cardiac storage disease10 (0)10 (0)00 (0)
ARVC53 (1)10 (0)43 (3)
Idiopathic DCM4313 (6)339 (8)104 (4)
HCM72 (1)31 (1)41 (1)
HHD2522 (11)1111 (10)1411 (12)
ICM638 (4)402 (2)236 (6)
NCCM11 (0.5)00 (0)11 (1)
Normal (prior LGE (+) VT ablation lesions)44 (2)11 (1)33 (3)
Normal2110 (5)54 (3)166 (6)
Post–acute myocarditis2013 (6)95 (4)118 (9)
PPCM20 (0)20 (0)00 (0)
Cardiac sarcoidosis74 (2)42 (2)32 (2)
Systemic sclerosis10 (0)00 (0)10 (0)
TOF10 (0)00 (0)10 (0)
VHD51 (0.5)41 (1)10 (0)
Total20883 (40)11537 (32)9346 (49)*
  1. Values are n (%) for all, primary and secondary prevention groups. MI myocardial infarction; ARVC arrhythmogenic right-ventricular cardiomyopathy; DCM dilative cardiomyopathy; HCM hypertrophic cardiomyopathy; HHD hypertensive heart disease; ICM ischemic cardiomyopathy; NCCM non-compaction cardiomyopathy; LGE late gadolinium enhancement; VT ventricular tachycardia; PPCM peripartum cardiomyopathy; TOF tetralogy of Fallot; VHD valvular heart disease. * p = 0.011 for the comparison of primary versus secondary prevention