ESC diagnostic criteria for dilated cardiomyopathy in relatives
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Unexplained decrease of left ventricular ejection fraction ≤ 50% but > 45%
No
Yes
Unexplained left ventricular end-diastolic dilatation diameter or volume) according to nomograms left ventricular end-diastolic diameter/volume > 2 standard deviations + 5%)
No
Yes
Complete left bundle branch block, or atrioventricular block PR > 200 ms or higher degree atrioventricular block)
No
Yes
Unexplained ventricular arrhythmia > 100 ventricular premature beats per hour in 24 hours or non-sustained ventricular tachycardia, ≥ 3 beats at a rate of ≥ 120 beats per minute)
No
Yes
Segmental wall motion abnormalities in the left ventricle in the absence of intraventricular conduction defect
No
Yes
Late enhancement of nonischemic origin on cardiac magnetic resonance imaging
No
Yes
Evidence of nonischemic myocardial abnormalities inflammation, necrosis, and/or fibrosis) on endomyocardial biopsy
No
Yes
Presence of serum organ-specific and disease-specific anti-heart antibodies by ≥ 1 autoantibody tests
No
Yes
Yes
No
Yes
No
No
Yes
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