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Table 2 Findings at cardiac examination of the patients with the 3243A>G mutation.

From: Cardiac abnormalities in patients with mitochondrial DNA mutation 3243A>G

  Patients (n)
ECG  
   Normal 22
   LVH 9
   Conduction disturbances 5
   Other* 9
Echocardiography  
   Normal 16
   LVH 19
   LVSD or LVDD 9
   Valvular disorders 6
Holter-recordings  
   Normal 14
   Benign extrasystoles 15
   VES >30/h 1
   SVT/AF attacks 4
   NSVT 1
   Conduction disturbances 4
  1. LVH, left ventricular hypertrophy; LVSD, left ventricular systolic dysfunction; LVDD, left ventricular diastolic dysfunction; VES, ventricular extrasystoles; SVT, supraventricular tachycardia; AF, atrial fibrillation; NSVT, non-sustained ventricular tachycardia. LVSD was diagnosed if ejection fraction < 50%. LVDD was diagnosed if E/A-ratio < 1. *Other ECG findings include: Q-wave abnormalities, 2; ST/T-wave abnormalities, 4; sinustachycardia, 2; prolonged QTc, 1.Supraventricular extrasystoles or VES <30/h. Conduction disturbances include: Mobitz II AV-block, 1; intermittent delta wave, 1; sinus arrests (2.4–2.8 s), 2.