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Fig. 2 | BMC Medical Genetics

Fig. 2

From: Rapid and effective response of the R222Q SCN5A to quinidine treatment in a patient with Purkinje-related ventricular arrhythmia and familial dilated cardiomyopathy: a case report

Fig. 2

Electrocardiograms before (a, b) and after (c) quinidine treatment. a representative 12-lead ECG before quinidine treatment (25 mm/sec., 10 mm/mV), sinus beats (*) with different RBBB pattern, supraventricular and junctional beats (^) with RBBB+ LAH pattern, LBBB-like pattern ventricular extrabeats with variable saxis. b1, 2 24-h Holter ECG rhythm strip showed single sinus (*) and supraventricular (^) extrabeats and MPVCs with narrow QRS and different axis (upper panel) and nsVT (lower panel). c 12-lead ECG (25 mm/sec., 10 mm/mV) after quinidine treatment - morphology of P differed from sinus rhythm, RBBB with right axis, without ventricular arrhythmia. RBBB – right bundle branch block, LBBB - left bundle branch block, LAH – left anterior hemiblock, MPVCs - multifocal premature ventricular contractions, nsVT - non-sustained ventricular tachycardia

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