fig2

Figure 2. Electrocardiogram depicts a rhythm strip recorded from leads V1-V6 (10 s) without premature ventricular contractures (PVCs). The study was performed on April 14, 2009 and revealed normal sinus rhythm with the heart rate 71 beats/min. This EKG was done 7 days after a single IFN-beta-1a injection (11 µg SC). Two additional rhythm strips (10 s each) revealed no PVCs as well (not shown)