If so, the QRS complexes and the flutter waves would maintain a fixed relationship. ... This tracing is an example of muscle tremors simulating either atrial flutter or ventricular tachycardia. 1 2.

Ventricular tachycardia, ventricular fibrillation or ventricular flutter occurred in 9 patients receiving carvedilol (0.9%) and 38 patients receiving placebo (3.9%), respectively (P <0.0001).