Puff selm
Puff selm. Cardiac Disorders Arrhythmias including atrial fibrillation, extrasystoles, supraventricular tachycardia , ventricular tachycardia. In addition, beta-agonists have been reported to produce electrocardiogram ECG changes, such as flattening of the T wave, prolongation of the QTc interval, and ST segment depression.