[…] a) Respiratory arrhythmia, ST-T anomalies b) Pacemaker rhythm c) Atrial fibrillation with rapid ventricular rate (180 – 200 bpm) d) Atrial fibrillation, ST-T anomalies
[af-ablation.org]
[…] asystole, and ischemic stroke. 10,11,23 It should never be performed in the presence of carotid bruits, a history of ventricular tachycardia, recent stroke, or myocardial
[ahcmedia.com]