Refractory coronary vasospasm complicated by complete atrio-ventricular block during neck surgery: is there an indication for pacing?

ABSTRACT

Vasospastic angina is a clinical condition characterized by coronary artery spasm in angiographically normal coronary arteries. Vasospastic angina can often lead to ventricular arrhythmias, sudden cardiac death, or life-threatening bradyarrhythmias, such as high-degree atrioventricular block or asystole. We present the unusual case of a woman with depressive syndrome who underwent emergency surgery for hemostasis of a neck lesion that caused hemorrhagic shock after a suicide attempt. During surgery, the electrocardiogram revealed inferior and posterior ST-segment elevation, total atrioventricular block and torsades de pointes; the patient also suffered 4 minutes of cardiac arrest. A temporary pacemaker was placed. Coronary angiography showed right coronary artery vasospasm. Following a second similar episode after tracheostomy, a permanent pacemaker was implanted. The indication for definitive electrostimulation in such a context and the stimulation mechanisms of the carotid sinus underlying vasospasm constitute the interesting points of this clinical case. LEARNING OBJECTIVE: The indication for definitive electrostimulation in a context of recurrent episodes of high-degree atrioventricular block during vasospastic angina and the stimulation mechanisms of the carotid sinus underlying vasospasm constitute the interesting points of this clinical case.