Coronary Vasospasm While Treating Supraventricular Tachycardia: Is Adenosine Really to Blame?

Figure 2

Continuous ECG recording depicts the response to the second dose of adenosine (12 mg). After the initial delayed conduction in the atrioventricular node and sinus node, sinus pause arose. Sinus rhythm then resumed and ST-segment elevation in leads II, III, and aVF with ST-segment depression in leads I, aVL, and V1-V3 are seen.