The first report of 2:1 atrioventricular block following COVID‐19 vaccination

A 65‐year‐old man became ill a few days after being vaccinated against the COVID‐19 by the Sinopharm vaccine. Laboratory investigations, trans‐thoracic echocardiography, and chest computed tomography scanning (CT‐scan) retrieved normal results. The patient's electrocardiogram showed sinus rhythms with 2:1 AV‐block and a narrow QRS complex. Coronary angiography showed mild coronary artery disease. The COVID‐19 pandemic has urged the scientific community to focus on developing of vaccines, and the potential side effects on the cardiovascular system are unknown. Here, we reported a second‐degree AV block in a man receiving a COVID‐19 vaccine.