Cardiology Case Report: Near Syncope After a Jab

Our latest cardiology case report from Brady Pregerson, MD, features a man in his 20s presenting to the emergency department complaining of body aches, chest discomfort, and light-headedness. Can you determine the correct diagnosis?


A man in his 20’s comes to the ED for body aches including chest discomfort and feeling light-headed. Symptoms started about 3 hours after his second COVID vaccine and are non-progressive at this point. He was told he needs a doctor’s note to return to work. He denies syncope, palpitations, SOB, fever, cough or other complaints.


Vital signs are normal. He is not orthostatic. Exam is normal.

An EKG is done:

What is the most likely cause of the EKG findings in this patient?