Atrioventricular block after COVID-19: What is the mechanism, site of block, and treatment?

A 49-year-old healthy woman presented with exertional shortness of breath and palpitations of 3 months ’ duration. Baseline electrocardiogram (ECG) was normal. Figure 1 shows selected tracings recorded during treadmill stress testing. Transthoracic echocardiogram showed no structural abnormalities. Cardiac positron emission tomogram showed normal myocardial perfusion and no abnormal fluorodeoxyglu cose uptake. Antibody titers for Lyme disease were undetectable. Figure 2 shows selected tracings from an invasive electrophysiological (EP) study.
Source: Heart Rhythm - Category: Cardiology Authors: Tags: Scheinman/Peter ECG Corner Source Type: research