“…2 It can also be seen in patients with a normal QRS and has been reported in pediatric populations, 3 patients with sarcoidosis, 4 and scleroderma. 5 It is important to differentiate this cause of AV block from the more benign form of vagally mediated AV block. Lee et al review the important differences between PD-PAVB and vagally mediated AV block.…”