Primary Care Baseline | EKG Interpretation Algorithms
Differential for Prolonged PR Interval

P with every QRS? YES -> 1st degree heart block

constant PR with dropped beats? YES -> 2nd degree heart block (type II)

progressive PR prolongation? YES -> 2nd degree heart block (type I, Wenckebach)

no relationship between P waves and QRS? YES -> 3rd degree heart block


Related Topics: 12-lead EKG Interpretation
Richard Rathe, MD / rrathe@dean.med.ufl.edu (November 8, 2000)