heart block

Question 1

first degree heart block

Answer 1

PR interval > 0.2 s
asymptomatic- common, don’t need to treat

Question 2

second degree heart block

Answer 2

type 1: progressive prolongation of PR interval until dropped beats
type 2: PR interval is constant but the P eave is often not followed by QRS

Question 3

third degree heart block

Answer 3

no association between P waves and QRS

Question 4

management of Mobitz type II

Answer 4

pacemaker