1. The heart block rhythm that most closely resembles a normal sinus rhythm is: a. Third-degree heart block b. Second-degree, Mobitz type I c. First-degree heart block d. Atrioventricular dissociation...

1. The heart block rhythm that most closely resembles a normal sinus rhythm is:

a. Third-degree heart block

b. Second-degree, Mobitz type I

c. First-degree heart block

d. Atrioventricular dissociation

2. It is important to note that the PR interval in Mobitz type II is constant, or regular, for every conducted beat.

a. True b. False