PR interval pathologies

Question 1

1st degree heart block

Answer 1

Increased PR interval of over 5 little squares

Question 2

2nd degree Wenkebach

Answer 2

PR interval increases until one is missed

No sinus rhythm

Question 3

2nd degree Hay

Answer 3

Constant PR interval but a ratio of P to QRS complexes

Question 4

3rd degree - complete heart block

Answer 4

AV dissociation

Constant rhythm but going at different times

Question 5

Wolf Parkinson White

Answer 5

Short PR and delta wave

Due to accesory pathway