Heart Block

Question 1

What is the definition of a prolonged PR interval?

Answer 1

> 2 ms

Question 2

How many big boxes and seconds are the range of the PR interval?

Answer 2

3-5 boxes, 0.12-0.2s

Question 3

What is 1st degree heart block?

Answer 3

Prolonged PR interval

Question 4

What heart block is Wenkebach?

Answer 4

2nd degree mobitz type 1

Question 5

Describe 2nd degree type 1

Answer 5

Increasing PR interval, eventually a dropped QRS complex.

Question 6

Describe 2nd degree type 2

Answer 6

PR interval is fixed, dropped QRS complexes

Question 7

Describe 3rd degree heart block

Answer 7

No relationship between p-wave and QRS complexes

Question 8

Where is the issue in 1st degree?

Answer 8

Between SA node and the AV node (in atrium)

Question 9

Where is the issue in 2nd degree, type 1?

Answer 9

In the AV node

Question 10

Where is the issue in 2nd degree type 2?

Answer 10

After the AV node, in the bundle of his or purkinje fibres

Question 11

Where is the issue with 3rd degree heart block?

Answer 11

Anywhere after the AV node

Question 12

What accompanies a delta wave in Wolf-Pakinson-White syndrome?

Answer 12

Shortened PR interval

Question 13

What does a shortened PR interval signify?

Answer 13

Electrical impulse is getting to the AV node via a faster route or is originating from a location closer than expected to the AV node