EXAM #1: A-FIB AND A-FLUTTER

Question 1

What description is pathognomonic for a-fib?

Answer 1

“Irregularly irregular”

Question 2

What are the characteristics of atrial flutter?

Answer 2

1) Regular
2) Atrial rate ~300
3) F-waves give sawtooth baseline

Question 3

What is the most common presentation of Atrial Flutter?

Answer 3

2:1 AV conduction

Atrial rate= 300, 150 ventricular rate

Question 4

What do all supraventricular arrhythmias without a bundle branch block have in common?

Answer 4

Narrow QRS complex

Question 5

What is the most common arrhythmia in the US?

Answer 5

A-fib

Question 6

What are the ECG characteristics of a-fib?

Answer 6

1) “irregularly irregular”
2) f-waves result in variable baseline
3) Atrial rate is 450-600

Question 7

What is the criteria for “low voltage?”

Answer 7

QRS in the einthoven leads less than 5mm, which can be caused by:

1) Obesity
2) Pericardial effusion
3) Emphysema
4) Diffuse myocardial fibrosis

Question 8

What does a-fib complicated by pre-excitation mimic?

Answer 8

VT