ECGs

Question 1

The absence of P-waves and an irregular rhythm would suggest a diagnosis of…..

Answer 1

Atrial fibrillation

Question 2

Which condition causes sawtoothing on ECG?

Answer 2

Atrial flutter

Question 3

If ST-elevation was seen in leads II, III & aVF what would it suggest?

Answer 3

Inferior myocardial infarction

Question 4

If a patient had an abnormally short PR-interval what would be a likely cause?

Answer 4

Wolf parkinson white syndrome

Question 5

How can you calculate the heart rate from an ECG?

Answer 5

300/number of large squares in RR interval

Question 6

What is the duration of a normal PR interval?

Answer 6

0.12-0.2 seconds (3-5 small squares)

Question 7

What view of the heart do leads I, aVL, V5, V6 represent?

Answer 7

Lateral

Question 8

What view of the heart do leads V1 & V2 represent?

Answer 8

Septal

Question 9

What is the normal duration of a QRS complex?

Answer 9

0.12 seconds (3 small squares)

Question 10

What does ST-depression classically suggest?

Answer 10

Myocardial ischemia

Question 11

Which artery is most likely to be affected if ST elevation in seen in leads V3 & V4?

Answer 11

Left anterior descending coronary artery

Question 12

What view of the heart do leads V3 & V4 represent?

Answer 12

anterior