ECG interpretation MCQ

ALS for Pacific Family Medicine pre-course test.

This is an open book exam, and candidates may refer to the Youtube videos, ALS handbook, or other resources. However, candidates may not ask other candidates for their answers - this is cheating!

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* 1. Please enter your name in the text box ...

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* 2. If there were 3 large squares in an R-R interval, what would the heart rate be?

60 bpm

75 bpm

90 bpm

100 bpm

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* 3. The absence of P waves and an irregular rhythm with narrow QRS complexes would suggest the diagnosis of ? ...

Ventricular fibrillation

Atrial fibrillation

2nd degree heart block

1st degree heart block

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* 4. What would it suggest if Lead 1 was negative, and aVF was positive ?

Right axis deviation

Left axis deviation

Normal cardiac axis

Extreme cardiac axis

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* 5. What is the duration of a normal P-R interval ?

0.04 - 0.08 seconds (1-2 small squares)

0.04 - 0.12 seconds (1-3 small squares)

0.08 - 0.12 seconds (2-3 small squares)

0.12 - 0.2 seconds (3-5 small squares)

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* 6. The most likely cause of a patient with a history of recurrent palpitations and noted to have an abnormally short P-R interval is ? ...

Mobitz 1 second degree heart block

Mobitz 2 second degree heart block

Wolf Parkinson White syndrome

Sinus arrhythmia

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* 7. A normal QRS width is up to ...

0.08 seconds (2 small squares)

0.12 seconds (3 small squares)

0.16 seconds (4 small squares)

0.2 seconds (5 small squares)

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* 8. What is the earliest ECG change seen in myocardial infarction ?

ST depression

Tall peaked T waves

ST elevation

Tall peaked P waves

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* 9. ST elevation in leads 2, 3 and aVF suggests ? ...

Anterior myocardial infarction

Inferior myocardial infarction

Septal myocardial infarction

Posterior myocardial infarction

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* 10. The QT interval is ? ...

From the end of the QRS complex to the start of the T wave.

From the end of the QRS complex to the end of the T wave.

From the start of the QRS complex to the start of the T wave.

From the start of the QRS complex to the end of the T wave.