ECGs

Question 1

What would prominent inferior q waves in II, III and AVF mean? [1]

Answer 1

Previous infarct / old MI

Question 2

Describe how you’d report complete heart block

Answer 2

Calculate p wave rate
Calculate QRS rate

Question 3

Answer 3

Digoxin causes a characteristic downward sloping (or “sagging”) ST-segment depression on an ECG, often referred to as the “reverse tick” or “Salvador Dali’s moustache” sign. This effect, stemming from altered repolarization, is most prominent in leads with high R waves (V5–V6, I, aVL) and indicates digoxin effect, not necessarily toxicity.

Question 4

What ECG changes would indicate myocarditis [3]

Answer 4

tachycardia
Prolonged QRS
QT prolongation
Diffuse T wave inversion
Can trigger arrhythmias