Questions with complete solution
2026/2027
Tract that depolarizes the left atria - correct answer Bachmann bundle
Pathway involved in WPW - correct answer Kent bundle
Normal P wave duration - correct answer 0.08-0.12 sec
Normal PR interval - correct answer 0.12-0.20 seconds
Normal QRS duration - correct answer < 0.1 sec
Normal QTc in men - correct answer < 0.45 sec
Normal QTc in women - correct answer < 0.47 sec
A biphasic P wave in lead II suggests - correct answer LA enlargement = think mitral stenosis
Tall P wave suggests - correct answer RA enlargement (think cor pulmonale)
Lead I is upright and AvF is down - correct answer Left axis deviation
Lead I is down and AvF is up - correct answer Right axis deviation