A patient with known Wolff-Parkinson-White (WPW) syndrome develops a broad complex irregular tachycardia at 250 bpm. He is hypotensive and confused. W...

Question

A patient with known Wolff-Parkinson-White (WPW) syndrome develops a broad complex irregular tachycardia at 250 bpm. He is hypotensive and confused. What specific drug must be avoided in this situation?

Accepted Answer

AV nodal blocking agents - adenosine, verapamil, and digoxin - as they may cause fatal acceleration of ventricular rate via the accessory pathway

Answer

Lidocaine - it has no effect on accessory pathways

Answer

Magnesium sulphate - it causes paradoxical tachycardia in WPW

Answer

Amiodarone - it is contraindicated in all pre-excitation syndromes

Answer

Adrenaline - it worsens the tachycardia

uk-dipimc MCQ (SBA): WPW and Pre-Excited AF

A patient with known Wolff-Parkinson-White (WPW) syndrome develops a broad complex irregular tachycardia at 250 bpm. He is hypotensive and confused. What specific drug must be avoided in this situation?