Thursday, August 22, 2013

Tonic Water

Challenge: What antiarrhythmic causes this arrhythmia? Side effects include nausea, diarrhea, abdominal pain, tinnitus, hearing loss, confusion, delirium, vision changes, and psychosis.


sibogox said...

is the EKG showing mobitz type II abnormality? is it lidocaine then?

Craig Chen said...

not the greatest EKG. lido is a good guess, but i was going for quinidine
Tonic Water

This is quinidine effect; the ECG shows sinus rhythm with an intraventricular conduction delay (QRS 0.12 seconds) and a mildly prolonged QT-(U) interval.

Sources: ECG Wave Maven; UpToDate.