Review Note

•{{c1::Phase 4}} is the resting membrane potential which is maintained by the Na-K-ATPase and maintains the negative membrane potential at around -90 mV.

•ECG changes for {{c2::Sodium-Potassium ATPase}} inhibitors:

        • Sinus bradycardia, premature ventricular beats, various atrio-venticular blocks (e.g. atrial flutter/fibrillation, ventricular tachycardia/fibrillation) - anything except {{c3::sinus tachycardia }}