Atrial tachycardia occurs when a focus in the atrium outside the AV node fires rapidly causing increased ventricular heart rates. When conducting in a 2:1 ratio like on this ECG, digoxin toxicity ...

Explaination: As previously stated, digoxin toxicity itself results in hyperkalemia, however hypokalemia significantly increases the risk for serious arrhythmias in the digoxin toxic patient. Digoxin ...