Isolated low serum Mg levels are associated with atrial depolarisation and ventricular repolarisation abnormalities, predisposing to ventricular arrhythmias
QT interval is the time from the start of the Q wave to the end of the T wave, time taken for ventricular depolarisation and repolarisation
51 yr old female who presented with chronic vomiting. She has a history of rheumatoid arthritis and paroxysmal atrial fibrillation. Her medications include sotalol and rivaroxaban.
29 yr old male presents complaining of vomiting, dizziness and felling 'vague'. Describe and interpret this ECG. LITFL Top 100 ECG
This ECG is from a 40 yr old male who presented following a large overdose of an anti-spasmodic agent.
A classic toxicological ECG demonstrating the key electrophysiological changes seen with quetiapine overdose.