ECG Quest > Diagnoses > Electrolytes > Hypomagnesaemia


Hypomagnesaemia (low serum magnesium) can cause a long QT interval. It is also associated with ectopic beats, atrial tachyarrhythmias and torsades de pointes but these may be caused by co-existing hypokalemia.

See also: Electrolytes

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In the ECGquest archives, this ECG has been tagged with: - Regular Tachycardia Long QT Narrow QRS Sinus tachycardia Hypokalemia Hypomagnesaemia 12-Lead Dr Smith's ECG Blog CC BY-NC
Alcohol withdrawal and sinus tachycardia

This ECG is from a patient of unknown age who presented with alcohol withdrawl.

In the ECGquest archives, this ECG has been tagged with: - Diarrhoea Normal Axis Normal rate Regular Standard Calibration Inferior ST depression Lateral ST depression Long QT Narrow QRS Normal PR Normal Sinus Rhythm Hypocalcaemia Hypomagnesaemia 12-Lead ECG of the Week Dr John Larkin CC-BY-NC-SA
ECG of the Week – 29th January 2018 – Interpretation

This ECG is from a man in his 60s presented with several weeks of diarrhoeal illness following overseas travel. He had a past medical history of ischaemic cardiomyopathy. His medications included warfarin, a beta-blocker, a PPI, an ACE inhibitor and diuretics.