Hypomagnesemia can be caused by a wide range of diseases (e.g. gastrointestinal disorders, kidney diseases or endocrine disorders), but it can also be a side effect of several drugs. It can be asymptomatic or cause many different clinical symptoms, and the clinical manifestations mainly depend on the rate of development rather than the actual serum magnesium concentration. We here present a 40-year-old female patient with Torsade de pointes ventricular tachycardia and cardiac arrest caused by severe hypomagnesemia as an adverse effect of the proton pump inhibitor omeprazole.
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