Magnesium deficiency contributing to ventricular tachycardia. Two case reports.

Two cases of ventricular tachycardia (VT), possibly caused by magnesium deficiency, are presented. Skeletal muscle biopsies and blood samples were taken before and after magnesium infusions. These infusions resulted in a significant retention of magnesium, and the VT attacks vanished permanently in one case and temporarily in the other.