Serum magnesium levels in symptomatic atrial fibrillation and their relation to rhythm control by intravenous digoxin.


To study the effect of hypomagnesemia on control of atrial fibrillation (AF), serum magnesium levels were determined in 45 consecutive patients with symptomatic AF; 20% were hypomagnesemic (serum magnesium less than 1.5 mEq/liter). In a blinded treatment protocol, hypomagnesemic patients required twice the amount of intravenous digoxin to effect control of… (More)


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