Serum & muscle magnesium in Indians with cirrhosis of liver.

Magnesium status of Indian patients with cirrhosis of liver (alcoholic and non alcoholic) and the role of low magnesium in neuromuscular and neuropsychiatric manifestations of chronic liver disease were evaluated in 76 male cirrhotics (alcoholic 37, aged 48 +/- 11 yr, non alcoholic 39, aged 47 +/- 12 yr) and 37 male controls (aged 49 +/- 11 yr). Serum magnesium levels were similar in the 3 groups studied. Muscle magnesium in both groups of cirrhotics were significantly lower than in controls (alcoholic cirrhosis 33.77 +/- 16.85; non alcoholic cirrhosis 37.93 +/- 18.86 and controls 70.52 +/- 6.49 mEq/kg fat free dry mass; P < 0.001). Multiple regression analysis comparing muscle magnesium with clinical and biochemical parameters in cirrhosis showed that hepatic encephalopathy was associated significantly and independently with low muscle magnesium (Beta = -0.313; P = 0.01). These results indicate that patients with cirrhosis have significantly lower muscle magnesium than controls and suggests that low muscle magnesium may be a factor associated with or precipitating hepatic encephalopathy.