the aim of this study was to investigate the prevalence of mg deficiency and effect of aminophylline infusion on urine magnesium concentration after magnesium loading test (mlt). to determine serum mg, venous blood specimens were obtained just before the first mlt. two mlts were performed. the first one was done before starting aminophylline infusion and the 2nd one was done during aminophyllin...

LETTERS Hypomagnesaemia due to malabsorption is not always responsive to oral magnesium oxide supplementation alone We read with interest the Gut File report by Dr Ross and colleagues of hypomagnesaemia due to malabsorption, eventually responding to oral magnesium oxide supplementation (Gut 2001;48:857–8). Our experience however has been different. For the past seven years we have managed a 65 ...