A Study on the Relation between Serum Calcium, Magnesium and Plasma Renin Activity in Essential Hypertension

Serum calcium, magnesium and plasma renin activity were studied in the groups of 20 controls and 20 hypertensives. All patients were admitted to Ewha Womans University Hospital between March 1984 and August 1984. The following results were obtained : 1) The plasma renin activity in normal controls were 1.40±1.48mg/ml/hr, and 1.59±1.97 ng/ml/hr in hypertensives. Most of the hypertensives were normal renin hypetension. 2) The serum calcium in normal controls were 8.85±0.84mg/dl and 9.14±0.49mg/dl in hypertensives and had no correlationship between plasma renin activity and serum ca-lcium in controls, byt had positive correlationship in hypertensives (P<0.025). 4) The serum magnesium in normal controls were 2.85±0.82mg/dl and 2.63±0.34mg/dl in hypertensives and had no correlationship to mean blood pressure. 5) There were no correlationship between plasma renin activity and serum magnesium in both controls and hypertensives.