title: Ionized serum calcium in black hypertensives: absence of a relationship with blood pressure.
abstract: Serum ionized calcium was measured in untreated black hypertensives (n = 50) and normotensives (n = 33) recruited from the same outpatient facility. The only important descriptive characteristic on which the two groups differed was body mass index. Serum ionized calcium levels were identical (1.19 +/- 0.05 mg/dl; mean +/- SD), and no significant relationships between serum calcium and other covariates could be identified. It would appear that ionized calcium is a jealously guarded biologic variable and is held within narrow limits in essential hypertension.
authors.affiliation: Section of Clinical Epidemiology, Cook County Hospital, Chicago, Illinois 60612.
authors.forename: R S
authors.initials: RS
authors.lastname: Cooper
authors.forename: N
authors.initials: N
authors.lastname: Shamsi
mesh_terms: D000328:Adult; D044383:Black People; D001794:Blood Pressure; D001806:Blood Urea Nitrogen; D002118:Calcium / Q000097:blood*; D003404:Creatinine / Q000097:blood; D005260:Female; D006801:Humans; D006973:Hypertension / Q000097:blood*; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000097:blood; D012964:Sodium / Q000097:blood
chemical_list: D012964:Sodium; D003404:Creatinine; D002118:Calcium