title: Calcium in patients on hemodialysis.
abstract: Analyzing 415 measurements from 33 patients on chronic maintenance hemodialysis we confirm that 50% of total calcium in the range 1.59 to 3.33 mmol/l gives a valuable approximation to ionized calcium in the range 0.79 to 1.62 mmol/l. However, a small but significant effect of albumin and phosphate on ionized calcium can also be demonstrated. Conventional albumin correction of total calcium using the formula: total calcium + (43 g/l-Albumin g/l).0.017 mmol/g is of poor value in these patients on maintenance hemodialysis.
authors.affiliation: Medical Department C, Aalborg Hospital, Denmark.
authors.forename: T
authors.initials: T
authors.lastname: Ring
authors.forename: P
authors.initials: P
authors.lastname: Halkier
authors.forename: H H
authors.initials: HH
authors.lastname: Hansen
authors.forename: A K
authors.initials: AK
authors.lastname: Sanden
authors.forename: C
authors.initials: C
authors.lastname: Nielsen
mesh_terms: D002118:Calcium / Q000097:blood*; D006801:Humans; D006934:Hypercalcemia / Q000175:diagnosis; D006996:Hypocalcemia / Q000175:diagnosis; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000628:therapy; D008875:Middle Aged; D010710:Phosphates / Q000097:blood; D006435:Renal Dialysis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012709:Serum Albumin / Q000032:analysis
chemical_list: D010710:Phosphates; D012709:Serum Albumin; D002118:Calcium