Aminohydroxypropylidene bisphosphonate (APD) treatment for tumor-associated hypercalcemia: a randomized comparison between a 3-day treatment and single 24-hour infusions.
Intravenous aminohydroxypropylidene bisphosphonate (APD) normalizes serum calcium in most hypercalcemic cancer patients, however the optimal therapeutic scheme has not been established. We compared in a randomized prospective trial the efficacy and the tolerance of APD given as a 3-day treatment of daily 2-h infusions of 0.5 mg/k.d in 250 ml of saline (group A) with single 24-h infusions of 1.5 mg/kg (group B) or of 0.5 mg/kg in 1 liter of saline (group C). Thirty-three cancer patients remaining hypercalcemic after a 48-h rehydration period were included and monitored daily until normocalcemia or treatment failure was documented. Serum calcium became normal in all but 1 patient (in group C) but remained normal for only 1 or 2 days in 4 other patients (1 in A, 1 in B, 2 in C). The decline in total or ionized serum calcium was slightly less marked in group C than in the two other groups, but the differences were not significant. The fall of fasting urinary calcium excretion was however significantly less rapid in group C (p less than 0.05 from day 1 to day 4). Serum concentrations of iPTH and 1,25-dihydroxyvitamin D [1,25-(OH)2D] increased significantly in the three groups. Serum magnesium concentrations fell slightly from 1.41 +/- 0.05 to 1.28 +/- 0.04 mEq/liter (p less than 0.001) after rehydration but returned to normal after APD administration (day 5, 1.52 +/- 0.04 mEq/liter, p less than 0.001 versus day 0).(ABSTRACT TRUNCATED AT 250 WORDS)
Body
J J
JJ
Service de Médecine, l'Université Libre de Bruxelles, Institut Jules Bordet, Belgium.
Magritte
A
A
Seraj
F
F
Sculier
J P
JP
Borkowski
A
A
D000328:Adult; D000368:Aged; D001862:Bone Resorption / Q000097:blood / Q000652:urine; D004164:Diphosphonates / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D004334:Drug Administration Schedule; D005260:Female; D006403:Hematologic Tests; D006801:Humans; D006934:Hypercalcemia / Q000188:drug therapy* / Q000209:etiology / Q000652:urine; D007262:Infusions, Intravenous; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications*; D000077268:Pamidronate; D010257:Paraneoplastic Syndromes / Q000188:drug therapy* / Q000652:urine; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic
D004164:Diphosphonates; D000077268:Pamidronate