title: Water intoxication associated with moderate dose of cyclophosphamide pulse therapy in an elderly patient: a case report and literature review.
abstract: Intravenous high-dose cyclophosphamide infusion, usually performed to treat malignant neoplasms, is known to cause water intoxication. Intravenous cyclophosphamide pulse therapy (IVCY) is increasingly being employed for the treatment of rheumatic diseases as well. Recently, water intoxication has been reported to occur even after low-to-moderate doses of IVCY. In the present paper, we describe a case of polyarteritis nodosa in a patient in whom water intoxication developed after IVCY at a moderate dose. Hydration is usually performed to maintain sufficient urine flow to avoid cystitis. Based on our case and a review of the literature, it is recommended that hydration should be carefully performed during IVCY in order to avoid water intoxication, especially when treating elderly patients.
authors.affiliation: Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa, Maebashi, 371-8511, Japan.
authors.forename: Kunio
authors.initials: K
authors.lastname: Yanagisawa
authors.forename: Keiju
authors.initials: K
authors.lastname: Hiromura
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Yagi
authors.forename: Akihiko
authors.initials: A
authors.lastname: Yokohama
authors.forename: Yoriaki
authors.initials: Y
authors.lastname: Kaneko
authors.forename: Takashi
authors.initials: T
authors.lastname: Kuroiwa
authors.forename: Kazue
authors.initials: K
authors.lastname: Ueki
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Nojima