title: A case of cardiopulmonary arrest caused by laxatives-induced hypermagnesemia in a patient with anorexia nervosa and chronic renal failure.
abstract: We report a case of laxatives induced severe hypermagnesemia complicated with cardiopulmonary arrest. A 55-year-old woman, with nephritic syndrome and anorexia nervosa, was later transported to our emergency room (ER) because of oliguria and consciousness disturbance. During transfer to the intensive care unit from the ER, cardiopulmonary arrest suddenly occurred. Cardiopulmonary resuscitation was immediately performed, and spontaneous circulation was restored after 3 min. Thereafter, administration of dopamine, norepinephrine, and epinephrine was required to maintain systolic blood pressure at 80 mmHg. Arterial blood gas analysis showed severe metabolic alkalosis, and blood biochemical tests revealed hypermagnesemia (serum magnesium concentration, 18.5 mg/dl) and renal dysfunction. Continuous infusion of diuretics followed by massive hydration and continuous hemodiafiltration (CHDF) was started. Five days after starting CHDF, magnesium concentration was almost normalized and administration of catecholamine was stopped. It was thought that progression of renal dysfunction that occurred in the patient taking a magnesium product for chronic constipation caused reduction in magnesium excretion ability, resulting in hypermagnesemia-induced cardiopulmonary arrest. To avoid a rebound phenomenon following magnesium flux from cells, continuous blood purification seems to be an effective treatment for symptomatic hypermagnesemia.
authors: Department of Traumatology and Critical Care Medicine, School of Medicine, Sapporo Medical University, South 1, West 16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan. htatsumi@sapmed.ac.jp
authors: Hiroomi
authors: H
authors: Tatsumi
authors: Yoshiki
authors: Y
authors: Masuda
authors: Hitoshi
authors: H
authors: Imaizumi
authors: Hiromitsu
authors: H
authors: Kuroda
authors: Shin-ichiro
authors: S
authors: Yoshida
authors: Ryoko
authors: R
authors: Kyan
authors: Kyoko
authors: K
authors: Goto
authors: Yasufumi
authors: Y
authors: Asai
mesh_terms: D000856:Anorexia Nervosa / Q000097:blood* / Q000503:physiopathology; D003248:Constipation / Q000188:drug therapy; D005260:Female; D006323:Heart Arrest / Q000097:blood / Q000139:chemically induced* / Q000209:etiology*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000503:physiopathology; D054368:Laxatives / Q000009:adverse effects*; D008274:Magnesium / Q000097:blood*; D008875:Middle Aged
chemical_list: D054368:Laxatives; D008274:Magnesium