PMID- 35790366 OWN - NLM STAT- MEDLINE DCOM- 20220706 LR - 20220706 IS - 0386-300X (Print) IS - 0386-300X (Linking) VI - 76 IP - 3 DP - 2022 Jun TI - Rhabdomyolysis with Multiple Electrolyte Imbalances under Proton Pump Inhibitor Treatment after Total Thyroidectomy. PG - 339-342 LID - 10.18926/AMO/63745 [doi] AB - A 90-year-old man presented with muscle weakness, difficulty concentrating, and dysphagia. About eighteen months prior to presentation, lansoprazole had been initiated to prevent stress ulcers; he also had a history of total thyroidectomy due to papillary thyroid cancer ten years prior. Laboratory findings were as follows: K 2.4 mEq/L, Ca 3.7 mg/dL, Mg 1.3 mg/dL, CK 5386 U/L, and intact PTH (iPTH) 14 pg/mL. Rhabdomyolysis with multiple electrolyte imbalances under proton pump inhibitor (PPI) treatment was diagnosed. We initiated intravenous hydration and electrolyte supplementation with discontinuation of PPI. After discontinuing PPI, the patient's serum magnesium, potassium, and calcium levels normalised with oral vitamin D and calcium supplementation. PPIs can cause hypocalcaemia and hypokalaemia via hypomagnesemia; hypocalcaemia is also a common postoperative complication of thyroidectomy. Careful monitoring of electrolyte levels is required in patients with long-term PPI treatment, especially in post-thyroidectomy cases. FAU - Yano, Akihiko AU - Yano A AD - Department of General Medicine, Kochi Health Sciences Center. FAU - Sada, Ken-Ei AU - Sada KE AD - Department of General Medicine, Kochi Health Sciences Center. AD - Department of Clinical Epidemiology, Kochi Medical School, Kochi University. AD - Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences. FAU - Sawada, Tsutomu AU - Sawada T AD - Department of General Medicine, Kochi Health Sciences Center. FAU - Ito, Hideki AU - Ito H AD - Department of General Medicine, Kochi Health Sciences Center. FAU - Yano, Hiroko AU - Yano H AD - Department of General Medicine, Kochi Health Sciences Center. FAU - Ikeda, Tatsuya AU - Ikeda T AD - Department of General Medicine, Kochi Health Sciences Center. LA - eng PT - Case Reports PL - Japan TA - Acta Med Okayama JT - Acta medica Okayama JID - 0417611 RN - 0 (Proton Pump Inhibitors) RN - SY7Q814VUP (Calcium) SB - IM MH - Aged, 80 and over MH - Calcium MH - Humans MH - *Hypocalcemia/drug therapy/etiology MH - Male MH - Proton Pump Inhibitors/therapeutic use MH - *Rhabdomyolysis MH - *Thyroid Neoplasms MH - Thyroidectomy/adverse effects OTO - NOTNLM OT - hypocalcaemia OT - hypomagnesemia OT - proton pump inhibitors OT - rhabdomyolysis OT - thyroidectomy COIS- No potential conflict of interest relevant to this article was reported. EDAT- 2022/07/06 06:00 MHDA- 2022/07/07 06:00 CRDT- 2022/07/05 21:18 PHST- 2022/07/05 21:18 [entrez] PHST- 2022/07/06 06:00 [pubmed] PHST- 2022/07/07 06:00 [medline] AID - 10.18926/AMO/63745 [doi] PST - ppublish SO - Acta Med Okayama. 2022 Jun;76(3):339-342. doi: 10.18926/AMO/63745.