title: Hypoparathyroidism after total parathyroidectomy plus subcutaneous autotransplantation for secondary hyperparathyroidism--any side effects?
abstract: BACKGROUND
  This retrospective, case-control study was designed to find side effects of hypoparathyroidism after total parathyroidectomy plus autotransplantation.
  
  
  METHODS
  After successful total parathyroidectomy plus autotransplantation for symptomatic secondary hyperparathyroidism, 19 patients who had intact parathyroid hormone (iPTH) levels <10 pg/ml during the follow-up period of 1 year and 38 patients, who had levels >10 pg/ml, were enrolled as the hypoparathyroid and nonhypoparathyroid groups. Data were collected on etiology, symptoms, serum levels of calcium, phosphate, alkaline phosphatase (Alk-ptase), iPTH, and bone mineral density (BMD) at different sites. Then, 1 week, 3 months, and 1 year after surgery, serum levels of calcium, phosphate, Alk-ptase, and iPTH were measured again. Three months later, symptoms were recorded. One year after surgery, the BMD at different sites was measured again. Patients' daily requirements of calcium carbonate and vitamin D3 were recorded at the mean follow-up of 24 months.
  
  
  RESULTS
  Calcium, phosphate, and iPTH levels decreased significantly 1 week, 3 months, and 1 year after surgery, and Alk-ptase levels increased at 1 week and then decreased significantly 3 months and 1 year after surgery. Symptoms improved significantly 3 months after surgery. The BMD of different sites increased significantly at 1 year. There were no differences between the two groups regarding changes of symptoms, BMD, and calcium, phosphate, and Alk-ptase levels. Hypoparathyroid patients required significantly more calcium carbonate and vitamin D3 than nonhypoparathyroid patients did (P = 0.002).
  
  
  CONCLUSIONS
  Even though hypoparathyroid patients require more calcium carbonate and vitamin D3 than nonhypoparathyroid patients do, they do not have any side effects.
authors.affiliation: Department of Surgery, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, 123, Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien, 833, Taiwan, ROC.
authors.forename: Fong-Fu
authors.initials: FF
authors.lastname: Chou
authors.forename: Shun-Yu
authors.initials: SY
authors.lastname: Chi
authors.forename: Kun-Chou
authors.initials: KC
authors.lastname: Hsieh
mesh_terms: D016022:Case-Control Studies; D005260:Female; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000601:surgery*; D007011:Hypoparathyroidism / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D010280:Parathyroid Glands / Q000601:surgery / Q000637:transplantation*; D010281:Parathyroid Hormone / Q000032:analysis; D016105:Parathyroidectomy / Q000009:adverse effects*; D012189:Retrospective Studies; D014182:Transplantation, Autologous
chemical_list: D010281:Parathyroid Hormone