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Abstract
Abstract Background and Aims To investigate the efficacy of parathyroidectomy (PTX) in the treatment of persistent hyperparathyroidism (PHPT) after renal transplantation and the effect of PTX on renal allograft function. Method This single-center retrospective study enrolled 31 patients who underwent PTX for the treatment of PHPT after renal transplantation in the Kidney Disease Center of the First Affiliated Hospital of Zhejiang University from May 2010 to Oct. 2018. The changes of serum calcium, serum phosphorus, alkaline phosphatase, parathyroid hormone(PTH), serum creatinine, and estimated glomerular filtration rate (eGFR) in the preoperative and postoperative periods (1w, 1m, 3m, 6m,12m) were compared. The operative successful rate (12 m) and postoperative complications were calculated. Results The serum calcium before PTX was (2.78±0.18) mmol/L, which decreased significantly to (2.19±0.34) mmol/L at 1 week postoperatively (P<0.01). The serum phosphorus before PTX was (0.76±0.16) mmol/L, which decreased significantly to (0.97±0.26) mmol/L at 1 week postoperatively (P<0.01). The PTH before PTX was (276.00±200.60) pg/mL, which decreased significantly to (46.62±104.36) pg/mL at 1 week postoperatively (P<0.01). The alkaline phosphatase before PTX was (261.59±236.95) U/L, which decreased significantly to (154.90±117.37) U/L at 3 months postoperatively (P<0.01). No significant difference was found in postoperative serum creatinine or eGFR levels compared with the baseline. The operative successful rate was 90.3% at 12 months postoperatively. The incidence rates of postoperative transient hypocalcemia, persistent hypoparathyroidism, and hoarseness were 35.5%, 3.2% and 3.2% respectively. No persistent hypocalcemia, incision hemorrhage, incision infection, or surgery-related death happened. Conclusion PTX can quickly and effectively alleviate high calcium, low phosphorus, high PTH and high alkaline phosphatase after renal transplantation. PTX is effective and safe in the treatment of PHPT after renal transplantation, and has no effect on renal allograft function.
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