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KDIGO guidelines and parathyroidectomy for renal hyperparathyroidism #MMPMID25982045
J Surg Res 2015[Nov]; 199 (1): 115-20 PMID25982045show ga
Introduction: Patients with end stage renal disease(ESRD) develop hypocalcemia, resulting in secondary hyperparathyroidism(SHPT). No clear criterions exist to aid in surgical decision making for SHPT. The 2009 Kidney Disease: Improving Global Outcomes(KDIGO) guidelines provide target ranges for serum calcium, phosphate and parathyroid hormone(PTH) levels in patients with ESRD. Parathyroidectomy can help achieve these targets. The study purpose is to examine how parathyroidectomy for SHPT impacts KDIGO targets during immediate and long-term follow-up, and to evaluate KDIGO categorization with receipt of additional surgical intervention. Methods: A retrospective review of a prospective parathyroidectomy database was performed. Included patients had SHPT, were on dialysis and underwent parathyroidectomy. Calcium, phosphate and PTH values were classified as below, within, or above KDIGO targets. Results: Between 2000 and 2013, 36 patients with SHPT met criteria. Subtotal parathyroidectomy was performed in 89%, total parathyroidectomy in 11%. Follow-up time was 54±7 months. 8 patients(22%) required additional surgery. 28 patients(76%) were alive at last follow-up. At last follow up, patients had phosphate(46%), and PTH(17%) above KDIGO ranges.Factors associated with re-operation were assessed. Patient PTH within or above target immediately post-operative had a higher rate of reoperation(p<0.01). At last follow-up, higher phosphate(p=0.054) and PTH(p<0.001) were associated with higher reoperation rates, but calcium(p=0.33) was not. Conclusions: PTH and phosphate levels above KDIGO indices were associated with additional surgical intervention. Many patients had laboratory indices above range at last follow-up, suggesting more patients had persistent or recurrent disease than underwent reoperation. Patients may benefit from more aggressive medical and/or surgical management.