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Keywords:

  • secondary hyperparathyroidism;
  • parathyroidectomy;
  • intraoperative monitoring;
  • parathyroid hormone;
  • follow-up studies

Abstract

Background

Use of intraoperative parathyroid hormone (ioPTH) monitoring during total parathyroidectomy for secondary hyperparathyroidism is common, although its ability to predict long-term normoparathyroid state is not known.

Methods

Prospective evaluation of 57 consecutive patients undergoing total parathyroidectomy for renal hyperparathyroidism with ioPTH monitoring and follow-up PTH assays were used to categorize the patients into 3 groups: success, adequate biochemical control, and failure.

Results

There was no statistically significant difference in percentage reduction of ioPTH between the 3 groups (p = .07), although there was a moderate negative correlation between percentage reduction of ioPTH and percentage reduction of PTH at follow-up (R = 0.57).

Conclusions

When used under current guidelines, ioPTH monitoring is of no use in predicting long-term cure for these patients because it does not predict success. Patients that undergo total parathyroidectomy are required to have long-term calcium and PTH assay follow-up because normoparathyroidism cannot be assumed. Using the regression equation calculated, success may be predicted for future patients. © 2010 Wiley Periodicals, Inc. Head Neck, 2010