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Home > Parathyroid surgery – directed parathyroid exploration

Parathyroid surgery – directed parathyroid exploration

January 18, 2012 By admin

directed-parathyroid-surgery

Parathyroid surgery

Directed parathyroid exploration: Evolution and evaluation of this approach in a single-institution review of 346 patients

Phillip K. Pellitteri DO, FACS, The Laryngoscope, Volume 113, Issue 11, pages 1857–1869, November 2003

Study objectives and hypothesis

This study evaluated a directed exploration protocol used by a single surgeon in the management of surgical parathyroid disease

Study Design

Retrospective chart review was made of patients surgically managed for hyperparathyroidism at an academic tertiary care center

Methods

Three hundred forty-six patients were evaluated for biochemically proven hyperparathyroidism between March 1995 and February 2002. A directed exploration protocol was implemented in appropriately selected patients with primary hyperparathyroidism and in patients with secondary or tertiary hyperparathyroidism requiring repeat operation.

The protocol included:

  • preoperative technetium-99m sestamibi imaging for hyperfunctional parathyroid localization
  • targeted neck exploration
  • rapid intraoperative parathyroid hormone determination
  • limited-stay discharge from the ambulatory surgical recovery unit
  • Data collection was accomplished by entering patient evaluation, management, and outcome information prospectively into collective case report forms

A retrospective analysis of the data was conducted for the purpose of evaluating the effectiveness of the protocol.

Study results

  • Sustained normocalcemia beyond 6 months postoperatively was achieved in 99% of patients with primary hyperparathyroidism
  • 84% of patients with secondary or tertiary hyperparathyroidism achieved normocalcemia or had resolution of symptoms as a measure of therapeutic success
  • The complication rate for the entire series of patients was 2.8%
  • 92% of positive findings on sestamibi scan correctly predicted the location of an adenoma, whereas a negative finding accurately predicted the absence of an enlarged gland in a “usual” location in 81% of patients
  • 9% had a false-positive finding on the scan, whereby a solitary adenoma was found contralateral to the side indicated by the scan
  • Overall, the positive predictive value for sestamibi imaging in the series was 91%
  • Intraoperative parathyroid hormone determination yielded an overall rate of reduction of 80% from preoperative levels during directed exploration
  • Sustained normocalcemia was achieved in all patients in whom intraoperative parathyroid hormone determination demonstrated a minimum decline of 50% from preoperative levels following resection of hyperfunctional parathyroid tissue (adenoma[s])
  • The majority (72%) of patients were managed in an outpatient (ambulatory surgery) setting and were discharged to home within 8 to 12 hours after surgery.

Conclusions

The directed exploration protocol for surgical management of hyperparathyroidism generated surgical rates of success that were as good as and, in most cases, improved over that of traditional bilateral exploration. This was associated with low morbidity and reduced time and facility utilization, conveying improved cost-effectiveness. This surgical strategy should serve to enhance the capability of the surgeon to safely and efficiently manage the majority of patients with surgical parathyroid disease.

 

Filed Under: Parathyroid Surgery

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