Immediate and medium-term results of intraoperative parathyroid hormone monitoring during video-assisted parathyroidectomy.

Hypothesis: Using an intraoperative parathyroid hormone (IOPTH) assay during video-assisted parathyroidectomy by lateral approach is useful in patients with sporadic primary hyperparathyroidism, and the medium-term results of surgery are excellent.

Design: Retrospective study of patients with sporadic primary hyperparathyroidism following video-assisted parathyroidectomy by lateral approach with IOPTH measurement.

Patients: Of 394 patients with sporadic primary hyperparathyroidism, 200 (67%) were eligible for video-assisted parathyroidectomy by lateral approach: patients in whom a single enlarged gland was clearly localized by ultrasonography, sestamibi scintigraphy, or both.