Infrared Thermometry of Parathyroid Glands During Thyroidectomy From the Position of Predicting the Development of Postoperative Hypoparathyroidism

Abstract

Objective: to study the results of intraoperative infrared thermometry parathyroid glands to assess their functional status after performing thyroidectomy with the position of predicting the development of postoperative hypoparathyroidism. Materials and methods. The work was a prospective controlled study, which included 54 patients after thyroidectomy performed for benign thyroid diseases. The average of 50.4 ± 3.8 years. Indications for surgical treatment: in 19 patients - nodular non-toxic goiter with compression of the organs of the neck; in 17 - nodular toxic goiter; in 18 - Graves disease. From the study were excluded patients with a relapse after previously completed surgery. For intraoperative thermometry we used a infrared thermometer CEM®ThermoDianostics (production of JSC «CEM-technology»). The thermometry was performed sequentially, starting from the top right and finishing with the left lower parathyroid gland after thyroidectomy. For the initial level compare temperatures were taken temperature thyroid tissue. Results. When conducting the thermometry of thyroid tissue before the start of mobilization, the average level of temperature was 36.5[35; 37.5]°C. the Average temperature of the parathyroid glands was on average 2±0,5°C lower than this figure. When comparing the performance of intraoperative determination of PTH level with the data of thermometry it turned out that the decrease in the average temperature of the parathyroid glands less than 2°C, led to significant disruption of their function, which is confirmed by the results of intraoperative determination of PTH, and decrease in temperature by more than 2.5 - 3°C was a prognostic factor of postoperative hypocalcemia, which was registered in 4 patients.