Role of Postoperative Intact Parathyroid Hormone Levels in Predicting Hypocalcaemia after Thyroidectomy

To determine the sensitivity and specificity of intact parathyroid hormone (iPTH) levels in predicting hypocalcaemia after thyroidectomy. A descriptive cross-sectional study. Place and Duration of the Study: Department of General Surgery, Shifa International Hospital and Shifa Foundation, Islamabad, from May 2021 to 2022. The sample size was calculated to be 205 with consecutive non-probability sampling. Serum iPTH levels and serum calcium levels were measured postoperatively at 6 hours and 24 hours and recorded in a proforma for analysis. After collection, the data were entered and analysed using SPSS version 24.0. Among 205 patients, 157 (76.6%) were females and 48 (23.4%) were males. At 6 hours postoperatively, 121 (59%) patients had normal iPTH levels and 123 (60%) patients had normal serum calcium levels (p = 0.15). At 24-hour, 130 (63.4%) patients had normal iPTH levels and 92 (44.9%) patients had normal serum calcium levels (p = 0.001). Overall, 8 (3.9%) patients developed symptomatic hypocalcaemia (p =