Fig. 2

Parathyroid hormone (PTH) levels over time by group. This figure illustrates changes in PTH levels at three time points: preoperation (pre-op), postoperation day 1 (post-op day 1), and postoperation week 1 (post-op week 1). The blue line represents the control group (group 0), and the orange line represents the experimental group (group 1). Shaded areas around the lines indicate the confidence intervals for PTH levels in each group. Both groups experienced a decrease in PTH levels on post-op day 1, followed by an increase by post-op week 1. Group 0 exhibited a more pronounced decline, while Group 1 maintains higher PTH levels throughout the postoperative period, indicating better preservation of parathyroid function in the experimental group.