Changes and comparison of PTH level
In the UL group, there were no significant differences between the carbon nanoparticles and control groups in terms of preoperative (P=0.1582), intraoperative (P=0.9048), and postoperative day one (P=0.7747) and first month (P=0.3840) serum PTH levels, Changes and comparison of parathyroid hormone at different time points in UL and TT subgroup.A: Carbon nanoparticles group; B: Control group.In the TT group, there was no significant difference between the carbon nanoparticles and control groups in terms of preoperative (P=0.6870), intraoperative (P=0.6719), and postoperative day one (P=0.4255) serum PTH levels. However, the mean serum PTH in carbon nanoparticles group was significantly higher than that of the control group (25.92 ± 19.76 mmol/L 