Summary: In a single-centre trial during total thyroidectomy with central neck dissection, ischaemic preconditioning of the parathyroid glands did not reduce postoperative hypoparathyroidism, though an exploratory analysis suggested faster early parathyroid function recovery.
PICO Summary
| Element | Detail |
|---|---|
| Population | 135 patients undergoing total thyroidectomy with central neck dissection for differentiated thyroid carcinoma (single centre). |
| Intervention | Intraoperative ischaemic preconditioning: three cycles of 60-second arterial occlusion then 60-second reperfusion (n=67). |
| Comparison | Standard surgery without preconditioning (n=68). |
| Outcome | No significant reduction in postoperative hypoparathyroidism (50.8% vs 41.2%; p=0.265) or protracted hypoparathyroidism (6.0% vs 14.7%; p=0.096). Exploratory: higher early parathyroid function recovery (88.2% vs 64.3%; p=0.025). Hypocalcaemia and surgical complications comparable. |
Ischaemic preconditioning of parathyroid glands
RCT · total thyroidectomy + CND · DTC
Ischaemic preconditioning did not lower postoperative or protracted hypoparathyroidism. A faster early recovery signal was exploratory only and needs a properly powered confirmatory trial.
Expert Commentary
Postoperative hypoparathyroidism is the bane of thyroid surgery, so a cheap intraoperative manoeuvre that might protect the glands is an appealing idea, and ischaemic preconditioning has a respectable physiological pedigree elsewhere in surgery. The discipline this trial demands, though, is to read the primary endpoint first, and it was negative: the rates of both postoperative and protracted hypoparathyroidism did not differ significantly. The interesting part, faster early parathyroid function recovery, is explicitly exploratory, a secondary signal in a 135-patient single-centre study, and the authors themselves flag it as hypothesis-generating rather than practice-changing. I take that honesty at face value. A single positive exploratory analysis against a negative primary is exactly the pattern that fails to replicate when tested head-on. Can I use this with my patients? Not as an endocrinologist performing surgery, but more to the point, I would not yet advise surgical colleagues to adopt it on the strength of an exploratory finding. It is a promising signal worth a properly powered confirmatory trial with parathyroid recovery as the prespecified primary endpoint. Until then, meticulous gland identification and preservation remain the proven approach.
References
Sheng Q, Zhang P, Zhang T, et al. A randomized trial evaluating intraoperative ischemic preconditioning of parathyroid glands during total thyroidectomy: a signal for earlier parathyroid function recovery. J Invest Surg. 2026;39(1):2613617. doi:10.1080/08941939.2026.2613617