Zentralblatt fur Chirurgie · 2018
[Intraoperative Indocyanine Green Fluorescence to Assure Vital Parathyroids in Thyroid Resections].
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Karampinis Ioannis, Di Meo Giovanna, Gerken Andreas, Stasiunaitis Vytautas, Lammert Alexander, Nowak Kai
Аннотация
INTRODUCTION: Total thyreoidectomy is associated with high rates of temporary or permanent hypoparathyroidism. During surgery, ICG fluorescence angiography can be used to detect and preserve well vascularised parathyroid glands; this technique has been recently introduced in retrospective and prospective trials as an intraoperative technical support to avoid postoperative hypoparathyroidism.
MATERIALS UND METHODS: 27 patients undergoing total thyreoidectomy were prospectively enrolled in our study. The vascularisation of the parathyroid glands was analysed intraoperatively using ICG tissue angiography. 5 mg indocyanine green were intravenously administered. Fluorescence angiography was evaluated in real time using the PinPoint (Novadaq, Canada) imaging system. The study was approved by the local ethics committee.
RESULTS: ICG fluorescence angiography was performed uneventfully in all cases. There was no case of postoperative hypoparathyroidism when at least one parathyroid gland with high fluorescence intensity was preserved. In 4 cases, only low fluorescence intensity was detected in the remaining parathyroid glands after completing the resection. All 4 patients received activated vitamin D3 prophylactically. Two of 4 developed symptomatic hypocalcaemia due to temporary hypoparathyroidism.
CONCLUSION: Implementation of ICG fluorescence angiography can help in predicting and therefore preventing postoperative hypoparathyreoidism after total thyreoidectomy. If a well vascularised parathyroid gland with high ICG fluorescence intensity can be secured, calcium substitution and postoperative prophylaxis of hypoparathyreoidism may become obsolete in the future.
MATERIALS UND METHODS: 27 patients undergoing total thyreoidectomy were prospectively enrolled in our study. The vascularisation of the parathyroid glands was analysed intraoperatively using ICG tissue angiography. 5 mg indocyanine green were intravenously administered. Fluorescence angiography was evaluated in real time using the PinPoint (Novadaq, Canada) imaging system. The study was approved by the local ethics committee.
RESULTS: ICG fluorescence angiography was performed uneventfully in all cases. There was no case of postoperative hypoparathyroidism when at least one parathyroid gland with high fluorescence intensity was preserved. In 4 cases, only low fluorescence intensity was detected in the remaining parathyroid glands after completing the resection. All 4 patients received activated vitamin D3 prophylactically. Two of 4 developed symptomatic hypocalcaemia due to temporary hypoparathyroidism.
CONCLUSION: Implementation of ICG fluorescence angiography can help in predicting and therefore preventing postoperative hypoparathyreoidism after total thyreoidectomy. If a well vascularised parathyroid gland with high ICG fluorescence intensity can be secured, calcium substitution and postoperative prophylaxis of hypoparathyreoidism may become obsolete in the future.