Abstract
Background. ICG videoangiography (ICG-VAG) is widely used in neurovascular surgery. In carotid artery disease, it has been used to assess the extent of the plaque and to confirm the removal of the plaque and patency of the artery. We introduce a novel usage of the ICG-VAG to confirm the patency of the external carotid artery (ECA) and superior thyroid artery (STA), which should work as a drainage system of possible debris in the lumen. Method. Consecutive 27 patients with severe internal carotid artery stenosis were employed. Carotid endarterectomy (CEA) was done in the usual fashion. After suturing the arteriotomy, ICG was injected intravenously before reperfusion. Before declamping procedure, ICG-VAG mode was started. As the declamping procedure went on, the assistant judged whether the STA and the ECA were patent by watching the ICG flow on the monitor. After confirming the patency of the ECA–CCA system, the ICA was reperfused. Result. The back flow from the STA was not confirmed in two cases. The back flow from the ECA was confirmed in all 27 cases. In four cases, the ICG-VAG showed air bubbles in the lumen; these bubbles were washed away to the ECA or STA. Conclusion. Using ICG-VAG during the reperfusion procedure of CEA, the patency of the ECA and the STA can be confirmed. It may contribute to reduce embolic complication during reperfusion procedure.
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