• Qing Zhai, Yun Wang, and Ayong Tian.
• Department of Anesthesiology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
• Medicine (Baltimore). 2017 Nov 1; 96 (46): e8766.

RationaleThe increasingly intraoperative use of indocyanine green (ICG) means that it is necessary to be aware of both its advantages and potential adverse effects.Patient ConcernsA 76-year-old woman developed symptoms of sudden severe hemodynamic instability while undergoing coronary artery bypass grafting with ICG injection to detect the patency of the graft. The main clinical manifestations were a sudden drop in blood pressure and increased heart rate.DiagnosesSevere side effects or allergic reaction of ICG.InterventionsCardiopulmonary bypass (CPB) was established, and an intra-aortic balloon pump was implanted in the left femoral artery after intravenous epinephrine and manual cardiac compression failed.OutcomesThe patient was extubated and transferred to the general ward on the third postoperative day.LessonsInvasive blood pressure monitoring should be carried out in patients undergoing intraoperative ICG administration. Anesthetists should pay close attention to the patient's hemodynamic fluctuations, and effective emergency measures should be implemented immediately if severe hemodynamic instability occurs.

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