Current trends in cannulation and neuroprotection during surgery of the aortic arch in Europe

De Paulis, Ruggero; Czerny, Martin; Weltert, Luca; Bavaria, Joseph; Borger, Michael A; Carrel, Thierry; Etz, Christain D; Grimm, Michael; Loubani, Mahmoud; Pacini, Davide; Resch, Timothy; Urbanski, Paul P; Weigang, Ernst (2015). Current trends in cannulation and neuroprotection during surgery of the aortic arch in Europe. European journal of cardio-thoracic surgery, 47(5), pp. 917-923. Oxford University Press 10.1093/ejcts/ezu284

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OBJECTIVES

To conduct a survey across European cardiac centres to evaluate the methods used for cerebral protection during aortic surgery involving the aortic arch.

METHODS

All European centres were contacted and surgeons were requested to fill out a short, comprehensive questionnaire on an internet-based platform. One-third of more than 400 contacted centres completed the survey correctly.

RESULTS

The most preferred site for arterial cannulation is the subclavian-axillary, both in acute and chronic presentation. The femoral artery is still frequently used in the acute condition, while the ascending aorta is a frequent second choice in the case of chronic presentation. Bilateral antegrade brain perfusion is chosen by the majority of centres (2/3 of cases), while retrograde perfusion or circulatory arrest is very seldom used and almost exclusively in acute clinical presentation. The same pumping system of the cardio pulmonary bypass is most of the time used for selective cerebral perfusion, and the perfusate temperature is usually maintained between 22 and 26°C. One-third of the centres use lower temperatures. Perfusate flow and pressure are fairly consistent among centres in the range of 10-15 ml/kg and 60 mmHg, respectively. In 60% of cases, barbiturates are added for cerebral protection, while visceral perfusion still receives little attention. Regarding cerebral monitoring, there is a general tendency to use near-infrared spectroscopy associated with bilateral radial pressure measurement.

CONCLUSIONS

These data represent a snapshot of the strategies used for cerebral protection during major aortic surgery in current practice, and may serve as a reference for standardization and refinement of different approaches.

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