The Transcranial Doppler Sonography for Optimal Monitoring and Optimization of Cerebral Perfusion in Aortic Arch Surgery: A Case Series

Authors

  • Tamer Ghazy Department of Cardiac Surgery, Dresden Heart Centre University Hospital, Dresden University of Technology, Dresden, Germany
  • Ayham Darwisch Department of Cardiac Surgery, Dresden Heart Centre University Hospital, Dresden University of Technology, Dresden, Germany
  • Torsten Schmidt Department of Cardiac Anaesthesia, Dresden Heart Centre University Hospital, Dresden University of Technology, Dresden, Germany
  • Phong Nguyen Faculty of Medicine, Charles University, Prague, Czech Republic
  • Zuzana Fajfrova Department of Cardiac Surgery, Dresden Heart Centre University Hospital, Dresden University of Technology, Dresden, Germany
  • Klaus Matschke Department of Cardiac Surgery, Dresden Heart Centre University Hospital, Dresden University of Technology, Dresden, Germany
  • Utz Kappert Department of Cardiac Surgery, Dresden Heart Centre University Hospital, Dresden University of Technology, Dresden, Germany

DOI:

https://doi.org/10.1532/hsf.1755

Abstract

Objective: To analyze the feasibility and advantages of transcranial doppler sonography (TCD) for monitoring and optimization of selective cerebral perfusion (SCP) in aortic arch surgery.

Methods: From April 2013 to April 2014, nine patients with extensive aortic pathology underwent surgery under moderate hypothermic cardiac arrest with unilateral antegrade SCP under TCD monitoring in our institution. Adequate sonographic window and visualization of circle of Willis were to be confirmed. Intraoperatively, a cerebral cross-filling of the contralateral cerebral arteries on the unilateral SCP was to be confirmed with TCD. If no cross-filling was confirmed, an optimization of the SCP was performed via increasing cerebral flow and increasing PCO2. If not successful, the SCP was to be switched to bilateral perfusion. Air bubble hits were recorded at the termination of SCP.

Results: A sonographic window was confirmed in all patients. Procedural success was 100%. The mean operative time was 298 ± 89 minutes. Adequate cross-filling was confirmed in 8 patients. In 1 patient, inadequate cross-filling was detected by TCD and an optimization of cerebral flow was necessary, which was successfully confirmed by TCD. There was no conversion to bilateral perfusion. Extensive air bubble hits were confirmed in 1 patient, who suffered a postoperative stroke. The 30-day mortality rate was 0. 

Conclusion: The TCD is feasible for cerebral perfusion monitoring in aortic surgery. It enables a confirmation of adequacy of cerebral perfusion strategy or the need for its optimization. Documentation of calcific or air-bubble hits might add insight into patients suffering postoperative neurological deficits.

References

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Published

2017-06-16

How to Cite

Ghazy, T., Darwisch, A., Schmidt, T., Nguyen, P., Fajfrova, Z., Matschke, K., & Kappert, U. (2017). The Transcranial Doppler Sonography for Optimal Monitoring and Optimization of Cerebral Perfusion in Aortic Arch Surgery: A Case Series. The Heart Surgery Forum, 20(3), E085-E088. https://doi.org/10.1532/hsf.1755

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