• Zhonghua Wai Ke Za Zhi · Feb 2003

    [Clinical application of retrograde cerebral perfusion for brain protection during the surgery of ascending aortic aneurysm: 50 cases report].

    • Pei-qing Dong, Yu-long Guan, Mei-ling He, Jing Yang, Cai-hong Wan, and Shun-ping Du.
    • Department of Extracorporeal Circulation, Anzhen Hospital, Capital University of Medical Sciences, Beijing 100029, China.
    • Zhonghua Wai Ke Za Zhi. 2003 Feb 1;41(2):109-11.

    ObjectiveTo assess retrospectively the effects of different protective methods on brain in ascending aortic aneurysm surgery.MethodsIn 65 patients, aneurysm was dissected to the aortic arch or right arch. To protect brain, deep hypothermic circulatory arrest (DHCA) combined with retrograde cerebral perfusion (RCP) through the superior vena cava (n = 50) and simple DHCA (n = 15) were used during the procedure. Blood samples for lactic acid level from the jugular vein were compared in both groups at different phase, and perfusion blood distribution and oxygen content difference between the perfused and returned blood were measured in some RCP patients.ResultsThe DHCA time was 35.9 +/- 18.8 min (10.0 - 63.0 min) and DHCA + RCP time was 45.5 +/- 17.2 min (16.0 - 81.0 min). The resuscitation time was 7.1 +/- 1.6 h (4.4 - 9.4 h) in DHCA patients and 5.4 +/- 2.2 h (2.0 - 9.0 h) in RCP patients. Operation death was 3/15 in the DHCA group and 1/50 in the RCP patients. Central nervous complication existed in 3/12 of DHCA patients and 1/49 of RCP patients (P < 0.01). The overall survival rate was 96% (RCP) vs 67% (DHCA), central nervous system dysfunction was 20% in DHCA vs 2% in RCP (P < 0.01). The blood lactic acid level increased significantly after reperfusion in DHCA than in RCP. The blood distribution measurement approximated to 20% of the perfused blood returned from arch vessels. Oxygen content between perfused and returned blood showed that oxygen uptake was adequate in the RCP group.ConclusionsThe application of RCP could prolong the safety duration of circulation arrest. Cerebral perfusion may reep the brain cool and flush out particulate and air embolism. Open anastomosis of the aortic arch to the prosthesis can be safely performed. RCP is acceptable for brain protection in clinical practice.

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