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Assessment of arteriovenous blood flow during retrograde cerebral perfusion
1Department of Anesthesiology, Baylor College of Medicine and The Methodist Hospital, Houston, TX, USA.
Objective:
This study examined arterial and venous blood flow during retrograde cerebral perfusion (RCP) to quantify what proportion of arterial inflow is not recovered as venous outflow.
Design:
Prospective.
Setting:
Community hospital, university setting, single institution.
Participants:
Twelve patients undergoing reconstructive aortic arch surgery with profound hypothermic circulatory arrest and RCP.
Interventions:
None.
Measurements And Main Results:
RCP arterial inflow and venous outflow measurements were recorded at 2-minute intervals for 10 minutes, averaged, and then compared. Only 44.9%+/-16.3% of RCP inflow returned through the aortic arch. The remainder was not recovered.
Conclusion:
Internal jugular venous valves, sequestration, and shunting may contribute to arterial inflow diversion during RCP.