BACKGROUND: We studied the effect of partial aortic occlusion on cerebral perfusion and cardiac performance using the intra-aortic NeuroFlo catheter. METHODS: Adult pigs were instrumented to determine cardiac parameters; unique isotope-labeled microspheres were used to determine cerebral blood flow (CBF) before, during and after sequential partial aortic occlusion. RESULTS: Six pigs were studied; there was no relevant change in cardiac output, and the desired pressure drop of 10-15 mm Hg across the balloons was achieved. CBF increased significantly with inflation of the suprarenal balloon and remained elevated 90 min after deflation. CONCLUSIONS: Partial aortic occlusion with the NeuroFlo catheter significantly increased cerebral perfusion without adversely affecting cardiac performance. Copyright 2009 S. Karger AG, Basel.
BACKGROUND: We studied the effect of partial aortic occlusion on cerebral perfusion and cardiac performance using the intra-aortic NeuroFlo catheter. METHODS: Adult pigs were instrumented to determine cardiac parameters; unique isotope-labeled microspheres were used to determine cerebral blood flow (CBF) before, during and after sequential partial aortic occlusion. RESULTS: Six pigs were studied; there was no relevant change in cardiac output, and the desired pressure drop of 10-15 mm Hg across the balloons was achieved. CBF increased significantly with inflation of the suprarenal balloon and remained elevated 90 min after deflation. CONCLUSIONS: Partial aortic occlusion with the NeuroFlo catheter significantly increased cerebral perfusion without adversely affecting cardiac performance. Copyright 2009 S. Karger AG, Basel.
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