Retrograde brain perfusion beyond the venous valves

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Presentation transcript:

Retrograde brain perfusion beyond the venous valves Takao Watanabe, MD, Yoshiyuki Iijima, MD, Kazuo Abe, MD, Hiromasa Abe, MD, Hiroyuki Saito, MD, Yoshiki Naruke, MD, Masahiko Washio, MD The Journal of Thoracic and Cardiovascular Surgery Volume 111, Issue 1, Pages 36-44 (January 1996) DOI: 10.1016/S0022-5223(96)70399-9 Copyright © 1996 Mosby, Inc. Terms and Conditions

Fig. 1 Pressure-regulated circuit for retrograde brain perfusion through sagittal sinus and the SVC. The Journal of Thoracic and Cardiovascular Surgery 1996 111, 36-44DOI: (10.1016/S0022-5223(96)70399-9) Copyright © 1996 Mosby, Inc. Terms and Conditions

Fig. 2 PH standard curve obtained from pH-adjusted brain homogenate. The relationship between the pH and the absorption ratio at 535 nm and 440 nm was linear. The Journal of Thoracic and Cardiovascular Surgery 1996 111, 36-44DOI: (10.1016/S0022-5223(96)70399-9) Copyright © 1996 Mosby, Inc. Terms and Conditions

Fig. 3 Cerebral tissue blood flow throughout the experiment in group 1 (n = 21). It was 0.85 ± 0.66 ml/100 gm/min during the solitary perfusion through the SVC. Retrograde perfusion (RP) through the sagittal sinus and the SVC increased the blood flow to a stable value of 8.98 ± 2.02 ml/100 gm/min. CA, Circulatory arrest; SVC-P, solitary SVC perfusion; RP, retrograde brain perfusion. The Journal of Thoracic and Cardiovascular Surgery 1996 111, 36-44DOI: (10.1016/S0022-5223(96)70399-9) Copyright © 1996 Mosby, Inc. Terms and Conditions

Fig. 4 Cerebral tissue blood flow as a function of driving pressure between the sagittal sinus and the aorta obtained from all 21 dogs in group 1. Antegrade values were obtained at the end of the core-cooling perfusion, also from 21 dogs in group 1. Ante, Antegrade; Retro, retrograde; Ln, logarithm (e); DP, driving pressure. The Journal of Thoracic and Cardiovascular Surgery 1996 111, 36-44DOI: (10.1016/S0022-5223(96)70399-9) Copyright © 1996 Mosby, Inc. Terms and Conditions

Fig. 5 Regional changes in intracellular pH. The pH after retrograde brain perfusion were significantly higher than after circulatory arrest. RP90, After 90 minutes of retrograde brain perfusion; CA60, at 60 minutes of circulatory arrest; CA90, at 90 minutes of circulatory arrest. The Journal of Thoracic and Cardiovascular Surgery 1996 111, 36-44DOI: (10.1016/S0022-5223(96)70399-9) Copyright © 1996 Mosby, Inc. Terms and Conditions