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Selective convective brain cooling during hypothermic cardiopulmonary bypass in dogs  C.Thomas Wass, MD, Julian R Waggoner, MD, David G Cable, MD, Hartzell.

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Presentation on theme: "Selective convective brain cooling during hypothermic cardiopulmonary bypass in dogs  C.Thomas Wass, MD, Julian R Waggoner, MD, David G Cable, MD, Hartzell."— Presentation transcript:

1 Selective convective brain cooling during hypothermic cardiopulmonary bypass in dogs 
C.Thomas Wass, MD, Julian R Waggoner, MD, David G Cable, MD, Hartzell V Schaff, MD, Darrell R Schroeder, William L Lanier, MD  The Annals of Thoracic Surgery  Volume 66, Issue 6, Pages (December 1998) DOI: /S (98)

2 Fig 1 Esophageal temperature, systemic mean arterial blood pressure (MAP), and arterial carbon dioxide tension (PaCO2) during simultaneous hypothermic cardiopulmonary bypass and forced air cerebral cooling (air temperature of approximately 13°C). During cardiopulmonary bypass, there were no significant differences between pentobarbital- and halothane-anesthetized groups (n = 8 per group). Vertical bars represent 1.0 standard deviation. The Annals of Thoracic Surgery  , DOI: ( /S (98) )

3 Fig 2 Brain-to-core temperature gradients in pentobarbital- or halothane-anesthetized dogs undergoing simultaneous hypothermic cardiopulmonary bypass and forced air cerebral cooling (to approximately 13°C) (n = 8 per group). Core temperature was assessed using a flexible vinyl thermistor placed in the esophagus to the level of the right atrium. Regional brain temperatures were measured using thermistors placed bilaterally (1) in the parietal epidural space, (2) 1 cm beneath the dura, and (3) 2 cm beneath the dura. Resulting core-to-brain temperature gradients were calculated by subtracting core from regional brain temperature (derived by averaging right and left values at each brain temperature monitoring site). Thus, a negative value denotes that the cranial measurement site was cooler than the core. The Annals of Thoracic Surgery  , DOI: ( /S (98) )

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