| Abstrakt: |
The pressure wave form in the heart and central blood vessels of the unanaesthetized ox has been examined, using an intravascular pressure transducer which eliminated artifacts arising from long fluid-filled catheters. Considerable distortion of the pressure record occurred in the hyperthermic panting animal. Evidence was obtained that the distortion was of respiratory origin. It is suggested that the observed changes during panting might alter the filling of, and ejection of blood from, the heart, as well as the pressure gradients and blood flow at the periphery. |
