Evaluation of Cerebral and Systemic Vascular Dynamics in Response of Stress.

摘要

The authors have developed and modified transducer techniques for obtaining direct and indirect measurements of the physiological variables under investigation and mathematical techniques for the computer analysis of this data. A 6 Channel recorder has been modified for 6 Channel electrocardiogram recording at rest and during active exercise. The electrocardiogram, apexcardiogram, carotid pulse waves, phonocardiography and blood pressures have been done before and after exercise. In patients with known coronary artery disease, intra-arterial pressures, electrocardiogram, and clinical evidence of cerebral and coronary insufficiency are recorded during the stress by rapid atrial pacing. Two groups of 20 subjects have undergone 20 weeks of exercise for physical conditioning, exercising 1 hour four days a week at 60-70% of maximum pre and post training. Treadmill stress and electrocardiogram, O2 consumption and numerous chemistries were recorded. Physical conditioning increased tolerance, maximum oxygen consumption and recovery rate based on the return of pulse rate to normal.