Lymph Flow In Instrumented Dogs Varies With Exercise Intensity

Correlation of maximum aortic and carotid flow acceleration in chronically instrumented dogs.

Peak flow acceleration measured in the common carotid artery was compared with peak flow acceleration measured in the ascending aorta of five chronically instrumented dogs. Electromagnetic flow sensors, myocardial electrocardiographic leads, right atrial catheters, and coronary occluders were implanted through an incision of the chest at the fourth intercostal space and a ventral midline incisi...

Human Perception of Fear in Dogs Varies According to Experience with Dogs

To investigate the role of experience in humans' perception of emotion using canine visual signals, we asked adults with various levels of dog experience to interpret the emotions of dogs displayed in videos. The video stimuli had been pre-categorized by an expert panel of dog behavior professionals as showing examples of happy or fearful dog behavior. In a sample of 2,163 participants, the lev...

Acetone Response with Exercise Intensity

Right coronary autoregulation in conscious, chronically instrumented dogs.

Right coronary (RC) autoregulation and right ventricular (RV) function were assessed in conscious dogs, chronically instrumented to measure RC flow and RC pressure (RCP) as a hydraulic occluder on the RC was inflated. Dogs were then anesthetized, and RC autoregulation and RV function were again assessed. In the conscious state, moderate RC autoregulation was present with closed loop gains (Gc) ...

Regional myocardial blood flow during exercise in dogs with chronic left ventricular hypertrophy.

We compared the response of myocardial blood flow to exercise in normal dogs and in dogs with left ventricular hypertrophy (LVH) produced by banding the ascending aorta at 6-9 weeks of age. Blood flow was measured with 15-fim microspheres after the animals with LVH had reached adulthood when left ventricular:body weight ratios were approximately 80% greater than normal. During resting condition...