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pro vyhledávání: '"Valmik Bhargava"'
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 270:H1766-H1771
The current concept of ventricular filling in the elasmobranch fish (sharks and rays) is that a subambient pericardial pressure establishes a negative diastolic pressure gradient for the atrium and that ventricular end-diastolic volume is exclusively
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 263:H1675-H1681
We tested the hypothesis that the pericardium, by restricting heart size, limits maximal cardiac output and oxygen consumption. We studied 15 pigs. Five underwent maximal treadmill running before and 14–21 days after thoracotomy and pericardiectomy
Autor:
Valmik Bhargava, Ary L. Goldberger
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 242:H507-H511
Definition of QRS onset and offset is a basic problem in electrocardiography. Current techniques rely either on subjective estimates or on computer algorithms using QRS derivative or spatial vector velocity parameters. We developed a spectral method
Autor:
Valmik Bhargava, Ary L. Goldberger
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 243:H964-H969
The effect of exercise on the QRS power spectrum has not been evaluated. We hypothesized that increased conduction velocity with exercise might selectively increase high-frequency QRS potentials. Using a digital electrocardiograph (ECG) cart, a singl