The T Deflection of Isolated Mammalian Heart Muscle Electrogram

The T deflection of isolated mammalian heart muscle electrogram.

Both bipolar and unipolar electrograms recorded from well-oxygenated isolated papillary muscle preparations consist of R and T deflections in the same direction. The T is inverted by anoxia, rapid late, and injury. When cut linear strips of ventricular muscle are observed for many hours, during which time they presumably recover from the initial injury, the T deflection becomes upright in most ...

Contractility in isolated mammalian heart muscle after acid-base changes.

effect of low temperature on isolated mammalian heart

effect of perfusion with low temperature locke solution on the isolated hearts of adult rabbits and mongrel puppies was studied. the study showed no arrhythmias or myocardial fibrillation at low temperatures in the isolated mammalian heart.

A novel isolated dual perfusion/superfusion heart model for physiological and pharmacological evaluation of mammalian heart preparations

Abstract Introduction: Isolated perfused heart models such as perfusion and superfusion are commonly used for mammalian heart research. However, there are several fundamental limitations in the current techniques. In perfusion model, a suitable cannula is connected to the aorta and the perfusion is retrogradely performed. But, electrode displacement is a potential unwanted event resulted fr...

The Regenerative Capacity of Mammalian Heart Muscle.

King in 1940, in this journal, described appearances that he believed to be those of myocardial regeneration in a case where death had occurred four days after a stab wound of the chest. A review of the literature, however, shows the opinion most generally held is that hyperplasia of cardiac muscle does not occur. Another consideration prompted the present study: Le Gros Clark (1946) showed tha...