Search results
Results from the WOW.Com Content Network
Long QT intervals predispose the patient to an R-on-T phenomenon, wherein the R-wave, representing ventricular depolarization, occurs during the relative refractory period at the end of repolarization (represented by the latter half of the T-wave). An R-on-T can initiate torsades. Sometimes, pathologic T-U waves may be seen in the ECG before ...
There are only 10–20 cases annually in the United States. [1] These cases occur mostly in boys and young men (mean age 15), usually during sports participation. [1] It occurs most frequently in baseball when the hard ball strikes an unprotected chest, although there have been cases of commotio cordis in players using a chest protector. [1]
This page was last edited on 28 December 2021, at 11:30 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The concept of "R on T ectopics" was further brought out by Katz in 1928. [30] This was called the "vulnerable period" by Wiggers and Wegria in 1940, who brought to attention the concept of the danger of premature ventricular beats occurring on a T wave. [citation needed] Another definition of VF was produced by Wiggers in 1940.
Should this article not mention the R-on-T phenomenon, which basically is when a PVC ruins the T wave of the preceding beat, usually causing ventricular fibrillation (and thus risk of cardiac arrest and sudden death)? 70.26.71.233 04:35, 8 December 2010 (UTC)
A phenomenon is any observable occurrence. Phenomena are often, but not always, understood as 'appearances' or ' experiences '. These are themselves sometimes understood as involving qualia .
Bose–Einstein condensation of rotons has been also proposed and studied. [8] Its first detection has been reported in 2018. [9] Under specific conditions the roton minimum gives rise to a crystal solid-like structure called the supersolid, as shown in experiments from 2019.
Solitary wave in a laboratory wave channel. In mathematics and physics, a soliton is a nonlinear, self-reinforcing, localized wave packet that is strongly stable, in that it preserves its shape while propagating freely, at constant velocity, and recovers it even after collisions with other such localized wave packets.