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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 ...
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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]
Gerschenkron effect (economic development) (economic systems) (economics and finance) (econometrics) (index numbers) (national accounts)r; Giant magnetoresistive effect (condensed matter physics) (electric and magnetic fields in matter) (quantum electronics) (spintronics) Gibbons–Hawking effect (general relativity)
13 Things That Don't Make Sense; A. ASASSN-V J213939.3-702817.4; Ashen light; B. ... Transient lunar phenomenon; U. Ultra-high-energy cosmic ray; Unidentified flying ...
In English phonology, t-glottalization or t-glottalling is a sound change in certain English dialects and accents, ... when Henry Sweet commented on the phenomenon.
Dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. [1] Sometimes the term chromatic dispersion is used to refer to optics specifically, as opposed to wave propagation in general. A medium having this common property may be termed a dispersive medium.
The π T 's are expected to decay to the heaviest possible quark and lepton pairs. Despite their lower masses, the ρ T 's are wider than in the minimal model and the backgrounds to the π T decays are likely to be insurmountable at a hadron collider. This picture changed with the advent of walking technicolor.