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The R-on-T phenomenon is the superimposition of a premature ventricular contraction on the T wave of a preceding heart beat. Studies suggest that R-on-T phenomenon is likely to start a sustained ventricular tachycardia and ventricular fibrillation. [21]
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.
Commotio cordis (Latin, "agitation / disruption of the heart") is a rare disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region) at a critical instant during the cycle of a heartbeat. [1]
R. Regional Acceleratory Phenomenon; T. Tomato effect This page was last edited on 9 November 2024, at 16:21 (UTC). Text is available under the Creative Commons ...
CREST syndrome, also known as the limited cutaneous form of systemic sclerosis (lcSSc), is a multisystem connective tissue disorder.The acronym "CREST" refers to the five main features: calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia.
William James was the first psychologist to describe the tip of the tongue phenomenon, although he did not label it as such. The term "tip of the tongue" is borrowed from colloquial usage, [2] and possibly a calque from the French phrase avoir le mot sur le bout de la langue ("having the word on the tip of the tongue").
The number one threat to beachgoers is not sharks, jellyfish, or any undersea creature. In fact, the greatest threat comes from the water itself. Rip currents, which can unexpectedly pull ...
Fig. 1: Underwater plants in a fish tank, and their inverted images (top) formed by total internal reflection in the water–air surface. In physics, total internal reflection (TIR) is the phenomenon in which waves arriving at the interface (boundary) from one medium to another (e.g., from water to air) are not refracted into the second ("external") medium, but completely reflected back into ...