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Short QT syndrome is a genetic disorder caused by mutations in genes responsible for producing certain ion channels within heart cells. It appears to be inherited in an autosomal dominant pattern. [1] Some genetic variants cause an increased flow of potassium out of the cell, while others reduce the flow of calcium into the cell. [1]
Left axis deviation. The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane. In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between −30° and −90°.
In cardiology, a ventricular escape beat is a self-generated electrical discharge initiated by, and causing contraction of the ventricles of the heart; normally the heart rhythm is begun in the atria of the heart and is subsequently transmitted to the ventricles. The ventricular escape beat follows a long pause in ventricular rhythm and acts to ...
An ST elevation is considered significant if the vertical distance inside the ECG trace and the baseline at a point 0.04 seconds after the J-point is at least 0.1 mV (usually representing 1 mm or 1 small square) in a limb lead or 0.2 mV (2 mm or 2 small squares) in a precordial lead. [2] The baseline is either the PR interval or the TP interval ...
A fusion beat occurs when electrical impulses from different sources act upon the same region of the heart at the same time. [1] If it acts upon the ventricular chambers it is called a ventricular fusion beat, whereas colliding currents in the atrial chambers produce atrial fusion beats . Ventricular fusion beats can occur when the heart's ...
David Jon Gilmour CBE (/ ˈ ɡ ɪ l m ɔː r / GHIL-mor; born 6 March 1946) is an English musician, singer and songwriter, who is a member of the rock band Pink Floyd.He joined as guitarist and co-lead vocalist in 1967, shortly before the departure of founding member Syd Barrett.
A brain–computer interface (BCI), sometimes called a brain–machine interface (BMI) or smartbrain, is a direct communication pathway between the brain's electrical activity and an external device, most commonly a computer or robotic limb.
A Hydra-Matic Drive transmission, produced between 1939 and 1956, on display at the Ypsilanti Automotive Heritage Museum. Hydramatic (also known as Hydra-Matic) is an automatic transmission developed by both General Motors ' Cadillac and Oldsmobile divisions. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was the first mass ...