Liquefied natural gas, or LNG, is natural gas in its liquid form. LNG is produced by purifying natural gas and super-cooling it to -260Â°F to turn it into a liquid. During the process known as liquefaction, natural gas is cooled below its boiling point, removing most of the extraneous compounds found in the fuel.
Ventricular tachycardia (V-tach, often abbreviated VT) refers to a rhythm that arises from the ventricles causing the heart to beat at a rate faster than 100 beats per minute. The ventricular rate is usually above 120 beats/min and may exceed 250 beats/min.
What is the normal heart rhythm? It is called sinus rhythm, because it originates in the sinus (or sinoatrial) node, the heart's natural pacemaker, and it then spreads through the heart's four pumping chambers, first the two (right and left) atria, then through the atrioventricular node and into the two (right and left) ventricles.