Defibrillation is a treatment for life-threatening cardiac dysrhythmias, specifically ventricular fibrillation (VF) and non-perfusing ventricular tachycardia (VT). A defibrillator delivers a dose of electric current (often called a countershock) to the heart. This depolarizes a large amount of the heart muscle, ending the dysrhythmia. Subsequently, the body's natural pacemaker in the sinoatrial node of the heart is able to re-establish normal sinus rhythm.
Benzocaine is a local anesthetic commonly used as a topical pain reliever or in cough drops. It is the active ingredient in many over-the-counter anesthetic ointments such as products for oral ulcers.
Benzene is one of a small number of industrial chemicals that is recognized as a known human carcinogen. Benzene is especially toxic to the blood-forming organs, i.e., the bone marrow and other organs that can produce blood cells.hat is Benzene? Benzene is the simplest aromatic hydrocarbon; it has 6 carbon atoms and 6 hydrogen atoms in a hexagonal (ring) structure. Discovered by the English scientist Michael Faraday in 1825, it was named benzene in 1845 by A.W. von Hofmann, the German chemist, who detected it in coal tar.