Cardioplegia

Cardiac arrest or cardioplegia is a term used in medicine for the no longer beating heart. A distinction must be:

Spontaneous cardiac arrest due to ventricular fibrillation, asystole or electromechanical dissociation, which causes a cardiac arrest and leads to death if no cardiopulmonary resuscitation ( CPR ) is performed, and
Artificially guided ( induced or pharmacological ) cardiac arrest as part of an operation that is triggered by the injection of cardioplegic solution (or kardiopleger solution) into the coronary arteries. He lowers the oxygen demand of the heart muscle of about 10 to about 0.05 milliliters per 100 grams of heart tissue per minute and allows operations with great precision at no more beating heart (eg, bypass surgery ). Cardioplegic solutions are composed pharmacologically different, usually contain a lot of potassium and magnesium, and are freezing cold (about 4 ° C) applied. The function of the circuit is maintained during the artificial cardiac standstill by a heart-lung machine.

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