Brain atrophy is shrinking of the brain caused by the loss of its cells, called neurons.Two types of brain atrophy can occur; generalized and focal. Generalized atrophy refers to neuron loss throughout the entire brain, and focal atrophy refers to neuron loss in a specific brain region.rain atrophy is shrinking of the brain caused by the loss of its cells, called neurons.
A cardiac arrest occurs when your heart suddenly stops beating. The heart functions through electrical pulses, and when those pulses are interrupted it can cause an irregular heartbeat or cardiac arrest. The cause of cardiac arrest is an electrical problem. It does not have anything to do with your arteriesâ functions. cardiac arrest occurs when your heart suddenly stops beating. The heart functions through electrical pulses, and when those pulses are interrupted it can cause an irregular heartbeat or cardiac arrest. The cause of cardiac arrest is an electrical problem. It does not have anything to do with your arteriesâ functions.
Defibrillation is performed to correct life-threatening arrhythmias of the heart including ventricular fibrillation and cardiac arrest. In cardiac emergencies it should be performed immediately after identifying that the patient is experiencing an arrhythmia, indicated by lack of pulse and unresponsiveness.