In a pressure injury, a localized area of injury to the skin may develop when soft tissue is compressed between a bony prominence and an external surface for a long period of time.
Pressure ulcers are skin breakdowns that occur in areas of the body that are compressed from prolonged bed rest, wheelchair use, or cast use. When you are immobile, unconscious, confined to bed, or unable to feel pain, pressure injuries may occur. When pressure permanently cuts off the blood supply to the skin, a pressure injury is one result. Skin cells die when there is inadequate blood flow to them. This first manifests as a painful, red area. Anyone can develop a pressure ulcer, but those over the age of 70 are more likely to struggle with mobility and have skin that is more vulnerable to injury from dehydration and other factors.
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Answer:
It eliminates the abnormal heart rate.
Explanation:
The Chain of Survival should be applied when a patient is under cardiac arrest.
Cardiac arrest is mostly caused due to abnormal electrical activity in the victim's heart. This can result in ventricular fibrillation or pulseless ventricular tachycardia which, if not treated, could cause death.
An automated external defibrillator (AED) is designed to restore the heart's regular activity, by providing a heavy electric shock to the patient's chest. This a vital step in the chain of survival as it greatly increases the chances of survival.
