Lack of oxygen in the brain will cause permanent brain damage in as little as four minutes. Another four to six minutes without the brain receiving blood will result in increased brain damage, coma and then death. In order to reduce the chances of permanent or anoxic brain damage in a person who is unconscious, CPR should be performed until their breathing and heartbeat return or until qualified medical help arrives.
The primary causes that result in an adult not breathing or having a heartbeat are accidents and injuries, excessive bleeding, infection in the bloodstream, near-drowning, drug overdose and abnormal hearth rhythms, and heart attacks that are associated with heart disease. Health issues or accidents such as choking, suffocation, drug use, carbon monoxide poisoning from malfunctioning gas appliances, electrical shock and heart arrhythmia can increase the chances of losing consciousness, which can result in anoxic brain damage.
If a person receives mild to moderate hypoxic brain damage from experiencing any of these conditions and is resuscitated, they may end up suffering from symptoms such as seizures, confusion, headaches, decreased attention span and concentration, poor coordination, occasional loss of consciousness and personality changes or mood swings.
Evidence of brain damage in individuals is detected by running tests such as MRIs, Head CT scans and SPECT scans. Symptoms associated with decreased brain function do not always show up right away and may not appear until several days or weeks after the experience occurred.Learn More
A mixture of food, liquid and digestive juice called chyme enters the small intestine from the stomach and combines with secretions such as enzymes, bicarbonate and bile salts to further break down food, according to the International Foundation for Functional Gastrointestinal Disorders. These enzymes come from the liver and pancreas. Food digests in three distinct parts of the small intestine.Full Answer >
The colon is a part of the digestive system and is responsible for absorbing water from the stool before it exits the body. According to Cleveland Clinic, the colon, which is also known as the large intestine, is where the solidifying and processing of solid wastes takes place with the aid of bacterial flora.Full Answer >
In a normal, healthy heart, the electrical conduction pathway begins with the sinoatrial node receiving an electrical signal, according to the National Heart, Lung, and Blood Institute. Next, the signal moves through the heart and reaches the atrioventricular node. Finally, the signal reaches the bundle of His-Purkinje fibers.Full Answer >
The human gallbladder weighs 2 to 2.5 ounces. It is about 3 to 4 inches long and about 1.5 inch wide. The gallbladder is located just under the liver and aids in digestion and excretion. It is a pear-shaped hollow organ.Full Answer >