Life support refers to medical interventions or technologies that sustain a person's life when they are unable to do so on their own. This can include providing oxygen, regulating blood pressure, supporting heart function, and assisting with breathing. Life support is commonly used in emergency situations, such as during surgery, after a severe injury, or in cases of respiratory failure or cardiac arrest. The goal of life support is to stabilize a patient's vital functions and give their body time to heal or recover. The use of life support systems requires specialized training and expertise to ensure the safety and well-being of the patient.