"Code Blue" is a term used in hospitals to indicate a medical emergency, specifically when a patient is in need of immediate resuscitation due to cardiac arrest or respiratory failure. When a Code Blue is called, a specialized team of healthcare professionals, including doctors and nurses, quickly responds to provide life-saving interventions. The announcement of a Code Blue typically triggers a rapid response protocol, ensuring that the right equipment and personnel are available. This may include the use of a defibrillator to restore normal heart rhythm and CPR (cardiopulmonary resuscitation) to maintain blood flow until further treatment can be administered.