Cardiopulmonary arrests, also known as sudden cardiac arrests, occur when the heart suddenly stops beating effectively and the lungs fail to provide oxygenated blood to the body. When it comes to synonyms for this term, there are several options to consider. One common alternative is "cardiopulmonary failure," which refers to the same event as a complete loss of both heart and lung function. Another term that may be used is "cardiopulmonary collapse," which highlights the sudden and catastrophic nature of the event. Other options include "cardiorespiratory arrest" and "respiratory cardiac arrest," which describe the simultaneous cessation of breathing and heart function.