Respiratory arrest refers to the condition where breathing completely stops, leading to a dangerous drop in the levels of oxygen in the body. Some of the synonyms that can be used to describe respiratory arrest include apnea, asphyxia, suffocation, cessation of respiration, breathing cessation, and respiratory failure. Often, respiratory arrest is a medical emergency that requires prompt intervention to restore normal breathing and prevent the brain from being starved of oxygen. Treatment for this condition may involve administration of oxygen, mechanical ventilation, and even CPR in some cases. Given the potentially fatal nature of respiratory arrest, it is important to seek medical attention immediately if you suspect someone is experiencing this condition.