When the breathing effort ceases completely, what condition is occurring?

• A. Respiratory distress
• B. Respiratory failure
• C. Respiratory arrest
• D. Insulin shock

Answer: (C)

When breathing stops completely, the person is in respiratory arrest. No air moves in or out, so there is no gas exchange—oxygen isn’t reaching tissues and carbon dioxide isn’t being removed. This leads to rapid loss of consciousness and can be fatal within minutes unless ventilation is restored. This differs from respiratory distress, where breathing is difficult or labored but still happening, and from respiratory failure, where ventilation is inadequate to meet metabolic needs even though some breaths may occur. Insulin shock is unrelated to breathing and involves low blood sugar. In practice, respond by providing airway and breathing support immediately (rescue breathing if the person has a pulse, or CPR if there is no pulse).