Which of the following indicates a state of respiratory distress?

A state of respiratory distress is often indicated by skin discoloration, specifically cyanosis. Cyanosis refers to a bluish tint observed in the skin, particularly around the lips, fingertips, and face. This effect occurs when there is insufficient oxygen in the blood, which can result from impaired respiratory function or inadequate ventilation.

When the body is not getting enough oxygen, it struggles to maintain normal physiological functions, leading to visible signs such as cyanosis. Recognizing this condition is crucial for emergency responders, as it signals a potentially life-threatening situation that requires immediate intervention to restore adequate oxygenation and respiratory stability.

While the presence of a cough, an increased body temperature, and a rapid heart rate can be associated with various medical conditions, they do not specifically indicate respiratory distress in the same direct manner as cyanosis does. A cough might point to an issue in the respiratory system but is not definitive on its own. An increased body temperature could suggest infection, and a rapid heart rate could arise from various causes unrelated to respiration. Thus, cyanosis is a clear and critical marker of respiratory distress that calls for prompt medical evaluation and care.