Which of the following is NOT a sign of respiratory distress?

The choice indicating "sudden loss of consciousness" is not a typical sign of respiratory distress. Respiratory distress generally manifests through observable behaviors and physiological signs that indicate a struggle to breathe or inadequate ventilation. Signs such as using accessory muscles to breathe, rapid and shallow breathing, and grunting during exhalation all reflect the body’s attempt to compensate for inadequate oxygenation or ventilation.

Sudden loss of consciousness, however, usually signifies more severe systemic issues, such as inadequate blood flow to the brain, which can be secondary to many causes, including respiratory failure, but it is not, in itself, a direct indication of respiratory distress. The other indicators are specific responses to respiratory challenges that are commonly taught in clinical assessments for patients in distress.