JBL EMT Practice Exam

Which of the following is most characteristic of adequate breathing in an adult?

1. Cool, clammy skin and retractions above the clavicles

2. Respirations of 20 breaths/min and bilateral chest movement

3. Respirations of 30 breaths/min and reduced tidal volume

4. Use of the accessory muscles in the neck and cyanosis

The correct answer is: Cool, clammy skin and retractions above the clavicles

The most characteristic feature of adequate breathing in an adult is bilateral chest movement and respirations of 20 breaths per minute. This indicates that the person is exchanging air properly and maintaining a normal respiratory rate. Options C and D describe abnormal breathing patterns that indicate respiratory distress, while option A describes signs of inadequate breathing, such as retractions above the clavicles and cool, clammy skin.