Which of the following is considered a normal respiratory rate for adults?

The normal respiratory rate for adults typically ranges from 12 to 18 breaths per minute. This range is established based on extensive clinical observations and studies, indicating that this is the optimal breathing rate for maintaining adequate oxygen supply and carbon dioxide removal during restful states. Breathing at this rate is associated with normal metabolic functioning and is an essential parameter in assessing respiratory health.

Rates below 12 breaths per minute may indicate bradypnea, which is often associated with respiratory depression or other health issues, while rates above 18 breaths per minute might suggest tachypnea, indicating stress, anxiety, pain, or respiratory distress. Understanding and recognizing the normal range is crucial for respiratory care professionals, as deviations can be indicative of underlying health conditions that require further assessment and intervention.