What is the normal range for adult respiratory rate?

The normal respiratory rate for adults typically falls within the range of 12 to 20 breaths per minute. This range is established based on average physiological responses at rest in healthy adults.

Respiratory rate is a vital sign that reflects the number of breaths taken per minute and is an important indicator of a person's respiratory and overall health. Rates below or above this normal range can suggest underlying medical conditions. A respiratory rate lower than 12 breaths per minute could indicate bradypnea, which may result from conditions such as drug overdose or respiratory failure. Conversely, a rate higher than 20 breaths per minute suggests tachypnea, which might be seen in cases of anxiety, fever, or respiratory illnesses.

Understanding the normal range is essential for assessing patient status and determining when further evaluation or intervention may be needed. The other ranges provided do not align with established clinical guidelines for adult respiratory rates, thus supporting the selection of the correct range of 12 to 20 breaths per minute.