What is the normal respiratory rate for an adult?

The normal respiratory rate for an adult is generally considered to be between 12 and 20 breaths per minute. This range reflects the typical resting respiratory rate in a healthy adult at rest, where the body requires a steady intake of oxygen and expulsion of carbon dioxide to maintain homeostasis.

Values less than 12 breaths per minute may indicate bradypnea, which can occur in various conditions including drug overdoses or respiratory depression. Conversely, a respiratory rate exceeding 20 breaths per minute, called tachypnea, can indicate conditions such as fever, anxiety, or respiratory distress. Therefore, understanding the normal range is crucial for identifying potential deviations that may signal underlying health issues.