Respiratory rate
The number of breaths per minute or, more formally, the number of movements indicative of inspiration and expiration per unit time.
In practice, the respiratory rate is usually determined by counting the number of times the chest rises or falls per minute.
By whatever means, the aim is to determine if the respirations are normal, abnormally fast (tachypnea), abnormally slow (bradypnea), or nonexistent (apnea)