What is the approximate tidal volume of a healthy adult at rest?

The approximate tidal volume of a healthy adult at rest is around 500 mL. Tidal volume refers to the amount of air inhaled or exhaled during a normal breath, and this value is considered standard for most adults in a resting state.

In a typical adult, this volume is sufficient to meet the body’s metabolic demands without excess work or effort. This measurement can vary based on factors such as body size, age, and health status; however, 500 mL is the average value used in respiratory physiology to represent normal breathing in healthy adults.

Understanding tidal volume is crucial in respiratory care, as it helps healthcare professionals assess a patient's breathing pattern and determine necessary interventions. This knowledge is also important for the settings on mechanical ventilators, which need to be adjusted according to the patient's specific tidal volume needs.