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Respiratory Ventilation Definition

VENTILATION is how gases get to the alveoli and thus throughout our bodies.

RESPIRATORY VENTILATION, which can be natural/spontaneous (as in breathing) or artificial (as in assisted mechanical ventilation) is the movement of AIR between the alveoli (lungs) and the environment.

This is determined and measured as the frequency of breathing/respiratory rate multiplied by the volume of every breath. Respiratory ventilation maintains control of normal concentrations of carbon dioxide and oxygen in the alveolar gas and, through the mechanism of diffusion, also manages normal partial pressures of carbon dioxide and oxygen in the capillary blood flow.

RESPIRATORY MINUTE VENTILATION is the volume of gas ventilated in one minute and is represented as:
MINUTE VENTILATION = BREATHS PER MINUTE X TIDAL VOLUME

ALVEOLAR VENTILATION is the volume of gas assessable to the alveolar surface per minute and is shown as
ALVEOLAR VENTILATION = BREATHS PER MINUTE X (TIDAL VOLUME–DEAD SPACE)