Tagged: ventilation-perfusion ratio

July 24, 2021

Ventilation-perfusion relationships and why is ventilation higher at the base of the lung

The function of respiration is to keep blood gases at a normal level through a balance between 2 main mechanisms: ventilation and perfusion. Under normal resting conditions, alveolar ventilation and pulmonary blood flow are...

Medecine

July 22, 2021

Regional difference in ventilation, Pulmonary circulation, Shunt and Lung perfusion zones

Global ventilation of the lungs is expressed as the minute volume, normally around 4L/min, This is affected by multiple factors, most notably pregnancy, PaCO2, PaO2, pH, body temperature, exercise, and blood pressure, Global perfusion...