Hemodynamics

Supine position

Pulmonary vein

Pulmonary artery

Cardiology

Right pulmonary artery

Anesthesia

Venous blood

Internal medicine

Medicine

Blood flow

Blood volume

Atrial fibrillation

Lung

Journal of Cardiovascular Magnetic Resonance

Body position can be optimized for pulmonary ventilation/perfusion matching during surgery and intensive care. However, positional effects upon distribution of pulmonary blood flow and vascular distensibility measured as the pulmonary blood volume variation have not been quantitatively characterized. In order to explore the potential clinical utility of body position as a modulator of pulmonary hemodynamics, we aimed to characterize gravitational effects upon distribution of pulmonary blood flow, pulmonary vascular distension, and pulmonary vascular distensibility.

Supine, prone, right and left gravitational effects on human pulmonary circulation