Postural Effects on the Bruit and Right-to-Left Shunt of Pulmonary Arteriovenous Fistula

Influência da variação dos decúbitos laterais na deposição pulmonar de aerossol

“…This preferential ventilation may result from a combination of three mechanical elements: gravity, the relative lowering of the mediastinum toward the support plane and the cranial position of the inferolateral hemidiaphragm caused by the hydrostatic pressure of the viscera on its lower face [5][6][7][8][9] .…”

“…Lateral decubitus is the corporal position that results in the greatest changes regarding static volume, regional ventilation, perfusion and pulmonary diffusion capacity [5][6][7][8] . This occurs due to the craniocaudal direction of the gravity vector and results in a hydrostatic pressure gradient between lungs [5][6][7][8] .…”

“…This occurs due to the craniocaudal direction of the gravity vector and results in a hydrostatic pressure gradient between lungs [5][6][7][8] .…”

“…This behavior is due to the vertical pleural pressure gradient, which causes a decrease in lung volume and high compliance in the dependent lung [5][6][7][8][9][10] .…”