Air and blood fluid dynamics: at the interface between engineering and medicine

21st Fluid Mechanics Conference

物理学;力学

Pollard, A.^1 ; Secretain, F.^1 ; Milne, B.^2

Department of Mechanical and Materials Engineering, Queens University, Kingston, ON K7L-3N6, Canada^1

Dept. Anesthesiology, Kingston General Hospital, Queen's University, Kingston, ON K7L-3N6, Canada^2

关键词: Acoustic sound;    Bubble break-up;    Idealized models;    Novel algorithm;    Obstructive sleep apnea;    Open-heart surgery;    Optical coherent tomography;    Surgery planning;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/530/1/012005/pdf
DOI  :  10.1088/1742-6596/530/1/012005

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The flows in the human upper airway and human heart during open heart surgery are considered. Beginning with idealized models of the human upper airway, current methods to extract realistic airway geometries using a novel implementation of optical coherent tomography modality are introduced. Complementary direct numerical simulations are considered that will assist in pre-surgery planning for obstructive sleep apnea. Cardiac air bubbles often arise during open heart surgery. These bubbles are potential emboli that can cause neurological impairment and even death. An experimental programme is outlined that uses acoustic sound to instil bubble surface oscillations that result in bubble breakup. A novel algorithm is introduced that enables a surgical team to obtain real-time in-vivo bubble data to aid cardiac de-airation procedures.