Pulmonary & Respiratory Medicine

Thomas L Miller

Publications

• Research Article
  Computational Fluid Dynamics Modeling of Extrathoracic Airway Flush: Evaluation of High Flow Nasal Cannula Design Elements
  Author(s): Thomas L Miller, Babak Saberi and Shadi SaberiThomas L Miller, Babak Saberi and Shadi Saberi
  
  Objective: High flow nasal cannula (HFNC) is an evolving respiratory therapy whereby high flow rates of conditioned breathing gas are delivered into the nasal cavity to purge anatomical dead space of CO2 rich expired gas. The aim of this project was to create a computational fluid dynamics (CFD) model to evaluate the fluid patterns in the human nasal and pharyngeal cavities with HFNC application, and quantify time to purge for two cannula configurations. Methods: Three-dimensional geometry of the human airway was used to define the extrathoracic dead space and the two cannula designs tested incorporate large vs small bore nasal prong configurations (Vapotherm, Exeter, NH, USA). The fluid flow simulations were performed using FLOW-3D software, set up for a cannula flow rate of 20 L·min-1 and run until steady state. Results: Basic flow patterns w.. Read More»
  DOI: 10.4172/2161-105X.1000376

  Abstract PDF