Tatiana Kelil MD, Presenter: Nothing to Disclose

Hansol Kim MD, Abstract Co-Author: Nothing to Disclose

Vincent Michael Levesque MA, Abstract Co-Author: Nothing to Disclose

Daniel Kacher MS, Abstract Co-Author: Nothing to Disclose

Karen Munkley, Abstract Co-Author: Nothing to Disclose

Paul B. Shyn MD, Abstract Co-Author: Nothing to Disclose

1. Basic physics of fluid pressure and flow 2. Factors affecting suction pressure in a body cavity relative to the wall suction source 3. Summary of fluid dynamic considerations pertinent to wall suction-assisted thoracentesis and paracentesis procedures

1. Principles of fluid dynamics a. Poiseuille’s law 2. Factors affecting pressure changes from wall suction source to body cavity a. Tube diameter b. Fluid flow rate c. Fluid viscosity d. Laminar vs. turbulent flow e. Changes in tubing height f. Compliance of the body cavity 3. Results of wall-suction experiments simulating fluid drainage procedures a. Comparison of typical negative pressures generated by wall suction, vacuum bottles, and 60 ml syringes b. Changes in pressure gradients with air or fluid containing tubing c. Changes in pressure gradients over time and as fluid flow decreases and stops d. Rates of fluid drainage relative to suction pressure settings 4. Implications for thoracentesis and paracentesis procedures a. Potential concerns regarding suction-related visceral injuries b. Selecting an appropriate wall suction pressure c. Discontinuing suction when flow stops or symptoms develop

http://abstract.rsna.org/uploads/2014/14008855/14008855_ls82.pdf

Kelil, T, Kim, H, Levesque, V, Kacher, D, Munkley, K, Shyn, P, Wall Suction-assisted Thoracentesis and Paracentesis Procedures: Relevant Principles and Practical Experiments Related to Fluid Dynamics.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14008855.html