Podcast #268: Poiseuille's Law

Podcast #268: Poiseuille's Law

Author: Dave Rosenberg, M.D.

Educational Pearls

  • Poiseuille's Law addresses the flow of a fluid through a tube.
  • Many common ED presentations involve alterations in flow: asthma, MI, ischemic stroke, etc.
  • According to the law, flow increases with the 4th power of the radius. That is to say, doubling the radius of the tube will increase the flow by 16x.
  • Therefore, in situations that require re-opening of an anatomic tube (artery, airway), small changes in the size of the opening will result in dramatic effects.

References: https://www.openanesthesia.org/poiseuilles_law_iv_fluids/

Episoder(1149)

Podcast #197: Ashman Phenomenon

Podcast #197: Ashman Phenomenon

Author: Dylan Luyten M.D. Educational Pearls: Ashman's Phenomenon occurs in the setting atrial fibrillation and mimics ventricular tachycardia, but is harmless. On ECG, the pattern of Ashman Phenomen...

30 Apr 20171min

Podcast #196: DVT and May-Thurner Syndrome

Podcast #196: DVT and May-Thurner Syndrome

Author: Samuel Killian M.D. Educational Pearls: Lower extremity DVTs are extremely common. There are more left lower extremity DVT due to anatomical variation. May-Thurner Syndrome is a form of anato...

28 Apr 20172min

Podcast #195: How to Properly Inject Heroin

Podcast #195: How to Properly Inject Heroin

Author: Don Stader, M.D Educational Pearls: It is important for providers to know how to use IV drugs properly so that they can instruct their patients on how to avoid injury. Heroin use is increasin...

26 Apr 20177min

Podcast #194: Atruamatic ICH

Podcast #194: Atruamatic ICH

Author: Peter Bakes, M.D Educational Pearls Intracerebral hemorrhage is an intracranial bleed within the brain tissue or ventricles. Subarachnoid aneurysm causes about 50% of all ICH. Amyloid deposit...

24 Apr 20179min

Podcast #193: The Quick Wee

Podcast #193: The Quick Wee

Author: JP Brewer M.D. Educational Pearls: The "Quick Wee" was a method to get urine out of infants who need to have a UA in the Emergency Department. A randomized-controlled experiment was done with...

22 Apr 20172min

Podcast #192: Back Fat Hernia

Podcast #192: Back Fat Hernia

Author: Jared Scott M.D. Educational Pearls: There are two anatomical triangles on the back, the inferior lumbar triangle and the superior lumbar triangle. Herniation occurs whenever something moves ...

20 Apr 20173min

Podcast #191: Blunt Cervical Trauma

Podcast #191: Blunt Cervical Trauma

Author: Chris Holmes M.D. Educational Pearls: Mechanism of injury involves hyperextension/hyperflexion Pathophysiology: inside of the arteries in the neck becomes disrupted, similar to a dissection. ...

18 Apr 20172min

Deep Dive #2: Biological Terrorism

Deep Dive #2: Biological Terrorism

Author: Michael Hunt M.D. Dr. Hunt shares his wealth of experience with biological terrorism over the course of his career.

16 Apr 201728min

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