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/

Jaksot(1146)

Podcast # 431: Medication Errors

Podcast # 431: Medication Errors

Author: Rachel Brady, MD Educational Pearls: Medication errors are estimated to be the 3rd leading cause of death A 2016 study estimated 250,000 errors occur per year, with 7000-9000 leading to death...

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Podcast # 430: Humeral IO

Podcast # 430: Humeral IO

Author: Aaron Lessen, MD Educational Pearls: Choose the longest needle for the humeral IO Internally rotate and adduct the patients hand (resting on umbilicus) for best access to the site Aim 1 cm su...

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Podcast # 429: Oldschool Syphilis Treatment

Podcast # 429: Oldschool Syphilis Treatment

Author: Chris Holmes, MD Educational Pearls: In WWI, the 2nd leading cause of soldier disability were STDs. An early treatment of syphilis included topical and inhaled mercury Bloodletting, vitriol, ...

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Podcast # 428: Severe Hypothyroidism

Podcast # 428: Severe Hypothyroidism

Author: Gretchen Hinson, MD Educational Pearls: Clinical manifestations of severe hypothyroidism may include: Pale, cool, diaphoretic skin Myxedema is the non-pitting edema seen in hypothyroidism Hy...

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Podcast # 427: Cookie Dough is Delicious

Podcast # 427: Cookie Dough is Delicious

Author: Eric Miller, MD Educational Pearls: Recent CDC statement warms against consumption of cookie dough Two common ingredients can pose risk: eggs and flour Flour in dough is a raw agricultural ...

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Podcast # 426: Ho Ho - Oh No!

Podcast # 426: Ho Ho - Oh No!

Author: Katrina Iverson, MD Educational Pearls: The winter holiday months present a unique picture of patient presentations to the emergency department Some of the unique presentations include: Chi...

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Podcast # 425: Oseltamivir Efficacy in Children

Podcast # 425: Oseltamivir Efficacy in Children

Author: Aaron Lessen, MD Educational Pearls: Recent meta-analysis reviewed efficacy oseltamivir (Tamiflu) in pediatric populations treated for influenza, showing an 18 hour reduction in duration of i...

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Podcast # 424: Hunting for Measles

Podcast # 424: Hunting for Measles

Author: Mike Hunt, MD Educational Pearls: Measles is highly contagious and successfully infects 90% of those at risk exposed to the virus. 10 day prodrome where patients are asymptomatic. 3 day perio...

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