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(1146)

Podcast #399: Hunting for pancreatitis

Podcast #399: Hunting for pancreatitis

Author: Michael Hunt, MD Educational Pearls: Alcohol and gallstones are most common causes of pancreatitis Diagnosis is not simply based on lipase alone - must have at least two the the three criteri...

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Podcast #398:  Who is gonna fail your antibiotic plan?

Podcast #398: Who is gonna fail your antibiotic plan?

Author: Erik Verzemnieks, MD Educational Pearls: Recent study provides at least some evidence to help predict antibiotic failure for cellulitis, which is not necessarily straight forward Intuitive ri...

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Podcast #397: Oh… Pharyngeal Trauma

Podcast #397: Oh… Pharyngeal Trauma

Author: Aaron Lessen, MD Educational Pearls: Injuries from penetrating pharyngeal trauma are often subtle on examination in children Potentially serious complications including carotid artery inju...

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Podcast #396: Oncologic Emergencies

Podcast #396: Oncologic Emergencies

Author: Rachel Brady, MD Educational Pearls: Hypercalcemia of malignancy: Hypercalcemia of malignancy can present with lethargy, muscle weakness, hyperreflexia, altered mental status, cardiac dysrhyt...

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Podcast #395:  Aspirin for everyone!

Podcast #395: Aspirin for everyone!

Author: Aaron Lessen, MD Educational Pearls: In patients without indications for aspirin, three recent studies looked at prevention of several end points in the elderly These showed no benefit in p...

22 Okt 20182min

Podcast #394: Myths of Medication Assisted Treatment

Podcast #394: Myths of Medication Assisted Treatment

Author: Katie Sprinkle, MD Educational Pearls: Medication Assisted Treatment (MAT) is the treatment of addiction with medications, commonly used for opioid use disorders A long held belief is MAT sim...

20 Okt 20185min

Podcast #393: Neonatal Vomiting

Podcast #393: Neonatal Vomiting

Author: Peter Bakes, MD Educational Pearls: Important historical information to elicit is the birth history, feeding habits, stooling habits, associated symptoms, presence of bile, and presence of ...

17 Okt 20185min

Podcast # 392: Maggot Therapy

Podcast # 392: Maggot Therapy

Author: Jared Scott, MD Educational Pearls: Interest started as it was noticed soldiers who had wounds infected with maggots had better outcomes than those without maggots Studies have shown that wou...

15 Okt 20183min

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