Podcast #249: D-Dimer

Podcast #249: D-Dimer

Author: Michael Hunt, M.D.

Educational Pearls

  • In the recent YEARS study, investigators checked every patient with suspicion for PE with a D-dimer, using a modified Wells score for risk stratification. The goal of the study was to show that CT scan usage could safely reduced using this screening method.
  • The Wells Criteria measures they used to stratify risk were: PE mostly likely dx, hemoptysis, and evidence of DVT. If the d-dimer was 1, but the patient had none of the Wells criteria, the patient did not get a CT. If the patient had any of the criteria, but the d-dimer was only 0.5, the patient did not get a CT scan.
  • The investigators reduced CT usage by 14% using the new criteria, with no significant increase in morbidity and mortality.

References: van der Hulle et al. Simplified diagnostic management of suspected pulmonary embolism (the YEARS study): a prospective, multicentre, cohort study. The Lancet. 2017

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Podcast #189: Caffeine

Podcast #189: Caffeine

Author: Donald Stader M.D. Educational Pearls: Coffee originates from Ethiopia. Its "active ingredient" is caffeine. Caffeine is a xanthine alkaloid used in medicine to control headache and as a neo...

12 Apr 20173min

Podcast #188: Monoarthritis

Podcast #188: Monoarthritis

Author: Peter Bakes M.D. Educational Pearls: Some common causes of monoarticular arthritis include: crystal arthropathies (gout and pseudogout), infection (septic joint), reactive arthritis and acute...

10 Apr 20175min

Podcast #187: Mumps

Podcast #187: Mumps

Author: Gretchen Hinson M.D. Educational Pearls: The key imaging of a mumps patient is "chipmunk cheeks" or parotitis. The swelling can extend almost to the ears and can be extremely painful - in abo...

29 Mars 20174min

Podcast #186: IV Contrast

Podcast #186: IV Contrast

Author: Aaron Lessen M.D. Educational Pearls: Regularly a patient's creatinine level is an important factor in determining whether a patient will receive IV contrast with a CT because it is thought t...

21 Mars 20172min

Deep Dive #1: Travel Medicine

Deep Dive #1: Travel Medicine

Author: Peter Bakes M.D. Dr. Peter Bakes takes us through how he developed his interest in travel medicine as well as some of the more interesting aspects of the specialty.

11 Mars 201732min

Neuromuscular Blocking Agents

Neuromuscular Blocking Agents

Author: Peter Bakes Educational Pearls: The Neuromuscular Junction (NMJ) is a neuronal synapse in skeletal muscle mediated by nicotinic acetylcholine receptors. Paralytic agents, commonly used in the...

10 Mars 20174min

Syncope and PE

Syncope and PE

There are many causes of syncope and a pulmonary embolism may be a commonly missed reason.

6 Feb 20173min

Electrolyte Emergency

Electrolyte Emergency

Electrolytes it's what your bodies crave.

3 Feb 20175min

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