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

Jaksot(1146)

Podcast #319: Cardiac Arrest Survival Factors

Podcast #319: Cardiac Arrest Survival Factors

Author: Aaron Lessen, MD Educational Pearls: Shockable rhythms like V-fib or V-tach have a better prognosis than patients with PEA or asystole. Recent study has shown an initial electrical freque...

20 Huhti 20182min

Podcast #318: Nystagmus

Podcast #318: Nystagmus

Author: Erik Verzemnieks, M.D. Educational Pearls: ● Common causes of nystagmus: Congenital disorders, CNS diseases (MS, CVA), Intoxication ● Drugs associated (ETOH, Ketamine, PCP, SSRI, MDMA, Lit...

13 Huhti 20181min

Podcast #317: Elbow Dislocation

Podcast #317: Elbow Dislocation

Author: John Winkler, M.D. Educational Pearls: ● Lower mechanisms of injury have a lower chance of an associated fracture or major ligament injury ● One major concern is having a fracture fragment i...

11 Huhti 20182min

Podcast #316: Abnormalities in Alcohol Intoxication

Podcast #316: Abnormalities in Alcohol Intoxication

Author: Michael Hunt, M.D. Educational Pearls: 1% of patients presenting to ED with alcohol intoxication end up going to the ICU Most common critical illnesses were acute hypoxic respiratory fail...

9 Huhti 20183min

Podcast #315: Retropharyngeal Infections in Pediatrics

Podcast #315: Retropharyngeal Infections in Pediatrics

Author: Dr. Karen Woolf, MD Educational Pearls: Anatomy : base of skull to posterior mediastinum, anteriorly bounded by middle layer of deep cervical fascia and posteriorly by the deep layer, communi...

6 Huhti 20186min

Podcast #314: Psychogenic nonepileptic seizures (PNES)

Podcast #314: Psychogenic nonepileptic seizures (PNES)

Author: Gretchen Hinson, M.D. Educational Pearls: PNES vs. epilepsy: postictal state is diagnostic of an epileptic seizure (sonorous respirations and/or confusion, lasting typically 20-30 minutes);...

4 Huhti 20185min

Podcast #313: Flu Screening

Podcast #313: Flu Screening

Author: Dr. Peter Bakes Educational Pearls: High risk patients: underlying lung disease, immunocompromised, extremes of age (65), underlying cardiac/renal/neurologic disease, and pregnant women Testi...

2 Huhti 20187min

Podcast #312: SCIWORA

Podcast #312: SCIWORA

Author: Sam Killian, M.D. Educational Pearls: Spinal cord injury without radiographic abnormality (SCIWORA) is a diagnosis defined as traumatic injury to spine with clinical sx of traumatic myelopa...

30 Maalis 20184min

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