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, Lithium, Phenytoin, Barbiturates)

● If a patient has nystagmus and is intoxicated, consider other drugs and etiologies as potential sources

References:
Alpert JN. (1978). Downbeat nystagmus due to anticonvulsant toxicity. ​Annals of

Neurology.​ 4(5):471-3.
Rosenberg, ML. (1987) Reversible downbeat nystagmus secondary to excessive

alcohol intake. ​Journal of Clinical Neuroophthalmology​. 7(1):23-5.

Weiner AL, Vieira L, McKay CA, Bayer MJ. (2000). Ketamine abusers presenting to the emergency department: a case series. ​Journal of Emergency Medicine.​ 18(4):447-51.

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Podcast #311: Recurrence of Seizures in Pediatrics

Author: Aaron Lessen, M.D. Educational Pearls: Recurrence rate for first time unprovoked seizures - 5% after 48 hours, 14% at 2 weeks , 30% after 4 months. Higher risk for recurrence: age under 3; pa...

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Author: Gretchen Hinson, M.D. Educational Pearls: Controversial topic. Pathophysiology - acidosis leads to an extracellular potassium shift. Patients in DKA will be intracellularly potassium deplete,...

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Author: Alicia Oberle, MD Educational Pearls: Recent study has shown risk factors for return included patients at high risk for resistance (nursing home, obstructive uropathy), patient where diagno...

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Podcast #308: Ultrasound in Cardiac Arrest

Podcast #308: Ultrasound in Cardiac Arrest

Author: Aaron Lessen, M.D. Educational Pearls: There is currently debate within the medical community about what constitutes cardiac activity on ultrasound in the setting of cardiac arrest. A recent ...

21 Mar 20182min

Podcast #307: Guillain-Barre Syndrome

Podcast #307: Guillain-Barre Syndrome

Author: Peter Bakes, M.D. Educational Pearls: Rare disease with 1-2 patients out of 100,000. About 60% of patients report a preceding diarrheal illness and classically presents with an ascending mo...

19 Mar 20184min

Podcast #306: Tramadol Drama

Podcast #306: Tramadol Drama

Author: Nick Hatch, M.D. Educational Pearls Tramadol acts at multiple receptors and is a partial agonist at the mu opioid receptor, but also blocks reuptake of serotonin and norepinephrine throughou...

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Podcast #305: Stuffers vs. Packers : Drug-Packet Ingestion

Podcast #305: Stuffers vs. Packers : Drug-Packet Ingestion

Author: Aaron Lessen, M.D. Educational Pearls A "stuffer" is a term for someone who hastily and conceals a bag of drugs orally/rectally/vaginally in an unplanned situation. A "packer" is someone who...

14 Mar 20183min

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