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.

Avsnitt(1147)

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Podcast # 326: Valley Fever

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Author: Michael Hunt, MD Educational Pearls: Valley fever is a fungal infection known as Coccidiomycosis that can present with vague symptoms like cough, fever, myalgias. A thorough history is crit...

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Podcast #324: Superwarfarin

Podcast #324: Superwarfarin

Author: Rachel Beham, PharmD Educational Pearls: Some synthetic cannabinoids have been contaminated with Brodifacoum. Brodifacoum is a Vitamin K antagonist and can present with a severe coagulopathy....

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Podcast #323: Calcium Channel Toxicity

Podcast #323: Calcium Channel Toxicity

Author: Jared Scott, M.D. Educational Pearls: Cardiac myocytes and vascular smooth muscle are dependent on an intracellular calcium influx for contraction. Pancreatic beta cells rely on calcium to re...

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Podcast #322: Methemoglobinemia

Podcast #322: Methemoglobinemia

Author: Nick Hatch, M.D. Educational Pearls: Methemoglobinemia is when the iron in hemoglobin is in the Fe3+ (ferric) state rather than the normal Fe2+ (ferrous) state. Methemoglobin cannot releas...

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Podcast #321: Migraine Treatment in ED

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Author: Jared Scott, M.D. Educational Pearls: Recent study compared Compazine with Benadryl vs. Dilaudid for acute migraine management in the ED. Compazine + Benadryl demonstrated migraine relief...

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