In this podcast, the hosts discuss marine exposures in emergency medicine, focusing on scombroid and improperly stored fish. They explore symptoms, mechanisms, and treatments. They also cover shellfish toxins and marine bacterial infections like Vibrio parahaemolyticus and Vibrio vulnificus, discussing symptoms, treatment options, and supportive care.
Scombroid poisoning is an allergic reaction to improperly stored fish, presenting with metallic taste and flushing, treated with antihistamines.
Vibrio parahemolyticus causes cholera-like symptoms and is treated with doxycycline and supportive care.
Deep dives
Summary of Scombroid and Ciguatera Poisoning
Scombroid poisoning is an allergic reaction that occurs within minutes of eating improperly stored fish. Symptoms include a metallic or peppery taste in the mouth, flushing, and non-specific GI symptoms. Treatment involves antihistamines and supportive care. Ciguatera poisoning, on the other hand, is a neurotoxic reaction that occurs hours after eating certain types of fish. Common symptoms include parasthesia and a reversal of hot and cold temperatures. Supportive care is the mainstay of treatment for this condition.
Summary of Bacterial Infections from the Sea
There are two main bacterial infections associated with the sea. Vibrio parahemolyticus presents with cholera-like symptoms, such as diarrhea, cramping, and vomiting. Treatment involves supportive care and antibiotics, such as doxycycline. Vibrio vulnificus, on the other hand, causes necrotizing skin infections. Patients may present with red patches, bruising, and vesicles. Treatment involves admission, aggressive wound management, and antibiotics, such as doxycycline and ceftriaxone.
Summary of Microbacterium Marinum Infection
Microbacterium marinum is a limited skin infection that typically occurs in individuals who work with fish tanks or aquariums. Symptoms include chronic wounds on the wrist and hands. Treatment involves antibiotics, such as doxycycline or clarithromycin, as well as wound care.
We're talking those impossible-to-remember marine exposures that will always be a thorn in your side on the test. Unless you work on the coast (or Australia), you will never see these.
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Cite this podcast as: Briggs, Blake; Husain, Iltifat. 211. Marine exposures: something's fishy. February 5th, 2024. Accessed [date].
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