Which of the following is TRUE regarding marine...

Name: Problem 6, Chapter 7: Emergency Medicine Examination & Board Review
Uploaded: 2021-04-21T01:27:14-08:00
Duration: 1 min 23 s
Channel: Christina Sorrentino
Description: Which of the following is TRUE regarding marine envenomations? (A) Jellyfish nematocysts are inactivated by fresh water rinsing. (B) Sponge dermatitis is treated with antibiotics against gram-negative organisms. (C) Hot water immersion is an effective pain reliever for venomous fish and stingray injuries. (D) Tetrodotoxin poisoning from an octopus bite may be reversed with antivenin.

Which of the following is TRUE regarding marine envenomations? (A) Jellyfish nematocysts are inactivated by fresh water rinsing. (B) Sponge dermatitis is treated with antibiotics against gram-negative organisms. (C) Hot water immersion is an effective pain reliever for venomous fish and stingray injuries. (D) Tetrodotoxin poisoning from an octopus bite may be reversed with antivenin.

Which of the following is TRUE regarding marine envenomations?
(A) Jellyfish nematocysts are inactivated by fresh water rinsing.
(B) Sponge dermatitis is treated with antibiotics against gram-negative organisms.
(C) Hot water immersion is an effective pain reliever for venomous fish and stingray injuries.
(D) Tetrodotoxin poisoning from an octopus bite may be reversed with antivenin.

Key Concepts

Jellyfish Nematocyst Activation

Jellyfish envenomation involves the discharge of nematocysts—specialized cells that contain venom—upon contact with the skin. The osmotic conditions play an important role in managing these stings, as exposure to inappropriate rinsing solutions, such as freshwater, can trigger additional nematocyst discharge, worsening the injury. Proper management typically involves rinsing with solutions like seawater or vinegar to help inactivate any undischarged nematocysts.

Hot Water Immersion Therapy

Hot water immersion therapy is a widely recommended treatment for certain marine envenomations, particularly those caused by venomous fish and stingrays. The therapy leverages the heat-labile nature of many marine venoms—immersing the affected area in hot water helps to denature the toxins and alleviate pain. This non-invasive method is effective when administered at appropriate temperatures, providing symptomatic relief and reducing venom activity.

Marine Envenomation

Marine envenomation refers to injuries or poisoning that occur due to the injection of venom by sea creatures. This encompasses a diverse group of marine organisms, including jellyfish, stingrays, and venomous fish, each delivering specific toxins that can cause localized pain, tissue damage, or systemic effects. Understanding the proper first-aid and treatment protocols based on the type of toxin is crucial in managing these injuries effectively.

Tetrodotoxin

Tetrodotoxin is a potent neurotoxin found in some marine animals that works by blocking sodium channels, leading to paralysis and potentially life-threatening complications. A key point in its management is that there is no specific antivenin available to reverse its effects. Instead, treatment focuses on supportive care to manage symptoms and prevent complications until the toxin is metabolized and cleared by the body.

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