Lectures

Caustic Ingestion

by Carlo Raj, MD
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    00:01 Caustic Ingestion.

    00:02 If a patient has been taking chemicals; consumption of it, such as drain cleaners.

    00:10 Why? You might have to ask the patient.

    00:12 But injury by alkali, more so than acids.

    00:15 Alkali is much more dangerous in terms of the way that the chemical then affects the esophagus.

    00:22 You’re going to cause full thickness burn, liquefactive necrosis, with the caustic ingestion of alkaline agent.

    00:30 Do not induce vomiting by… after lye ingestion.

    00:33 The vomiting actually worsens the burn.

    00:35 That is a huge management point there.

    00:38 Once again, do not induce vomiting after lye ingestion.

    00:42 It just makes matters worse, because now the patient is literally exogenously introducing damage internally to the esophagus. You can expect there to be strictures taking place. Stricture formation is common, may be prevented by getting in there with endoscopy and then dilating your esophagus maybe perhaps by placing a stent. 3 to 4 weeks after ingestion.

    01:11 You’ll want to wait a little bit because the patient is going to be in quite a bit of pain.

    01:16 Caustic ingestion; alkaline agents.

    01:20 Complications: with the full thickness being involved here, and with the liquefactive, you’re worried about chest… well, perforation.

    01:31 And hence the chest X-ray becomes very, very crucial for you to closely examine a patient after you know there’s a history of caustic ingestion, because if that esophagus ruptures, your patient’s dead! So that is a big deal here with perforation.

    01:51 Risk factor here, remember now, with caustic ingestion, and you’re thinking more along the lines of alkaline, much more so than acid.

    02:01 And with the stricture formation, and with persistent irritation, dysplasia and the type of cancer that the patient would most likely develop would be squamous cell cancer of the esophagus.

    02:17 Versus reflux which would then first undergo metaplasia, then may then develop dysplasia and adenocarcinoma.


    About the Lecture

    The lecture Caustic Ingestion by Carlo Raj, MD is from the course Esophageal Disease.


    Included Quiz Questions

    1. Squamous cell carcinoma
    2. Adenocarcinoma
    3. Sarcoma
    4. Lymphoma
    5. Small cell cancer
    1. Endoscopic dilatation or stenting soon after the poisoning
    2. Chest x-ray
    3. Inducing vomiting
    4. Charcoal ingestion
    5. CT scan of the chest
    1. Liquefactive necrosis
    2. Coagulative necrosis
    3. Fat necrosis
    4. Fibroid necrosis
    5. Gangrenous necrosis

    Author of lecture Caustic Ingestion

     Carlo Raj, MD

    Carlo Raj, MD


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