II. Pathophysiology

  1. Scuba Diving related injury
  2. Oxygen free-radical related neurologic toxicity

III. Predisposing factors

  1. Diving with Nitrox (32 to 36% Oxygen breathing mixture)

IV. Symptoms (develop at depth without warning)

  1. Seizures
    1. Focal: Facial or lip twitching (60% of patients)
    2. Generalized Seizures in 10% of patients (often fatal)
  2. Vertigo
  3. Nausea or Vomiting
  4. Paresthesias
  5. Visual constriction
  6. Respiratory changes

V. Management

  1. Reduce oxygen exposure
  2. Seizure Management as needed

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