Fig. 21.1
12-lead ECG

  1. 1.

    What is concerning about this ECG?


  2. 2.

    What factors contribute toward this presentation?


  3. 3.

    How do you emergently correct this abnormality?


  4. 4.

    What are the risks of anesthetizing a patient with this ECG?



  1. 1.

    The clinical scenario and presentation along with the ECG suggests hyperkalemia.Hyperkalemia is defined as a potassium level >5.5 mEq/L. Moderate hyperkalemia is a serum potassium >6.0 mEq/L, and severe hyperkaliemia is a serum potassium >7.0 mE/L. Easily distinguished ECG signs of hyperkalemia are: Serum potassium >5.5 mEq/L [1]


  • Peaked T waves

Serum potassium >6.0 mEq/L

  • P wave widening and disappearance

  • Prolongation of the PR interval

  • QT interval shortening

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Sep 23, 2017 | Posted by in Uncategorized | Comments Off on ECG V

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