Fig. 21.1
12-lead ECG
- 1.
What is concerning about this ECG?
- 2.
What factors contribute toward this presentation?
- 3.
How do you emergently correct this abnormality?
- 4.
What are the risks of anesthetizing a patient with this ECG?
Answers
- 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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