Question 82 · LEK · Potassium balance
Which of the following are characteristic of ECG in hypokalemia?
1) elongation of PR interval;
2) flattening of P wave;
3) widening of QRS complexes;
4) depression of ST segments;
5) increased amplitude and width of U waves.
The correct answer is:
2) flattening of P wave;
3) widening of QRS complexes;
4) depression of ST segments;
5) increased amplitude and width of U waves.
The correct answer is:
- A. 1,3,5.
- B. 1,2,3.
- C. 1,3,4,5.
- D. 2,3,5.
- E. 2,4.
Hint
Low potassium delays repolarization; remember which wave becomes prominent and which atrial change belongs to hyperkalemia instead.
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