ECG Question #17

Question

A client has potassium level of 2.4 mEq/L. The nurse understands that electrocardiogram (ECG) changes may occur which may include (select all that apply):

Answers

  1. ST depression
    • Rationale:
  2. Shallow flat inverted T wave
    • Rationale:
  3. Prominent U wave
    • Rationale:
  4. Absent U wave
    • Rationale:

Overview

Explanation

Hypokalemia may precipitate disturbances in cardiac electrical conduction, ventricular dysrhythmias, and may contribute to digoxin toxicity. Minimal hypokalemia may not have ECG changes; however, ECG findings may include flattening and inverted T wave, ST depression, and presence of a U wave and may be apparent when potassium levels fall below 3 mEq/L.

Learning Outcomes

Test Taking Tip

Video Rationale