ECG Question #17


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):


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


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.