Which of the following would the nurse expect to note on the electrocardiogram as a result of the laboratory value? A nurse reviews the electrolyte results of an assigned client and notes that the potassium level is 5.4 mEq/L.
A. ST depression B. Inverted T wave C. Prominent U wave D. Tall peaked T waves
Tall peaked t waves-rationale: a serum potassium level higher than 5.1 meq/l indicates hyperkalemia. electrocardiographic changes include flat p waves, prolonged pr intervals, widened qrs complexes, and tall peaked t waves.test-taking strategy: from the information in the question, you need to determine that this condition is a hyperkalemic one. from this point, you must know the electrocardiographic changes that are expected when hyperkalemia exists. if you had difficulty with this question, review the normal serum potassium level and the electrocardiographic changes that occur in hyperkalemia.