The Nurse Is Assessing a Patient Before Administration of a Cardiac

Multiple Choice

The nurse is assessing a patient before administration of a cardiac glycoside.Which laboratory result can increase the toxicity of the drug?

A) Potassium level of 2.8 mmol/L
B) Potassium level of 4.9 mmol/L
C) Sodium level of 140 mmol/L
D) Calcium level of 10 mmol/L