The client with congestive heart failure is taking digoxin (Lanoxin), a cardiac glycoside. Which data indicates the medication is ineffective? 1. The client’s blood pressure is 110/68. 2. The client’s...

The client with congestive heart failure is taking digoxin (Lanoxin), a cardiac glycoside. Which data indicates the medication is ineffective?

1. The client’s blood pressure is 110/68.

2. The client’s apical pulse rate is 68.

3. The client’s potassium level is 4.2 mEq/L.

4. The client’s lungs have crackles bilaterally