The patient receives amlodipine (Norvasc) for treatment of angina. What is a primary assessment for the nurse?
1. A sudden weight loss of 5 pounds or more
2. Hypokalemia and hypernatremia
3. Marked increase in international normalized ration (INR) levels
4. A sudden weight gain of 2 pounds or more
Correct Answer: 4
Rationale: Calcium channel blockers may worsen heart failure. Assess for signs of fluid retention by obtaining daily weights. A sudden increase in weight of 2 pounds or more may indicate fluid retention. Calcium channel blockers do not affect the international normalized ration (INR) level. Calcium channel blockers can result in fluid retention, not fluid loss. Calcium channel blockers do not affect serum levels of potassium or sodium.
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