A client is prescribed a calcium channel blocker for control of ...

[beccaep]

A client is prescribed a calcium channel blocker for control of hypertension is now prescribed a beta blocker to control a fast ventricular rate. What should the nurse include in instructions regarding the medications?
 
  1. Eat a high-fiber, low-carbohydrate diet.
  2. Do not take this medication with grapefruit juice.
  3. Maintain a daily exercise regimen.
  4. Report irregular heart rate or shortness of breath to the health care provider.

Question 2

A client is prescribed dofetilide (Tikosyn) for conversion of atrial fibrillation. The nurse plans to monitor for which adverse effect?
 
  1. Widening of the QT interval
  2. Inverted T waves
  3. Widening of the PR interval
  4. Widening of the QRS complex

[adf223]

Answer to Question 1

Correct Answer: 4
Rationale 1: The diet should be low in salt and fat.
Rationale 2: There is no contraindication to taking these classifications of medications with grapefruit.
Rationale 3: Everyone should maintain an exercise regimen. This is not specific to the classification of medication given.
Rationale 4: Because concurrent use of a calcium channel blocker and a beta-adrenergic blocker can cause partial or complete heart block, palpitations or dyspnea should be reported immediately. The nurse should give instructions in terms the client can understand.
Global Rationale: Because concurrent use of a calcium channel blocker and a beta-adrenergic blocker can cause partial or complete heart block, palpitations or dyspnea should be reported immediately. The nurse should give instructions in terms the client can understand. The diet should be low in salt and fat. There is no contraindication to taking these classifications of medications with grapefruit. Everyone should maintain an exercise regimen. This is not specific to the classification of medication given.

Answer to Question 2

Correct Answer: 1
Rationale 1: Like other potassium channel blockers, dofetilide prolongs the refractory period and action potential duration, thus increasing the QT interval.
Rationale 2: T waves are not affected.
Rationale 3: Dofetilide has no effect on the PR interval.
Rationale 4: Dofetilide does not widen the QRS.
Global Rationale: Like other potassium channel blockers, dofetilide prolongs the refractory period and action potential duration, thus increasing the QT interval. Dofetilide has no effect on the T waves or PR interval andit does not widen the QRS.

[beccaep]

Thank you!

[adf223]

Always glad to help...