Most calcium channel blockers reduce the force of myocardial contractions. The nurse knows which drugs have this negative chronotropic effect at a therapeutic dose?
Standard Text: Select all that apply.
1. Verapamil
2. Diltiazem
3. Amlodipine
4. Felodipine
5. Nicardipine
Correct Answer: 1,2
Rationale 1: Verapamil has a negative chronotropic effect on the myocardium at a therapeutic dose.
Rationale 2: Diltiazem has a negative chronotropic effect on the myocardium at a therapeutic dose.
Rationale 3: Amlodipine has a negative chronotropic effect on the myocardium only at high doses.
Rationale 4: Felodipine has a negative chronotropic effect on the myocardium only at high doses.
Rationale 5: Nicardipine has a negative chronotropic effect on the myocardium only at high doses.
Global Rationale: Verapamil and diltiazem both have a negative chronotropic effect on the myocardium at a therapeutic dose. Amlodipine, felodipine, and nicardipine all have a negative chronotropic effect on the myocardium when prescribed at high doses.
You might also like to view...
Before surgery, the nurse observes the client listening to music on the radio. Based on this observation, the nurse may try which nonpharmacologic intervention for pain relief in the post-operative setting?
a. Cutaneous skin stimulation b. Hypnosis c. Imagery d. Radiofrequency ablation
A client's mixed venous oxygen saturation (SvO2) is 44%. What is the nurse's interpretation of this finding?
A. The client's oxygen supply and oxygen demand are in balance. B. The client's oxygen supply exceeds the oxygen demand. C. The client's oxygen demand exceeds the oxygen supply. D. The client has oxygen toxicity.
The nurse equates a patient's behavior as being similar to that of a family member. In which way should the nurse's opinion be categorized?
1. Transference 2. Ethnocentrism 3. Cultural relativism 4. Countertransference
When a patient walks with an assistive device, the gait is determined by the
A. nursing assistant. B. RN or physical therapist. C. nurse or occupational therapist. D. patient.