Which of the following statements about calcium channel–blocking (CCB) drugs is accurate?
A) Since CCB drugs work the ?-adrenergic receptors to open the channels, vasoconstriction occurs.
B) CCB drugs work on ?-adrenergic receptors to close the channels, so vasodilation occurs.
C) CCB drugs prevent reabsorption of calcium in the kidneys and therefore can lower serum calcium levels.
D) CCB drugs cause smooth muscle contraction, thereby allowing more blood to be stored in veins.
Ans: B
Feedback:
Calcium channel–blocking drugs cause vasodilation by blocking calcium entry through the calcium channels. They do not cause vasoconstriction, lower serum calcium levels, or cause smooth muscle contraction.
You might also like to view...
The nurse is planning to provide calcitonin (Miacalcin) for a client with hypocalcemia. Place the following steps in correct order to provide this medication
A. Squeeze the dispenser to provide a mist spray. B. Instruct the client to block the opposite nostril. C. Ask the client to assume a sitting position leaning slightly forward. D. Place the dispenser into the client's nostril. E. Wash hands and don gloves. ____ 1. First
A client reports fullness of the stomach, fatigue, nausea, vomiting, and abdominal bloating. The client is diagnosed with stomach cancer. Which medication does the nurse expect the primary health-care provider to prescribe?
1. Cisplatin 2. Ticlopidine 3. Cyclosporine 4. Tacrolimus
Of the following STIs, for which STI should the nurse anticipate a prescription for antibiotics such as tetracycline or doxycycline since this infection will respond to antibiotic treatment?
A) Human papillomavirus (HPV) infection B) Herpes simplex virus type 2 (HSV-2) infection C) Candidiasis D) Lymphogranuloma venereum (LGV)
Victim care and crime scene preservation cannot be done at the same time
Indicate whether the statement is true or false.