Calcium channel blockers affect the sinoatrial (SA) node by:
A. increasing depolarization and increasing the heart rate.
B. slowing repolarization and decreasing the heart rate.
C. slowing depolarization and decreasing the heart rate.
D. increasing repolarization and increasing the heart rate.
Answer: C
You might also like to view...
A 34-year-old woman with a body mass index of 56 has recently started to take orlistat. The nurse has educated the patient about the common adverse effects of this medication, including the potential for diarrhea and flatulence
Which of the following meals would be most likely to exacerbate the adverse effects of orlistat? A) A Cobb salad with romaine lettuce, boiled egg, chicken breast, tomato, and cheese B) A tomato, green pepper, and ham omelet C) A salami, sausage, and pepperoni pizza topped with mozzarella and parmesan D) A bowl of beef chili con carne topped with diced onions
The nurse is reviewing risk factors for breast cancer. Which of these women have risk factors that place them at a higher risk for breast cancer?
a. 37 year old who is slightly overweight b. 42 year old who has had ovarian cancer c. 45 year old who has never been pregnant d. 65 year old whose mother had breast cancer
A nurse manager who uses Frederick Taylor's scientific management approach, would most likely focus on which of the following?
a. General principles c. Labor productivity b. Positional authority d. Impersonal relations
A 40-year-old client is scheduled to have a hysterectomy. The physician recommends that the client stop taking certain medications for at least a week before the surgery and avoid herbal supplements, such as green tea leaf, turmeric, and ginger,
during this period. Which explanation should the nurse give the client for avoiding herbal supplements in the preoperative period? A) May decrease the effect of anesthetic agents B) May interact with the antibiotics administered C) May cause slow healing of the incision D) May contribute to the risk of bleeding