Which of the following explains the inability of the nitrates to act as coronary dilators during angina?
A. Nitrates do not act on vascular smooth muscle.
B. The arteries are already maximally dilated by ischemia.
C. The most common route of administration is sublingual.
D. Arteriolar dilation is greater than venodilation is at low-dose ranges.
Answer: B
You might also like to view...
A patient has arrived at the emergency department via ambulance. The EMT states, "She is barely responsive. She took all of the Ativan in this bottle." What medication should the nurse prepare to administer to the patient?
A) Naloxone (Narcan) B) Physostigmine (Antilirium) C) Methylene blue D) Flumazenil (Romazicon)
Directions: Calculate the IV flow rates with DA equations where requested. For credit, show work. Label all answers. Label flow rates in milliliters per hour or drops per minutes, as needed. Ordered: D5LRS IV at 40 mL per hr. Available: D5LRS 500 mL; gravity device with microdrip administration set. a. What is the DF for a microdrip administration set? How many hours (and minutes, if
applicable) will the infusion last? b. DA equation:What flow rate will the nurse set? c. Estimated flow rate: d. DA equation: e. Evaluation:
A client has recently had mitral valve replacement surgery. To prevent excess serosanguineous fluid buildup, the nurse anticipates that care will include:
1. Increased oxygen therapy 2. Frequent chest physiotherapy 3. Incentive spirometry on a regularly scheduled basis 4. Chest tube placement in the thoracic cavity
A teacher in a preschool is diagnosed with giardiasis. Which of the following medications will be administered to treat the diarrhea and abdominal distention?
A) Sulfasalazine (Azulfidine) B) Metronidazole (Flagyl) C) Trimethoprim–sulfamethoxazole (Bactrim) D) Doxycycline (Vibramycin)