Nokea
Slow channel syndrome is due to
- A. Accumulation of Na+ ions in channels
- B. Accumulation of K+ ions in channels
- C. Accumulation of Mg++ ions in channels
- D. Accumulation of Ca++ ions in channels
Correct Answer: D
Rationale: Slow channel syndrome relates to calcium channel dysfunction.
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Strategies prescribers can use to prevent misuse of controlled prescription drugs include:
- A. Use of chemical dependency screening tools
- B. Firm limit-setting regarding prescribing controlled substances
- C. Practicing 'just say no' to deal with patients who are pushing the provider to prescribe controlled substances
- D. All of the above
Correct Answer: D
Rationale: All strategies "screening , limits , and refusal "help prevent misuse of controlled substances.
After admitting a patient to the unit, the nurse is organizing times to administer ordered medications. What important consideration will guide the nurse's timing of each medication?
- A. Comfort
- B. Ethnicity of patient
- C. Gender
- D. Age
Correct Answer: D
Rationale: Age affects metabolism and timing needs (e.g., elderly may need adjusted schedules).
A patient wants to know about the possible interactions of the various drugs that he has been prescribed for an illness. The nurse explains that the drugs interact with each other and produce an effect that is greater than the sum of their separate actions. Which of the following reactions is the nurse informing about?
- A. Additive drug reaction
- B. Synergistic drug reaction
- C. Antagonistic drug reaction
- D. Toxic drug reaction
Correct Answer: B
Rationale: A synergistic drug reaction occurs when drugs interact with each other and produce a sum greater than the sum of their separate actions. An additive drug reaction occurs when the combined effect of two drugs is equal to the sum of each drug given alone. An antagonistic drug reaction occurs when one drug interferes with the action of another, causing neutralization or a decrease in the effect of one drug. Toxic drug reactions are caused when blood concentration levels exceed the therapeutic levels of a drug.
Avoid concurrent administration of exenatide with which of the following drugs?
- A. Digoxin
- B. Warfarin
- C. Lovastatin
- D. All of the above
Correct Answer: D
Rationale: Exenatide delays gastric emptying, potentially affecting absorption of digoxin , warfarin , and lovastatin .
Choose a drug that does not cause bradycardia:
- A. Clonidine
- B. Guanethidine
- C. Hydralazine causes reflex tactycardia
- D. Propranolol
Correct Answer: C
Rationale: Hydralazine causes reflex tachycardia, not bradycardia.