Nokea
Alcohol should not be given with
- A. Sulphonamides
- B. Clonidine
- C. Reserpine
- D. Metronidazole
Correct Answer: D
Rationale: Metronidazole with alcohol causes a disulfiram-like reaction (flushing, nausea).
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Binding of drugs to albumin is irreversible.
- A. TRUE
- B. FALSE
Correct Answer: B
Rationale: False; binding to albumin is reversible, allowing drugs to dissociate and become active or available for elimination.
The nurse is aware that for a drug to work properly on reactive tissues, a sufficient amount of the drug is needed to cause the therapeutic effect. The term used for this amount is:
- A. Critical concentration
- B. Dynamic equilibrium
- C. Selective toxicity
- D. Active transport
Correct Answer: A
Rationale: A critical concentration of a drug must be present before a reaction occurs within our cells. A dynamic equilibrium is obtained from absorption of a drug from the site of drug entry, distribution to the active site, metabolism in the liver, and excretion from the body to have a critical concentration. Selective toxicity is the ability of a drug to attach only to those systems found in foreign cells. Active transport is the process that uses energy to actively move a molecule across a cell membrane and is often involved in drug excretion in the kidney.
The patient asks the nurse, Is it safe to take over-the-counter (OTC) medications with prescription medications? What is the nurse's best response?(Select one that does not apply.)
- A. OTC medications can interact with prescription medications.
- B. It is important to tell your doctor all medications you take, including OTC.
- C. OTC medications could mask or hide signs and symptoms of a disease.
- D. You should avoid taking any OTC medication when taking prescription drugs.
Correct Answer: D
Rationale: OTC medications can interact with prescription medications or other OTC so it is always important to consult your pharmacist and provider for advice. To provide the most accurate instruction, the health care provider must know all medications taken including dietary supplements, OTC, and prescription. OTC medications could mask or hide symptoms of a disease so it is always important to consult a physician if symptoms persist. OTC medications are not prohibited when taking prescription drugs as long as no drug interaction occurs. How an OTC will impact a prescription medication varies depending on the medications involved, so it is incorrect to say it will make the prescription drug more effective.
Which of the following create a higher risk for digoxin toxicity? Both the cause and the reason for it must be correct.
- A. Older adults because of reduced renal function
- B. Administration of aldosterone antagonist diuretics because of decreased potassium levels
- C. Taking an antacid for gastroesophageal reflux disease because it increases the absorption of digoxin
- D. Doses between 0.25 and 0.5 mg/day
Correct Answer: A
Rationale: Older adults have reduced renal clearance, increasing digoxin toxicity risk.
A physician has ordered intramuscular (IM) injections of morphine, a narcotic, every 4 hours as needed for pain in a motor vehicle accident victim. The nurse is aware this drug has a high abuse potential. Under what category would morphine be classified?
- A. Schedule I
- B. Schedule II
- C. Schedule III
- D. Schedule IV
Correct Answer: B
Rationale: Narcotics with a high abuse potential are classified as Schedule II drugs because of severe dependence liability. Schedule I drugs have high abuse potential and no accepted medical use. Schedule III drugs have a lesser abuse potential than II and an accepted medical use. Schedule IV drugs have low abuse potential and limited dependence liability.