ATI RN
ATI Pharmacology Quizlet
1. A healthcare professional is preparing to administer Haloperidol 2 mg PO every 12 hr. The available medication is haloperidol 1 mg/tablet. How many tablets should the healthcare professional administer?
- A. 1 tablet
- B. 2 tablets
- C. 3 tablets
- D. 4 tablets
Correct answer: B
Rationale: To calculate the number of tablets needed, divide the desired dose by the dose per tablet. In this case, (2 mg / 1 mg/tablet) = 2 tablets required to administer the correct dosage of Haloperidol.
2. A healthcare professional is administering a Dopamine infusion at a low dose to a client with severe heart failure. Which of the following findings is an expected effect of this medication?
- A. Lowered heart rate
- B. Increased myocardial contractility
- C. Decreased conduction through the AV node
- D. Vasoconstriction of renal blood vessels
Correct answer: B
Rationale: Dopamine, when administered at a low dose, is expected to increase myocardial contractility by stimulating beta1 receptors. This positive inotropic effect leads to an increase in cardiac output. Therefore, the correct answer is increased myocardial contractility, as it is a desired effect of administering dopamine to a client with severe heart failure.
3. A nurse reviewing a client's medical record notes a new prescription for verifying the trough level of the client's medication. Which of the following actions should the nurse take?
- A. Obtain a blood specimen immediately prior to administering the next dose of medication.
- B. Verify that the client has been taking the medication for 24 hours before obtaining a blood specimen.
- C. Ask the client to provide a urine specimen after the next dose of medication.
- D. Administer the medication and obtain a blood specimen 30 minutes later.
Correct answer: A
Rationale: To verify the trough levels of a medication accurately, the nurse should obtain a blood specimen immediately before administering the next dose of the medication. The trough level represents the lowest concentration of the medication in the bloodstream, typically right before the next dose is due. This timing ensures an accurate assessment of the drug's concentration in the body at its lowest point, aiding in determining the drug's effectiveness and potential toxicity levels. Choice B is incorrect because waiting for 24 hours would not provide the trough level. Choice C is incorrect as urine specimens are not used to measure trough levels. Choice D is incorrect as obtaining a blood specimen 30 minutes after administering the medication would not reflect the trough level.
4. A client with Addison's disease is being admitted for a total hip arthroplasty. The client takes hydrocortisone for Addison's disease. What is the nurse's priority action?
- A. Administering a supplemental dose of hydrocortisone
- B. Instructing the client about coughing and deep breathing
- C. Collecting additional information from the client about his history of Addison's disease
- D. Inserting an indwelling urinary catheter
Correct answer: A
Rationale: The nurse's priority in this situation is to administer a supplemental dose of hydrocortisone. Clients with Addison's disease taking hydrocortisone are at risk of acute adrenal insufficiency during times of stress such as surgery. Administering supplemental doses of hydrocortisone helps prevent acute adrenal insufficiency (adrenal crisis) in these situations, making it the priority action to ensure the client's safety. Instructing the client about coughing and deep breathing is important postoperatively but not the priority at this time. Collecting additional information about the client's history of Addison's disease is important but not the priority action before surgery. Inserting an indwelling urinary catheter is not the priority in this situation.
5. A client has a new prescription for Albuterol and Beclomethasone inhalers for the control of asthma. Which of the following instructions should the nurse include in the teaching?
- A. Take the albuterol at the same time each day.
- B. Administer the albuterol inhaler before using the beclomethasone inhaler.
- C. Use beclomethasone if experiencing an acute episode.
- D. Avoid shaking the beclomethasone before use.
Correct answer: B
Rationale: When a client is prescribed an inhaled beta2-agonist (such as albuterol) and an inhaled glucocorticoid (such as beclomethasone) for asthma control, the beta2-agonist should be administered first. Administering the beta2-agonist before the glucocorticoid helps promote bronchodilation and enhances the absorption of the glucocorticoid, maximizing its effectiveness in the lungs. Choice A is incorrect because albuterol is usually taken as needed for quick relief of asthma symptoms and not necessarily at the same time each day. Choice C is incorrect as beclomethasone is a controller medication used for long-term asthma management, not for acute episodes. Choice D is incorrect as shaking the beclomethasone inhaler before use helps ensure proper medication dispersion for effective inhalation.
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