ATI RN
ATI Pharmacology Quizlet
1. 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.
2. A male client recently started taking Haloperidol. Which of the following findings is the highest priority to report to the provider?
- A. Shuffling gait
- B. Neck spasms
- C. Drowsiness
- D. Impotence
Correct answer: B
Rationale: Neck spasms are an indication of acute dystonia, a serious side effect of Haloperidol that can quickly progress to a crisis situation. Immediate medical attention is necessary to prevent complications. Shuffling gait and drowsiness are common side effects of Haloperidol but are not as urgent as neck spasms. Impotence is not typically associated with Haloperidol use. Therefore, identifying neck spasms as the priority finding is crucial for the client's safety.
3. A healthcare provider is caring for several clients who came to the clinic for a seasonal influenza immunization. The provider should identify that which of the following clients is a candidate to receive the vaccine via nasal spray rather than an injection?
- A. 1-year-old who has no health problems
- B. 17-year-old who has a hypersensitivity to Penicillin
- C. 25-year-old who is pregnant
- D. 52-year-old who takes a multivitamin supplement
Correct answer: B
Rationale: The correct answer is B. A 17-year-old can receive the influenza vaccine via nasal spray even if they have a hypersensitivity to penicillin, as this is not a contraindication for the influenza immunization. The nasal spray vaccine (LAIV) is a live attenuated vaccine that is suitable for healthy individuals aged 2-49 years. Pregnancy (choice C) is a contraindication for the nasal spray influenza vaccine. Children under 2 years of age (choice A) are also not candidates for the nasal spray. Taking a multivitamin supplement (choice D) is not a determining factor for the type of influenza vaccine a person should receive.
4. A nurse on a medical-surgical unit administers a hypnotic medication to an older adult client at 2100. The next morning, the client is drowsy and wants to sleep instead of eating breakfast. Which of the following factors should the nurse identify as a possible reason for the client's drowsiness?
- A. Reduced cardiac function
- B. First-pass effect
- C. Reduced hepatic function
- D. Increased gastric motility
Correct answer: C
Rationale: In older adults, reduced hepatic function can lead to prolonged effects of medications metabolized by the liver. This situation can result in increased drug levels in the body, causing drowsiness and other side effects. Adjusting the dosage of the hypnotic medication may be necessary to prevent such adverse effects in older adult clients. Choice A, reduced cardiac function, is not directly related to the metabolism of the medication and is unlikely to cause drowsiness. Choice B, first-pass effect, refers to the initial metabolism of a drug in the liver before it enters circulation, but it is not the cause of drowsiness in this scenario. Choice D, increased gastric motility, does not play a significant role in the metabolism of the medication and is not a likely cause of the client's drowsiness.
5. What is the therapeutic action of Phenytoin?
- A. Antidiabetic
- B. Anticonvulsant
- C. Mood stabilizer
- D. Antianxiety agent
Correct answer: B
Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.
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