ATI RN
Pharmacology Across the Lifespan Quizlet Questions
Question 1 of 5
Warfarin's primary mechanism of action is inhibition of the synthesis of vitamin K dependent clotting factors. These factors include which of the following?
Correct Answer: A
Rationale: The correct answer is A because warfarin inhibits the synthesis of vitamin K dependent clotting factors, including Factors II, IX, and X, as well as proteins C and S. These specific factors are crucial for the blood clotting cascade. Factors VII, VIII, and XII are not directly affected by warfarin, making options B and C incorrect. Choice D is incorrect as it includes Factor VII, which is not a vitamin K dependent clotting factor. In summary, choice A is correct because it includes all the relevant vitamin K dependent clotting factors that are impacted by warfarin's mechanism of action.
Question 2 of 5
Below question: don't know the correct combination. Below is what was picked but incorrect. The patient who has been prescribed lithium for a diagnosis of bipolar disorder asked why blood tests are required on a regular basis. Which provider responses demonstrate an understanding of why the patient requires a variety of laboratory tests? Select all that apply
Correct Answer: A
Rationale: The correct answer is A because lithium can affect thyroid function, leading to hypothyroidism. Monitoring thyroid levels is crucial to detect any abnormalities early and adjust treatment accordingly. Choice B, C, and D are incorrect as they do not address the specific reason for requiring regular blood tests in a patient prescribed lithium for bipolar disorder.
Question 3 of 5
ED50 refers to:
Correct Answer: C
Rationale: The correct answer is C: The median effective dose. ED50 refers to the dose of a drug that is required to produce a therapeutic effect in 50% of the population or experimental animals. This is a measure of the potency of a drug. The other choices are incorrect because: A: Half-life of the drug does not specifically refer to ED50. B: Half of the drug dose should be prescribed is not related to ED50, which is about effectiveness, not dosing. D: Half of the drug is eliminated is not the definition of ED50, as it pertains to the dose-response relationship, not elimination.
Question 4 of 5
What is a treatment option for patient who reported small, vascular lesions on his genitals that lasted between 10 and 20 days?
Correct Answer: D
Rationale: The correct answer is D: Acyclovir (Zovirax). The patient's symptoms of small, vascular lesions on the genitals lasting 10-20 days are indicative of a viral infection, likely herpes simplex virus. Acyclovir is an antiviral medication commonly used to treat herpes infections. It works by inhibiting the replication of the virus, reducing the duration and severity of symptoms. Test of cure (A) is not appropriate in this case as the diagnosis is already evident. Three injections of penicillin (B) are used for bacterial infections, not viral. One-time dose of azithromycin (C) is used for bacterial infections like chlamydia or gonorrhea, not viral lesions.
Question 5 of 5
Which of the following drug classes is/are used in initial hypertension management of African American population?
Correct Answer: C
Rationale: The correct answer is C: Thiazide or calcium channel blocker primary. This choice is correct because African Americans tend to respond better to thiazide diuretics and calcium channel blockers in managing hypertension. Thiazide diuretics are recommended as first-line treatment in this population due to their effectiveness and lower risk of adverse effects. Calcium channel blockers are also preferred as they have shown good efficacy and tolerability. Choice A (Clonidine) is incorrect as it is not recommended as a primary treatment option for hypertension. Choice B (Betablockers) is also incorrect as they are not the preferred initial treatment in African American patients due to lower efficacy compared to other drug classes. Choice D (ACE-1 inhibitors) is incorrect as they are not recommended as first-line treatment in this population, as they may be less effective in African Americans compared to other drug classes.