ATI RN
ATI Pharmacology Made Easy 4.0 Infection Questions
Question 1 of 5
Androgen is secreted by
Correct Answer: C
Rationale: Androgens, primarily testosterone, are secreted by the testes' Leydig cells, stimulated by luteinizing hormone (LH) from the pituitary, making the testes the direct source. Follicle-stimulating hormone (FSH) from the pituitary regulates sperm production, not androgen secretion. Gonadotropin-releasing hormone (GnRH) from the hypothalamus triggers pituitary LH and FSH release, indirectly influencing androgen production, not secreting it. The pituitary releases LH and FSH, not androgens itself. The testes' role as the endocrine organ producing androgens is clear, driven by LH, and is fundamental to male reproductive and secondary sexual characteristics, setting it apart from regulatory hormones in the hypothalamic-pituitary-gonadal axis.
Question 2 of 5
Pethidine:
Correct Answer: D
Rationale: Pethidine has less potency than morphine and can reduce uterine activity at term.
Question 3 of 5
A patient with elevated lipid levels has a new prescription for nicotinic acid (niacin). The nurse informs the patient that which adverse effects may occur with this medication?
Correct Answer: A
Rationale: Niacin, also known as nicotinic acid, is commonly associated with adverse effects of pruritus (itching) and cutaneous flushing (redness and warmth of the skin). These side effects are usually dose-related and can be alleviated by taking aspirin or a nonsteroidal anti-inflammatory drug (NSAI
D) 30 minutes before taking niacin. It's important for the nurse to inform the patient about these common side effects so that they are aware of what to expect and how to manage them if they occur.
Question 4 of 5
At what point does atropine hit its peak for IM injections?
Correct Answer: A
Rationale: Atropine given via intramuscular (IM) injection typically reaches its peak effects within 15 to 50 minutes after administration. The onset of action is relatively rapid, with faster absorption and distribution compared to oral administration. The effects of atropine can be seen within minutes, reaching peak concentration within the specified time frame. This rapid onset is important clinically when atropine is used to treat conditions such as bradycardia or nerve agent poisoning where a quick response is needed.
Question 5 of 5
At 4 to 5 half lives the concentration of drug in blood is
Correct Answer: A
Rationale: The concentration of a drug in the blood decreases by half with each half-life. Thus, after 4 to 5 half-lives, the amount of drug remaining in the blood would be approximately 6.25% to 3.125% of the original concentration. This translates to the concentration being around 50% or less, making the correct answer A. 50%.