ATI RN
Virtual ATI Pharmacology Assessment Questions
Question 1 of 5
The primary function of luteinizing hormone (LH) in men is to
Correct Answer: D
Rationale: Luteinizing hormone (LH), from the pituitary, stimulates Leydig cells in the testes to produce testosterone, the primary male sex hormone, making its regulation LH's chief role in men. Sperm production is driven by follicle-stimulating hormone (FSH), not LH, though both support fertility. Secondary sex characteristics, like body hair, depend on testosterone, which LH indirectly influences by controlling its synthesis, not directly regulating the traits. Growth of male sex organs relies on androgens, again tied to testosterone, not LH's direct action. Testosterone regulation is LH's specific function, as it triggers the steroidogenesis pathway, critical for male physiology, distinguishing it from FSH's gamete focus and underscoring its hormonal primacy in this context.
Question 2 of 5
Advise patient to avoid taking antacids or antidiarrheals for how long after taking digoxin?
Correct Answer: C
Rationale: Antacids or antidiarrheals should be avoided for at least 4 hours after taking digoxin. These medications can interfere with the absorption of digoxin in the body, thereby reducing its effectiveness. By spacing out the administration of these medications, the risk of decreased digoxin absorption and potential impact on its therapeutic effects can be minimized. It is important for patients to follow this guidance to ensure optimal effectiveness of digoxin therapy.
Question 3 of 5
The ulcerogenic properties of aspirin is caused by the following, except
Correct Answer: B
Rationale: The ulcerogenic properties of aspirin are primarily caused by the inhibition of prostaglandin synthesis, particularly through the inhibition of the enzyme cyclooxygenase-1 (Cox-1). Prostaglandins play a crucial role in maintaining the protective mucus barrier in the stomach lining. When prostaglandin synthesis is inhibited, this protective barrier is compromised, leading to increased susceptibility to damage from the acidic gastric environment. The drug's acidity itself (Choice A), by irritating the stomach lining, can contribute to ulcer formation. Thromboxane inhibition (Choice B) is not directly related to the ulcerogenic properties of aspirin but is more associated with the drug's antiplatelet effects. Cox-1 inhibition (Choice D) is a key factor in aspirin-induced gastrointestinal injury as it disrupts the normal mucosal defense mechanisms.
Question 4 of 5
When administering Phenytoin you should monitor?
Correct Answer: D
Rationale: When administering Phenytoin, it is essential to monitor all of the above: behavior, therapeutic blood levels, and for the development of Steven Johnson syndrome.
Question 5 of 5
Jonas comes into the local blood donation center. He says he is here to donate platelets only today. The nurse knows this process is called:
Correct Answer: C
Rationale: Apheresis is the process of collecting specific blood components, such as platelets, using a specialized machine. This method allows the donor to donate only the needed component while returning the rest of the blood components back to the donor. In this case, when Jonas is donating platelets only, it is known as an apheresis donation. This process is different from the traditional whole blood donation method where all blood components are collected and separated later in a lab.