ATI RN
ATI Proctored Pharmacology Quizlet Questions
Question 1 of 5
What is pharmacodynamics?
Correct Answer: B
Rationale: Pharmacodynamics refers to the study of the biochemical, physiological, and behavioral effects of drugs on the body and their mechanisms of action. It specifically focuses on the drugs' actions at the receptor site and how these actions lead to specific responses in the body. This includes understanding how drugs interact with target receptors, enzymes, and other molecular targets within the body to produce their effects. Pharmacodynamics also involves studying the relationship between the drug concentration and the magnitude of the response it elicits, as well as factors influencing the variability in individual responses to a drug. In summary, pharmacodynamics is crucial for understanding how drugs work in the body and how they produce their therapeutic or adverse effects.
Question 2 of 5
Antifibrinolytic drugs:
Correct Answer: A
Rationale: Antifibrinolytic drugs work by inhibiting the activity of plasmin, an enzyme responsible for the breakdown of fibrin clots. By blocking the activation of plasminogen to form plasmin, these drugs help stabilize the formed fibrin clot, thus promoting hemostasis and preventing excessive bleeding. This mechanism is particularly useful in conditions where increased fibrinolysis is a concern, such as in surgical procedures or certain bleeding disorders. Examples of antifibrinolytic drugs include tranexamic acid and aminocaproic acid.
Question 3 of 5
Approximately how many milligrams of aspirin are contained in 5grams tablet?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
Zanamivir is ordered for a patient with which disorder?
Correct Answer: C
Rationale: Zanamivir is an antiviral medication used to treat influenza, not herpes simplex virus or hepatitis B. Varicella-zoster virus is the cause of chickenpox and shingles, which are treated with other antivirals like acyclovir. This question seems to have an error, as zanamivir is not used for any of the listed conditions.
Question 5 of 5
What are the therapeutic and adverse effects associated with the adrenergic blocking agents related to?
Correct Answer: A
Rationale: The therapeutic and adverse effects associated with these drugs are related to their adrenergic-receptor-site specificity; that is, the ability to react with specific adrenergic receptor sites without activating them, thus preventing the typical manifestations of sympathetic nervous system (SNS) activation. By occupying the adrenergic receptor site, they prevent norepinephrine released from the nerve terminal or from the adrenal medulla from activating the receptor, thus blocking the SNS effects. The nurse should understand the mechanism of action of adrenergic blocking agents to ensure safe and effective administration.