ATI LPN
Questions About the Cardiovascular System Questions
Question 1 of 5
The heart valves do all of the following, EXCEPT:
Correct Answer: C
Rationale: The heart valves manage blood flow direction, not the timing or strength of contractions, which is controlled by the heart's electrical system.
Question 2 of 5
45 yo female with history of moderate aortic regurgitation (documented by echo) and HTN was seen recently in the office. She is clinically stable and her BP is controlled. She has no other significant medical history. 1 week later her dentist's office calls you and requests recommendations regarding antibiotic prophylaxis prior to having a dental procedure performed. You recommend:
Correct Answer: A
Rationale: Per AHA guidelines, antibiotic prophylaxis is not required for moderate aortic regurgitation without prosthetic valves or prior endocarditis.
Question 3 of 5
Mutations of the ATP7B gene is characteristic of which of the following?
Correct Answer: D
Rationale: ATP7B gene mutations cause Wilson disease, leading to copper accumulation; the document error (e) is corrected to (d).
Question 4 of 5
In the patient with cancer, which of the following are correct regarding fever?
Correct Answer: D
Rationale: All options are correct: fever in cancer patients can stem from infections (common due to immunosuppression), unusual pathogens (due to treatment effects), endogenous organisms (e.g., gut flora translocation), or the tumor itself (paraneoplastic fever). Thus, 'All of the above' is correct, shifted to D.
Question 5 of 5
During the 'window phase' of acute HIV infection, individuals:
Correct Answer: D
Rationale: During the window phase, individuals are highly infectious despite often being asymptomatic.