ATI RN
100 Questions on the Cardiovascular System Questions
Question 1 of 5
A form of circulatory shock common in young children with severe diarrhea or vomiting is
Correct Answer: A
Rationale: Hypovolemic shock (A) results from fluid loss (e.g., diarrhea), reducing blood volume. Anaphylactic (B) is allergic, obstructive (C) is blockage, hemorrhagic (D) is bleeding.
Question 2 of 5
The earliest organ to form and begin function within the developing human is the
Correct Answer: D
Rationale: The heart (D) forms and beats by ~3-4 weeks, the earliest functioning organ.
Question 3 of 5
Which of the following adverse reactions should the nurse assess in a 70-year-old adult who is receiving a continuous infusion of lidocaine?
Correct Answer: C
Rationale: Lidocaine (C) can cause confusion, especially in older adults, as a CNS side effect. Hypertension (A), osteoarthritis (B), and visual changes (D) are unrelated.
Question 4 of 5
Arteries are blood vessels that
Correct Answer: C
Rationale: Arteries (C) lead away from the heart, carrying oxygenated blood (A) except pulmonary arteries (deoxygenated, B). Veins travel to the heart (D).
Question 5 of 5
The following statements are made about the variety of thermoregulatory mechanisms in the body. A. Human voluntary activity is decreased in cold. B. There is a cutaneous vasodilation by heat. C. There is an increased secretion of epinephrine and nor-epinephrine in cold. D. There is a decreased heat production in cold. Choose the combination of all correct statements about thermoregulatory mechanisms:
Correct Answer: B
Rationale: A is true (cold reduces activity to conserve heat), B is true (heat causes cutaneous vasodilation to dissipate heat), C is true (cold increases epinephrine/norepinephrine for heat production), but D is false (heat production increases in cold). B (B and C) is the best fit for correct statements.