ATI LPN
Cardiovascular Exam Questions Quizlet Questions
Question 1 of 5
Which of the following does not supply the heart with nutrient- and oxygen-rich blood?
Correct Answer: C
Rationale: The inferior vena cava returns deoxygenated blood to the heart, unlike the coronary arteries, which supply oxygenated blood to the heart muscle.
Question 2 of 5
The nursing lab instructor is teaching student nurses how to take blood pressure. To ensure accurate measurement, the lab instructor would teach the students to avoid which of the following actions?
Correct Answer: B
Rationale: Blood pressures should be taken with the patient seated with arm bare, supported, and at heart level. The patient should not have smoked tobacco or taken caffeine in the 30 minutes preceding the measurement. The patient should rest quietly for 5 minutes before the reading is taken. The cuff bladder should encircle at least $80 \%$ of the limb being measured and have a width of at least $40 \%$ of limb circumference. Using a cuff that is too large results in a lower BP and a cuff that is too small will give a higher BP measurement.
Question 3 of 5
The nurse is reviewing the medication administration record of a patient who takes a variety of medications for the treatment of hypertension. What is a key therapeutic benefit of antihypertensive medications that the nurse should identify?
Correct Answer: B
Rationale: The medications used for treating hypertension decrease peripheral resistance, blood volume, or the strength and rate of myocardial contraction. The original question was a multiple-answer type, but it has been restructured to a single-answer format focusing on a key benefit (decreased peripheral resistance). Antihypertensives do not increase venous return, blood viscosity, or myocardial oxygen demand.
Question 4 of 5
Features of the venous system include all of the following EXCEPT:
Correct Answer: D
Rationale: Valves are generally absent in the cerebral circulation compared to other venous systems.
Question 5 of 5
Heart rate is slowed by:
Correct Answer: D
Rationale: Increased activity of atrial stretch receptors slows heart rate via the Bainbridge reflex.