ATI LPN
Cardiovascular Multiple Choice Questions and Answers Questions
Question 1 of 5
There are two umbilical arteries and one umbilical vein.
Correct Answer: A
Rationale: Fetal circulation includes two umbilical arteries and one umbilical vein.
Question 2 of 5
Which of the following statements is not true of the location of the heart?
Correct Answer: D
Rationale: All statements about the location of the heart provided here are true.
Question 3 of 5
An increase in total plasma volume results from the:
Correct Answer: D
Rationale: Antidiuretic hormone and aldosterone mechanisms both contribute to increased plasma volume.
Question 4 of 5
Which topic will the nurse plan to include in discharge teaching for a patient with heart failure with reduced ejection fraction (HFrEF)?
Correct Answer: D
Rationale: The core measures for the treatment of heart failure established by The Joint Commission indicate that patients with an ejection fraction below 40% should receive an ACE inhibitor to decrease the progression of heart failure. Aerobic exercise may not be appropriate for a patient with this level of heart failure, salt substitutes are not usually recommended because of the risk of hyperkalemia, and the patient will need to see the primary care provider more frequently than annually.
Question 5 of 5
Heart rate is controlled by the cardiac conduction system. Which one of the following is the order of the cardiac conduction system?
Correct Answer: C
Rationale: The sinoatrial node (SA node) is the pacemaker located in the right atrial wall just inferior to the entrance of the superior vena cava. The SA node generates impulses which travel across the atria (followed by atrial systole) and then pause (0.1s) at the atrioventricular node (AV node, sited at the superior part of the inter-ventricular septum) and then to the bundle of His located between the ventricles, splitting into right and left branches down the inter-ventricular septum towards the heart apex, and out to the Purkinje fibres which turn superiorly into the ventricular walls (followed by ventricular systole).