ATI LPN
Cardiovascular Exam Questions Quizlet Questions
Question 1 of 5
Which of the following is not true of the ventricles?
Correct Answer: D
Rationale: All statements about the ventricles provided here are true.
Question 2 of 5
When trying to stop arterial bleeding by applying pressure, why is it necessary to apply pressure between the bleeding part and the heart?
Correct Answer: A
Rationale: Arterial bleeding must be stopped by applying pressure between the heart and the injury because blood flows from the heart through arteries to the site, and this interrupts the supply.
Question 3 of 5
An outpatient who has chronic heart failure returns to the clinic after 2 weeks of therapy with metoprolol (Toprol XL). Which assessment finding is most important for the nurse to report to the health care provider?
Correct Answer: D
Rationale: The patient's BP indicates that the dose of metoprolol may need to be decreased because of hypotension. Bradycardia is a frequent adverse effect of β-adrenergic blockade, but the rate of 56 is not unusual though it may need to be monitored. β-Adrenergic blockade initially will worsen symptoms of heart failure in many patients and patients should be taught that some increase in symptoms, such as fatigue and edema, is expected during the initiation of therapy with this class of drugs.
Question 4 of 5
Blockade of which of the following will cause ischemia of the infundibulum?
Correct Answer: B
Rationale: The right conus artery supplies the infundibulum (conus arteriosus) of the right ventricle; its blockade causes ischemia there.
Question 5 of 5
In which phase of ventricular muscle action potential is the potassium permeability the highest?
Correct Answer: D
Rationale: Phase 3 (repolarization) has the highest potassium permeability as potassium channels open to restore resting potential.