ATI LPN
Cardiovascular Med Surg Questions Questions
Question 1 of 5
Isovolumetric contraction is the phase of the cardiac cardiac cycle in which
Correct Answer: D
Rationale: During isovolumetric contraction, ventricular pressure rises rapidly while both the atrioventricular and semilunar valves remain closed, keeping ventricular volume constant until ejection begins.
Question 2 of 5
Which of the following act as blood reservoirs?
Correct Answer: D
Rationale: Veins, with their high capacitance, serve as blood reservoirs.
Question 3 of 5
If damaged, which valve could allow blood to leak back into the right atrium?
Correct Answer: B
Rationale: If the tricuspid valve is damaged, blood may leak back into the right atrium.
Question 4 of 5
Which of the following events will tend to cause a decrease in peripheral resistance?
Correct Answer: B
Rationale: Anemia decreases blood viscosity, thereby reducing peripheral resistance.
Question 5 of 5
The nurse is caring for a patient who is receiving IV furosemide (Lasix) and morphine for the treatment of acute decompensated heart failure (ADHF) with severe orthopnea. Which clinical finding is the best indicator that the treatment has been effective?
Correct Answer: D
Rationale: Because the patient's major clinical manifestation of ADHF is orthopnea (caused by the presence of fluid in the alveoli), the best indicator that the medications are effective is a decrease in dyspnea with the head of the bed at 30 degrees. The other assessment data may also indicate that diuresis or improvement in cardiac output has occurred but are not as specific to evaluating this patient's response.