ATI LPN
100 Questions on the Cardiovascular System PDF Questions
Question 1 of 5
Which one of the following is a relative contraindication of thrombolytic agents?
Correct Answer: C
Rationale: Severe hypertension is a relative contraindication due to bleeding risk.
Question 2 of 5
Without SA node input, what would the heart rate be?
Correct Answer: A
Rationale: The intrinsic rate of the AV node is about 40-60 bpm, but without any nodal input, the heart's autorhythmic cells could still generate a rhythm around 50 bpm.
Question 3 of 5
Hypertension can decrease cardiac output by directly causing an increase in___
Correct Answer: A
Rationale: Hypertension increases afterload, making it harder for the ventricles to eject blood, which raises end systolic volume and reduces stroke volume.
Question 4 of 5
A 56-year-old male smoker has been coughing up thick yellow green material for about the last three years, on and off, but more frequently for at least half of the year. Physical examination reveals some ronchi, but no crackles. His fingernail beds are slightly blue, and a pulse oximeter reveals an oxygen saturation of 88%. He does not report having difficulty breathing. Of the following, what is the most likely diagnosis?
Correct Answer: B
Rationale: Chronic bronchitis, common in smokers, is defined by chronic productive cough for ≥3 months over 2 years, with hypoxia (88% saturation) and rhonchi from mucus.
Question 5 of 5
When teaching how lisinopril helps lower the patient's blood pressure, which mechanism of action would the nurse explain?
Correct Answer: C
Rationale: Lisinopril is an angiotensin-converting enzyme inhibitor that inhibits the conversion of angiotensin I to angiotensin II, which reduces angiotensin II-mediated vasoconstriction and sodium and water retention.