ATI RN
Cardiovascular System Test Questions Questions
Question 1 of 5
Oxygen is carried in the blood bonded to:
Correct Answer: A
Rationale: Oxygen is primarily transported in the blood bound to hemoglobin in red blood cells (about 98-99%). Bicarbonate ions carry CO₂, 'protein' is too vague, and carbonic acid is a CO₂ transport intermediate, not oxygen.
Question 2 of 5
A client is admitted with the diagnosis of Myocardial Infarction. Which of the following lab values would be consistent with this diagnosis?
Correct Answer: B
Rationale: Elevated CPK, especially the MB fraction, is a key marker of myocardial infarction due to cardiac muscle damage releasing this enzyme. Other values may be abnormal in other contexts but are not specific to MI.
Question 3 of 5
While the cardiac-vascular nurse preceptor is orienting a graduate nurse on the telemetry unit, a patient experiences cardiac arrest. Which action by the preceptor, during the emergency cardiac care procedure, facilitates the graduate nurse's competence and professional development?
Correct Answer: D
Rationale: Involving the graduate nurse in resuscitation with a basic task (e.g., compressions) builds hands-on skills and confidence in a real scenario, enhancing competence. A delays learning, B removes them from care, and C may exceed initial skill level.
Question 4 of 5
The right side of the heart is responsible for:
Correct Answer: B
Rationale: The heart has two sides with distinct roles. The right side receives deoxygenated blood from the body via the superior and inferior vena cava and pumps it to the lungs through the pulmonary arteries for oxygenation. Choice A describes the left side’s role, Choice C is incorrect as the right side doesn’t pump to the body, and Choice D reverses the oxygenation state. Thus, Choice B is correct.
Question 5 of 5
Which of the following is not a modifiable risk factor for cardiovascular disease?
Correct Answer: C
Rationale: Modifiable risk factors can be altered through lifestyle or treatment: smoking (Choice A) can be quit, high blood pressure (Choice B) can be managed with medication or diet, and obesity (Choice D) can be reduced through exercise and nutrition. Age (Choice C) is a non-modifiable factor, as it naturally increases cardiovascular risk over time and cannot be changed, making it the correct answer.