ATI RN
Cardiovascular System Exam Questions Pdf
1. What procedure involves using a catheter to create a small scar in the heart tissue to block abnormal electrical signals and restore normal heart rhythm?
- A. Catheter ablation
- B. Angioplasty
- C. Stent placement
- D. Valve replacement
Correct answer: A
Rationale: Catheter ablation is the correct answer. During catheter ablation, a catheter is used to create a small scar in the heart tissue to block abnormal electrical signals, thereby restoring a normal heart rhythm. Choices B, C, and D are incorrect because angioplasty is a procedure to widen narrowed or obstructed arteries, stent placement involves inserting a mesh tube to support a weak artery, and valve replacement is the surgical procedure of replacing a heart valve, none of which match the description provided in the question.
2. The nurse is instructing a client to perform a testicular self-examination (TSE). What information should the nurse provide about the procedure?
- A. To examine the testicles while lying down
- B. That the best time for the examination is after a shower
- C. To gently feel the testicle with one finger to feel for a growth
- D. That testicular self-examinations should be done at least every 6 months
Correct answer: B
Rationale: The correct answer is B. The best time to perform a testicular self-examination is after a warm shower when the scrotal skin is relaxed. This makes it easier to detect any abnormalities. Choice A is incorrect because the examination should ideally be done while standing. Choice C is incorrect as the client should use both hands to roll each testicle between the thumb and fingers to feel for any lumps or changes in size. Choice D is incorrect because testicular self-examinations are recommended to be done monthly, not every 6 months, to monitor changes in the testicles.
3. Which of the following types of vitamin or mineral deficiency can cause megaloblastic anemia and is associated with lower extremity paresthesias?
- A. Vitamin B12
- B. Folate
- C. Iron
- D. Vitamin K
Correct answer: Vitamin B12
Rationale: The correct answer is Vitamin B12. Vitamin B12 deficiency can lead to megaloblastic anemia, a condition characterized by the production of abnormally large and immature red blood cells. Lower extremity paresthesias, such as tingling or numbness, are common neurological symptoms associated with vitamin B12 deficiency. Folate deficiency can also cause megaloblastic anemia but is not typically linked to lower extremity paresthesias. Iron deficiency leads to microcytic anemia, not megaloblastic anemia. Vitamin K deficiency is associated with bleeding tendencies, not megaloblastic anemia or paresthesias.
4. Which is the priority nursing assessment when providing care for an infant at risk for dehydration?
- A. Urine output
- B. Urine specific gravity
- C. Vital signs
- D. Daily weight
Correct answer: D
Rationale: The correct answer is Daily weight. Daily weight is a crucial assessment in infants at risk for dehydration because changes in weight can indicate fluid balance and dehydration status. It is essential to monitor daily weight to promptly identify and manage dehydration in infants.
5. A nurse is preparing to administer dopamine hydrochloride 4 mcg/kg/min via continuous infusion. The client weighs 80 kg. How many mL/hr should the nurse set the IV infusion to deliver?
- A. 6 mL/hr
- B. 8 mL/hr
- C. 12 mL/hr
- D. 16 mL/hr
Correct answer: A
Rationale: To calculate the correct rate, use the formula: (4 mcg/kg/min * 80 kg) / 800 mcg in 250 mL = 6 mL/hr. This calculation is based on the dose ordered (4 mcg/kg/min) multiplied by the patient's weight in kg (80 kg), divided by the concentration of the drug available (800 mcg in 250 mL) to be infused over 1 hour. Therefore, the correct answer is 6 mL/hr. Choices B, C, and D are incorrect as they do not reflect the accurate calculation based on the provided information.
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