ATI RN
Cardiovascular System Exam Questions And Answers
1. What is a condition where a blood clot forms in a deep vein, usually in the legs, and can lead to serious complications if it travels to the lungs?
- A. Deep vein thrombosis (DVT)
- B. Pulmonary embolism
- C. Varicose veins
- D. Raynaud's disease
Correct answer: A
Rationale: The correct answer is A, Deep vein thrombosis (DVT). Deep vein thrombosis occurs when a blood clot forms in a deep vein, usually in the legs. If the clot dislodges and travels to the lungs, it can lead to a serious condition called a pulmonary embolism. Choice B, pulmonary embolism, is incorrect as it is the consequence of a DVT clot traveling to the lungs, not the initial condition. Choices C and D, varicose veins, and Raynaud's disease, respectively, are unrelated conditions to the formation of blood clots in deep veins.
2. What is a device that delivers a fine spray of medication into the airways?
- A. Nebulizer
- B. Inhaler
- C. Oxygen concentrator
- D. Peak flow meter
Correct answer: A
Rationale: A nebulizer is a device that converts liquid medication into a fine mist, allowing it to be inhaled directly into the lungs. This makes it the correct answer to the question. Choice B, an inhaler, delivers medication in a different form - as a pressurized dose that needs to be inhaled. Choice C, an oxygen concentrator, is used to deliver oxygen to patients with breathing difficulties but does not deliver medication. Choice D, a peak flow meter, is used to measure how fast air can be blown out of the lungs and is not involved in delivering medication.
3. Which condition is characterized by the weakening and rupture of the walls of the alveoli in the lungs, reducing the surface area available for gas exchange?
- A. Emphysema
- B. Bronchitis
- C. Atelectasis
- D. Pulmonary fibrosis
Correct answer: A
Rationale: The correct answer is A, Emphysema. Emphysema is a lung condition where the walls of the alveoli become weak and rupture, reducing the surface area available for gas exchange. This leads to shortness of breath. Choice B, Bronchitis, is characterized by inflammation of the bronchial tubes, not the alveoli. Choice C, Atelectasis, involves the collapse of a part or entire lung, not the weakening and rupture of alveolar walls. Choice D, Pulmonary fibrosis, is a condition where lung tissue becomes thickened and stiff, not involving the weakening and rupture of alveoli walls.
4. What is a condition where the heart beats too slowly, reducing the amount of blood pumped to the body?
- A. Bradycardia
- B. Tachycardia
- C. Atrial fibrillation
- D. Ventricular fibrillation
Correct answer: A
Rationale: Bradycardia is the correct answer. It is a condition characterized by a slow heart rate, which reduces the amount of blood pumped to the body. This can lead to symptoms like fatigue and dizziness. Choice B, Tachycardia, is the opposite condition where the heart beats too fast. Choices C and D, Atrial fibrillation and Ventricular fibrillation, refer to irregular and potentially life-threatening rapid heart rhythms involving the atria and ventricles respectively, not a slow heart rate.
5. The client on warfarin has an INR of 1.2. What is the nurse’s priority action?
- A. Increase the dose of warfarin
- B. Administer vitamin K
- C. Monitor for signs of bleeding
- D. Hold the next dose and notify the healthcare provider
Correct answer: A
Rationale: The correct answer is to increase the dose of warfarin. An INR of 1.2 is below the therapeutic range for a client on warfarin, indicating that the dose is subtherapeutic. The priority action in this situation is to adjust the dose to achieve the target therapeutic INR range (usually 2-3) to prevent thromboembolic events. Administering vitamin K is not necessary as the INR is low, and there are no signs of bleeding. Monitoring for signs of bleeding is important but not the priority in this case since the INR is subtherapeutic. Holding the next dose and notifying the healthcare provider would delay the intervention needed to adjust the dose and achieve the therapeutic range.
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