ATI RN
Cardiovascular System Practice Exam
1. What term refers to the degree of myocardial fiber stretch before contraction, related to the volume of blood distending the ventricles at the end of diastole, and determined by the amount of venous return?
- A. Preload
- B. Afterload
- C. Contractility
- D. Ejection fraction
Correct answer: A
Rationale: The correct answer is A: Preload. Preload is the degree of myocardial fiber stretch before contraction, influenced by the volume of blood returning to the heart. This parameter is related to the amount of blood in the ventricles at the end of diastole. Choice B, Afterload, refers to the pressure or resistance that the ventricles must overcome to eject blood. Choice C, Contractility, is the intrinsic ability of the heart muscle to contract. Choice D, Ejection fraction, is the percentage of blood pumped out of the ventricles with each contraction.
2. A client had a bronchoscopy 2 hours ago and asks for a drink of water. Which action should the nurse take next?
- A. Call the healthcare provider to request a prescription for food and water.
- B. Provide the client with ice chips instead of a drink of water.
- C. Assess the client's gag reflex before giving any food or water.
- D. Let the client have a small sip to assess swallowing ability.
Correct answer: C
Rationale: After a bronchoscopy, a topical anesthetic affects the gag reflex. Therefore, the nurse should assess the client's gag reflex before providing any food or water to ensure its return. This assessment is crucial to prevent aspiration or choking risk in the client.
3. A healthcare provider is reviewing the health history of a client who is starting therapy with tamoxifen. The healthcare provider should recognize that tamoxifen is contraindicated in which of the following clients?
- A. A client with a history of deep-vein thrombosis
- B. A client with a history of migraine headaches
- C. A client with a history of hypertension
- D. A client with a history of anemia
Correct answer: A
Rationale: Tamoxifen is contraindicated in clients with a history of thromboembolic events, such as deep-vein thrombosis, due to the increased risk of blood clots. The estrogenic effects of tamoxifen can further increase the risk of thromboembolic events, making it unsafe for individuals with a history of deep-vein thrombosis. Choice B (migraine headaches), Choice C (hypertension), and Choice D (anemia) are not contraindications for tamoxifen therapy. Migraine headaches, hypertension, and anemia do not pose the same risk of adverse effects related to blood clot formation as deep-vein thrombosis does.
4. A nurse is caring for a client who has chronic kidney disease and reports nausea. The nurse should identify that this client is at risk for which of the following imbalances?
- A. Metabolic alkalosis
- B. Metabolic acidosis
- C. Respiratory alkalosis
- D. Respiratory acidosis
Correct answer: B
Rationale: The correct answer is B: Metabolic acidosis. Clients with chronic kidney disease are at risk for metabolic acidosis because the kidneys are unable to effectively excrete acids, leading to an accumulation of acid in the body. This metabolic imbalance can result in symptoms like nausea. Choices A, C, and D are incorrect. Metabolic alkalosis is not typically associated with chronic kidney disease. Respiratory alkalosis is more commonly seen in conditions such as hyperventilation. Respiratory acidosis, on the other hand, is often linked to conditions affecting the lungs or respiratory system, not primarily kidney disease.
5. Upon admission, a client diagnosed with major depressive disorder needs the nurse to implement which of the following interventions first?
- A. Administer an antidepressant medication.
- B. Establish a trusting relationship with the client.
- C. Develop a plan of care with the client.
- D. Teach the client about the importance of medication compliance.
Correct answer: B
Rationale: The initial intervention the nurse should prioritize is to establish a trusting relationship with the client. Building trust is fundamental in fostering effective therapeutic communication and providing quality care. This foundational step lays the groundwork for further assessment, collaboration on care plans, and promoting treatment adherence. Administering medication or discussing compliance should come after the establishment of trust to ensure the client feels supported and understood.
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