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Cardiovascular System Exam Questions Pdf
1. When administering dobutamine to a client, what is the most important parameter to assess?
- A. Blood pressure
- B. Heart rate
- C. Oxygen saturation
- D. Respiratory rate
Correct answer: A
Rationale: When giving dobutamine, the most critical parameter to assess is blood pressure. Dobutamine is known to cause significant changes in blood pressure, making it essential to closely monitor this parameter to prevent adverse effects. While heart rate is also important to monitor, blood pressure takes precedence due to the potential for hemodynamic instability caused by dobutamine. Oxygen saturation and respiratory rate, although vital signs to monitor, are not typically affected directly by dobutamine administration.
2. The client is on nitroglycerin and reports chest pain. What is the nurse’s priority action?
- A. Administer nitroglycerin as ordered.
- B. Administer morphine as ordered.
- C. Administer aspirin as ordered.
- D. Notify the healthcare provider immediately.
Correct answer: D
Rationale: The correct answer is D: Notify the healthcare provider immediately. If a client on nitroglycerin reports chest pain, the priority action is to notify the healthcare provider immediately. This is crucial to ensure prompt reassessment of the client's condition and treatment plan. Administering nitroglycerin, morphine, or aspirin without consulting the healthcare provider first can be risky as the chest pain may indicate a need for a change in treatment or further evaluation. Administering medications without proper assessment and guidance can lead to complications and is not recommended in this scenario.
3. Which term describes an abnormal heartbeat that can be either too fast or too slow?
- A. Arrhythmia
- B. Bradycardia
- C. Tachycardia
- D. Conductivity
Correct answer: A
Rationale: The correct answer is A: Arrhythmia. Arrhythmia is a broad term that refers to any irregularity in the heart's rhythm, which can manifest as a heartbeat that is too fast (tachycardia), too slow (bradycardia), or irregular. Choice B, Bradycardia, specifically denotes a slow heart rate, while choice C, Tachycardia, refers to a fast heart rate. Choice D, Conductivity, is not the correct term to describe an abnormal heartbeat characterized by speed irregularities.
4. What is a condition where the heart's valves do not function properly, leading to disrupted blood flow within the heart?
- A. Valvular heart disease
- B. Myocarditis
- C. Endocarditis
- D. Aneurysm
Correct answer: A
Rationale: Valvular heart disease is the correct answer. It occurs when the heart's valves malfunction, leading to disrupted blood flow within the heart. Myocarditis refers to inflammation of the heart muscle, not specifically related to valve function. Endocarditis is an infection of the inner lining of the heart chambers and valves, not necessarily caused by valve malfunction. Aneurysm is the abnormal bulging of a blood vessel, not directly related to heart valve function.
5. The nurse is caring for a client on warfarin with an INR of 5.2. What is the most appropriate action?
- A. Administer vitamin K as an antidote.
- B. Hold the next dose of warfarin.
- C. Increase the dose of warfarin.
- D. Monitor the client’s INR closely.
Correct answer: A
Rationale: An INR of 5.2 is elevated, indicating an increased risk of bleeding. Administering vitamin K can help reverse the effects of warfarin, which is the most appropriate action in this situation. Holding the next dose of warfarin is not enough to address the high INR, and increasing the dose would further elevate the INR level. Monitoring the INR closely is important, but in this case, immediate action is needed to counteract the anticoagulant effects of warfarin.
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