Nursing Elites

1. What is the abnormal accumulation of fluid in the pleural space, often associated with infections or malignancies?

• A. Pleural effusion
• B. Pneumothorax
• C. Pulmonary edema
• D. Atelectasis

Correct answer: A

Rationale: The correct answer is A, pleural effusion. Pleural effusion is the accumulation of excess fluid between the layers of the pleura outside the lungs, often caused by infections, cancer, or other diseases. Pneumothorax (choice B) is the presence of air in the pleural space, not fluid. Pulmonary edema (choice C) is the accumulation of fluid in the lungs' air sacs and tissue, not in the pleural space. Atelectasis (choice D) is the collapse or closure of a lung resulting in reduced or absent gas exchange.

2. What is a condition where the lung's air sacs (alveoli) are damaged and enlarged, leading to breathlessness?

• A. Emphysema
• B. Chronic bronchitis
• C. Asthma
• D. Pulmonary fibrosis

Correct answer: A

Rationale: Emphysema is the correct answer. It is a condition where the air sacs in the lungs are damaged and enlarged, leading to breathlessness. Chronic bronchitis is characterized by inflammation of the bronchial tubes, not the alveoli. Asthma involves airway inflammation and constriction, not alveolar damage. Pulmonary fibrosis is a condition where lung tissue becomes thickened and scarred, different from the alveolar damage seen in emphysema.

3. What is a condition where the heart beats too fast, reducing its ability to pump blood effectively?

• A. Tachycardia
• B. Bradycardia
• C. Arrhythmia
• D. Ventricular fibrillation

Correct answer: A

Rationale: Tachycardia is the correct answer because it is a condition characterized by a fast heart rate, which can decrease the heart's efficiency in pumping blood. Bradycardia, on the other hand, refers to a slow heart rate, which is the opposite of what is described in the question. Arrhythmia is a general term for any irregularity in the heart's rhythm, not necessarily specifically related to a fast heart rate. Ventricular fibrillation is a life-threatening arrhythmia where the heart's lower chambers quiver instead of pumping blood effectively, but it is not specifically characterized by a fast heart rate.

4. When administering enoxaparin (Lovenox) to a client for DVT prophylaxis, what is the most important lab value to monitor?

• A. Platelet count
• B. PT/INR
• C. aPTT
• D. Hemoglobin

Correct answer: A

Rationale: The correct answer is A: Platelet count. When administering enoxaparin (Lovenox) for DVT prophylaxis, it is crucial to monitor the platelet count as enoxaparin can lead to thrombocytopenia, a decrease in platelet levels. Monitoring the platelet count helps in early detection of this potential adverse effect. Choices B, C, and D are incorrect because PT/INR, aPTT, and hemoglobin levels are not the most important lab values to monitor specifically for enoxaparin administration and DVT prophylaxis.

5. What is the term for the amount of blood ejected by the left ventricle into the aorta per beat, determined by preload, contractility, and afterload?

• A. Stroke volume
• B. Cardiac output
• C. End-diastolic volume
• D. Ejection fraction

Correct answer: A

Rationale: The correct answer is A: Stroke volume. Stroke volume refers to the volume of blood ejected by the left ventricle during each heartbeat. This is determined by preload (the degree of stretch of the cardiac muscle fibers at the end of diastole), contractility (the force of myocardial contraction), and afterload (the pressure or resistance that the ventricle must overcome to eject blood). Choice B, Cardiac output, is the volume of blood pumped by the heart per minute and is calculated by multiplying the heart rate by the stroke volume. Choice C, End-diastolic volume, is the volume of blood in the ventricle at the end of diastole before contraction. Choice D, Ejection fraction, is the proportion of blood pumped out of the ventricle with each contraction, calculated by dividing the stroke volume by the end-diastolic volume.

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