When displayed by the patient, which symptom would be most indicative to the nurse to withhold a recently prescribed nonselective beta-adrenergic blocker?
Hyperglycemia
Dizziness
Peripheral edema
Wheezing
The Correct Answer is D
Choice A reason: This is not a symptom that would indicate withholding a nonselective beta-adrenergic blocker. Hyperglycemia is a high level of glucose in the blood, which can be caused by diabetes or other conditions. Nonselective beta-adrenergic blockers do not affect blood glucose levels directly, but they may mask the signs of hypoglycemia (low blood glucose) in diabetic patients.
Choice B reason: This is not a symptom that would indicate withholding a nonselective beta-adrenergic blocker. Dizziness is a common side effect of many medications, especially those that lower blood pressure. Nonselective beta-adrenergic blockers can cause dizziness by reducing the heart rate and cardiac output, but this is usually mild and transient.
Choice C reason: This is not a symptom that would indicate withholding a nonselective beta-adrenergic blocker. Peripheral edema is swelling of the ankles, feet, or legs, which can be caused by heart failure, kidney disease, or venous insufficiency. Nonselective beta-adrenergic blockers do not cause peripheral edema, but they may worsen it in patients with heart failure.
Choice D reason: This is a symptom that would indicate withholding a nonselective beta-adrenergic blocker. Wheezing is a high-pitched sound that occurs when breathing is obstructed, usually due to asthma or chronic obstructive pulmonary disease (COPD). Nonselective beta-adrenergic blockers can aggravate or cause wheezing by blocking the beta-2 receptors in the lungs, which normally cause bronchodilation (widening of the airways). Therefore, nonselective beta-adrenergic blockers are contraindicated in patients with asthma or COPD.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: This is not the definition of ejection fraction. The percentage of blood that leaves the heart in a minute is related to the cardiac output, which is the product of the heart rate and the stroke volume.
Choice B reason: This is the correct definition of ejection fraction. It is the ratio of the stroke volume (the amount of blood pumped by the left ventricle) to the end-diastolic volume (the amount of blood in the left ventricle at the end of diastole). It is a measure of the efficiency of the heart and reflects the contractility of the cardiac muscle.
Choice C reason: This is not the definition of ejection fraction. The amount of blood that leaves the heart with each beat is the stroke volume, which is one of the factors that determine the ejection fraction.
Choice D reason: This is not the definition of ejection fraction. The amount of blood that leaves the heart in a minute is the cardiac output, which is influenced by the ejection fraction, but not equivalent to it.
Correct Answer is B
Explanation
Choice A reason: Infection in the blood is not empyema. It is sepsis, which is a life-threatening condition that occurs when the body's response to infection causes tissue damage, organ failure, or death.
Choice B reason: Infection in the pleural space is empyema. It is a collection of pus in the space between the lungs and the chest wall, usually caused by a bacterial infection that spreads from the lungs or the chest cavity.
Choice C reason: Exudative bronchitis is not empyema. It is a type of bronchitis that involves inflammation and excess mucus production in the bronchi, the airways that carry air to the lungs.
Choice D reason: Infection localized in the lung is not empyema. It is pneumonia, which is an inflammation of the lung tissue, usually caused by a viral or bacterial infection that affects the air sacs or the interstitial tissue.
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