The nurse observes that a client is experiencing melena. Which serum laboratory test should the nurse monitor in response to this finding?

White blood cell count (WBC).

Glucose.

Blood urea nitrogen (BUN).

Hematocrit.

Answer and Explanation

The Correct Answer is D

Choice A Reason:
White blood cell count (WBC) is inappropriate. White blood cell count is typically monitored to assess for signs of infection or inflammation. While it's important to monitor WBC count in certain situations, such as suspected infection, melena itself is not directly indicative of an increased risk of infection. Therefore, monitoring WBC count may not be the most immediate response to the finding of melena.
Choice B Reason:
Glucose is inappropriate. Glucose monitoring is essential for patients with diabetes or those at risk of hypoglycemia or hyperglycemia. However, melena is not directly related to glucose metabolism or regulation. Therefore, monitoring glucose levels would not be the most relevant response to the finding of melena.
Choice C Reason:
Blood urea nitrogen (BUN) is inappropriate. Blood urea nitrogen is often monitored to assess kidney function and hydration status. While severe bleeding can potentially lead to hypovolemia and prerenal azotemia (elevated BUN due to decreased renal perfusion), monitoring BUN would not be the immediate response to the finding of melena. Instead, assessing for signs of hypovolemia and monitoring other markers of blood loss, such as hematocrit, would be more appropriate.
Choice D Reason:
Hematocrit is appropriate. Melena refers to the passage of black, tarry stools containing blood that has been digested. It indicates upper gastrointestinal bleeding, typically from the stomach or upper small intestine. Monitoring the hematocrit level is important because significant bleeding, as indicated by melena, can lead to a decrease in the hematocrit level due to the loss of red blood cells and plasma volume. Monitoring the hematocrit helps assess the severity of the bleeding and guides treatment decisions, such as the need for blood transfusions. Therefore, the nurse should monitor the hematocrit level in response to the finding of melena.

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Correct Answer is D

Explanation

Choice A Reason:
Syncope is incorrect. Syncope, or fainting, can occur in individuals experiencing severe respiratory distress or hypoxia. Pursed-lip breathing is often used as a technique to manage dyspnea and improve oxygenation, which can help prevent syncope by ensuring adequate ventilation and oxygen delivery to the body's tissues. However, syncope is not the primary concern associated with the observation of pursed-lip breathing; instead, it is a potential consequence of inadequate oxygenation.
Choice B Reason:
Acute pain is not directly related to the observation of pursed-lip breathing. Pursed-lip breathing is a technique used to manage dyspnea and improve ventilation efficiency in individuals with respiratory conditions such as chronic obstructive pulmonary disease (COPD) or asthma exacerbation. While pain can exacerbate respiratory distress in some cases, the primary focus when observing pursed-lip breathing is to assess and address respiratory status rather than pain management.
Choice C Reason:
Tetany is incorrect. Tetany, characterized by muscle spasms due to low calcium levels, is not directly associated with the observation of pursed-lip breathing. Pursed-lip breathing is a respiratory technique used to manage dyspnea and improve ventilation in individuals with respiratory conditions such as COPD or asthma. While respiratory distress can lead to various physiological responses, tetany is not a typical manifestation observed in individuals using pursed-lip breathing.
Choice D Reason:
Dyspnea is correct. Pursed-lip breathing is a technique often used by individuals with respiratory conditions to relieve shortness of breath and improve breathing efficiency. The primary reason for using pursed-lip breathing is to help alleviate dyspnea, or difficulty breathing, by promoting more effective exhalation and preventing airway collapse during expiration. Monitoring for dyspnea is crucial in this situation to assess the client's respiratory status, including the severity of breathing difficulty and any associated symptoms, and to guide further interventions to address the underlying cause of dyspnea. While syncope (fainting), acute pain, and tetany (muscle spasms due to low calcium levels) are potential concerns in certain clinical contexts, they are not directly associated with the observation of pursed-lip breathing. Therefore, dyspnea is the most relevant problem for the nurse to monitor in this scenario.

A. Excoriation. B. Papules. C. Wheals. D. Fissuring.

Correct Answer is C

Explanation

Choice A Reason:
Excoriation is incorrect. Excoriation refers to scratch marks or abrasions on the skin caused by scratching or rubbing. While excoriation can occur as a result of scratching due to itching caused by an allergic reaction, it is not a specific characteristic of an allergic reaction to an insect bite. However, it may develop secondary to the itching associated with insect bites.
Choice B Reason:
Papules are incorrect. Papules are small, raised bumps on the skin that can have various causes, including insect bites. While papules can sometimes accompany an allergic reaction to insect bites, they are not as characteristic as wheals (hives) in such reactions. Papules may also represent other skin conditions or reactions, so they are not as specific to allergic reactions as wheals.
Choice C Reason:
Wheals are correct. Wheals, also known as hives or urticaria, are raised, red, itchy areas of the skin that often occur as part of an allergic reaction to insect bites, medications, foods, or other allergens. Wheals are typically transient and can vary in size and shape. Excoriation (choice A) refers to scratch marks or abrasions on the skin caused by scratching or rubbing.
Choice D Reason:
Fissuring is incorrect. Fissuring refers to deep cracks or splits in the skin's surface. Fissures are not typically associated with allergic reactions to insect bites. Instead, they may occur in conditions such as eczema, psoriasis, or severe dry skin. Therefore, while skin fissuring may occur in some skin conditions, it is not a typical finding in allergic reactions to insect bites.

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The nurse observes that a client is experiencing melena. Which serum laboratory test should the nurse monitor in response to this finding?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is C

Explanation

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