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 B

Explanation

Choice A Reason:
Blood sugar levels can impact neurological function, leading to symptoms like slurred speech, but this is less likely to be the immediate cause of the expressionless affect and red conjunctivae. While important, this question may not address the most urgent concern first. client's symptoms.

Choice B Reason:
"Been sleeping well?" Poor sleep could contribute to slurred speech and an expressionless affect. Asking about sleep might help identify if sleep deprivation is contributing to the symptoms.
Choice C Reason:
Not eating could lead to hypoglycemia, which might cause slurred speech, but it is less likely to explain the red conjunctivae and expressionless affect. This question is important but might not address the immediate cause of the symptoms.
Choice D Reason:
Depression could lead to an expressionless facial affect, but it is less likely to explain slurred speech and red conjunctivae. This question addresses one possible cause but doesn't cover the immediate physical symptoms.

A. Observe pupil size when focusing on a near object and then a far object. B. Compare the shape of each of the pupils bilaterally with normal room light. C. Note the speed of pupil constriction when a penlight is shined into the eye. D. Determine if dilation of the pupils occurs when the room is darkened.

Correct Answer is A

Explanation

Choice A Reason:
Observing pupil size when focusing on a near object and then a far object is correct. This choice is correct because it directly assesses the pupillary reaction to accommodation, which refers to the changes in pupil size that occur when the eyes shift focus between near and far objects. Observing the pupils while the client focuses on a near object and then a far object allows the nurse to assess how the pupils constrict (become smaller) or dilate (become larger) in response to changes in focus, providing valuable information about the client's accommodation reflex.
Choice B Reason:
Comparing the shape of each of the pupils bilaterally with normal room light is incorrect. While comparing the shape of each pupil bilaterally with normal room light is a valid assessment technique for evaluating pupillary size and symmetry, it does not specifically assess the pupillary reaction to accommodation. Therefore, this choice is not as directly relevant to assessing accommodation reflex as choice A.
Choice C Reason:
Noting the speed of pupil constriction when a penlight is shined into the eye is incorrect. This choice refers to assessing the pupillary light reflex, which involves observing the speed and extent of pupil constriction in response to a bright light stimulus. While this assessment is important for evaluating the pupillary response to light, it does not specifically assess accommodation, which involves changes in pupil size in response to changes in focus between near and far objects. Therefore, this choice is not directly relevant to assessing accommodation reflex.
Choice D Reason:
Determining if dilation of the pupils occurs when the room is darkened is incorrect. This choice involves assessing the pupillary response to changes in ambient light levels, which is known as the pupillary light reflex. While assessing pupil dilation in response to darkness is important for evaluating the pupillary response to changes in light, it does not specifically assess accommodation reflex. Therefore, this choice is not directly relevant to assessing accommodation reflex.

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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?

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Naxlex Comprehensive Predictor Exams

The nurse is performing an initial assessment of a client who has an expressionless facial affect, slurred speech, and red conjunctivae. Which question should the nurse ask first? "Have you..."

Correct Answer is B

Explanation

To assess a client's pupillary reaction to accommodation, what action should the nurse take?

Correct Answer is A

Explanation

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