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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason:
Epigastric region is correct. The epigastric region is the area of the abdomen located between the lower part of the ribcage and the navel (umbilicus). Pain localized in the middle section of the abdomen below the xiphoid process corresponds to the epigastric region. This region encompasses the upper part of the stomach and the lower part of the esophagus, making it a common location for discomfort related to conditions such as gastritis, peptic ulcer disease, or gastroesophageal reflux disease (GERD).
Choice B Reason:
Hypogastric region is incorrect. The hypogastric region is located in the lower part of the abdomen, below the umbilical region. Pain in the hypogastric region typically corresponds to the lower abdomen, around the pubic bone, and may be associated with conditions such as bladder infections, menstrual cramps, or pelvic inflammatory disease.
Choice C Reason:
Hypochondriac region is incorrect. The hypochondriac regions are located on each side of the upper abdomen, beneath the ribs. Pain in the hypochondriac region may be associated with conditions affecting the liver, gallbladder, or spleen, but it does not correspond to the description provided by the client.
Choice D Reason:
Umbilical region is incorrect. The umbilical region is located around the navel (umbilicus) in the center of the abdomen. Pain in the umbilical region may be associated with conditions affecting the small intestine or structures around the navel, such as umbilical hernias. However, it does not specifically correspond to the description of pain below the xiphoid process in the middle section of the abdomen.
Correct Answer is D
Explanation
a. "Motor responses."Motor responses are important in assessing neurological function, but they are typically assessed after determining the client's overall level of consciousness and alertness. Motor responses are usually assessed when the client is unresponsive or has altered consciousness.
b. "Eye opening."Eye opening is part of the Glasgow Coma Scale (GCS) and is an important indicator of neurological function. However, it is generally assessed after determining the client's level of alertness.
c. "Verbal response."Verbal response is another component of the GCS, assessing how the client responds to verbal stimuli. This assessment also follows the initial determination of the client’s alertness.
d. "Level of alertness."The level of alertness is the first and most fundamental aspect to assess because it gives the nurse a baseline understanding of how aware the client is of their surroundings. This assessment sets the stage for further evaluation of motor, eye, and verbal responses. It helps determine the client's ability to interact and respond to stimuli, guiding subsequent assessments.
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