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:
Requesting diagnostic laboratory testing for the client is appropriate action. Enlargement of the thyroid gland can be indicative of various thyroid disorders, including hyperthyroidism, hypothyroidism, or thyroid nodules. Diagnostic laboratory testing, such as thyroid function tests (TFTs), thyroid antibody testing, and possibly thyroid ultrasound, can help identify the underlying cause of the thyroid enlargement. These tests can include assessments of thyroid hormone levels (T3, T4, and TSH), antibodies, and imaging studies. Requesting diagnostic laboratory testing is essential to accurately diagnose the condition and guide appropriate management and treatment.
Choice B Reason:
Obtaining a dietary consultation for nutrition teaching is inappropriate action. While nutrition can play a role in overall thyroid health, obtaining a dietary consultation for nutrition teaching is not the most immediate action to take in response to finding an enlarged thyroid gland during palpation. Dietary consultation may be considered as part of comprehensive care for thyroid disorders, but it does not address the need for further evaluation and diagnosis of the thyroid enlargement.
Choice C Reason:
Instructing the client in the need to use iodized salt is inappropriate action. While iodine deficiency can contribute to thyroid disorders, instructing the client to use iodized salt is not the most immediate action to take in response to finding an enlarged thyroid gland during palpation. Using iodized salt may help prevent iodine deficiency, but it does not address the need for further evaluation and diagnosis of the thyroid enlargement.
Choice D Reason:
Scheduling a follow-up appointment in one month is inappropriate action. While scheduling a follow-up appointment may be necessary for ongoing monitoring and management of thyroid disorders, it is not the most immediate action to take in response to finding an enlarged thyroid gland during palpation. Further evaluation and diagnostic testing should be prioritized to determine the underlying cause of the thyroid enlargement and initiate appropriate treatment.
Correct Answer is D
Explanation
Choice A Reason:
Checking the reading after the other nurse leaves the room is inappropriate. This option suggests waiting until the other nurse leaves to check the reading again. However, there's no guarantee that the discrepancy will resolve itself, and waiting might delay necessary intervention if there is indeed a pulse deficit. Therefore, this option does not address the immediate need for clarification.
Choice B Reason:
Documenting a pulse deficit of 16 beats per minute is inappropriate. While there appears to be a difference between the apical and radial pulse readings, it's important to verify the accuracy of the measurements before documenting a pulse deficit. Documenting without confirmation could lead to inaccurate information in the patient's medical record.
Choice C Reason:
Reporting the results to the healthcare provider without confirming the accuracy of the measurements may lead to unnecessary concern or intervention. It's essential to ensure that the findings are accurate before reporting them to the healthcare provider.
Choice D Reason:
Repeating the assessment to obtain another reading is appropriate. This option prioritizes patient safety by acknowledging the need to confirm the accuracy of the measurements. Repeating the assessment allows the nurses to ensure consistency and reliability in their findings before taking further action or reporting to the healthcare provider.
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