A nurse is reviewing the BUN and creatinine levels of an older adult patient with chronic kidney disease. The nurse should anticipate which of the following findings?
BUN 8 mg/dL and creatinine 0.7 mg/dL
BUN 45 mg/dL and creatinine 8 mg/dL
BUN 23 mg/dL and creatinine 1.0 mg/dL
BUN 10 mg/dL and creatinine 0.3 mg/dL
The Correct Answer is B
Choice A reason:
A BUN level of 8 mg/dL and a creatinine level of 0.7 mg/dL are within normal ranges for a healthy individual without kidney disease. In chronic kidney disease (CKD), we would expect these values to be elevated due to the kidneys' reduced ability to filter waste products from the blood.
Choice B reason:
A BUN level of 45 mg/dL and a creatinine level of 8 mg/dL are significantly higher than the normal range, which is consistent with impaired kidney function seen in CKD. These elevated levels indicate that the kidneys are not effectively filtering urea and creatinine from the blood, leading to their accumulation.
Choice C reason:
A BUN level of 23 mg/dL and a creatinine level of 1.0 mg/dL could be seen in the early stages of CKD. While the creatinine level is within the normal range, the BUN level is slightly elevated, which may suggest a decline in kidney function.
Choice D reason:
A BUN level of 10 mg/dL and a creatinine level of 0.3 mg/dL are both below the normal range. This is an unlikely finding for a patient with CKD, as kidney impairment typically leads to increased levels of these substances in the blood.
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Correct Answer is A
Explanation
Choice A reason:
Arthralgia, or joint pain, is a common symptom associated with heterotopic ossification (HO), especially when it occurs near joints. The ectopic bone formation can lead to restricted movement and pain during joint movement.
Choice B reason:
Bradycardia, or a slower than normal heart rate, is not directly associated with HO. While spinal cord injuries can affect autonomic control and potentially lead to bradycardia, it is not a symptom specifically linked to the presence of HO.
Choice C reason:
Fecal impaction may occur in patients with spinal cord injuries due to mobility issues and changes in bowel function, but it is not a direct result of HO. HO does not typically affect bowel movements unless the ossification is in a location that mechanically obstructs the bowel.
Choice D reason:
Hypertension, or high blood pressure, is not a symptom commonly associated with HO. While individuals with spinal cord injuries may experience dysregulation of blood pressure, this is not specifically related to HO.
Correct Answer is B
Explanation
Choice A reason:
Malignant melanoma typically presents as a mole that changes in color, size, or feel and has irregular edges. It may also itch, ooze, or bleed. A raised, flesh-colored lesion with pearly white borders is not characteristic of malignant melanoma.
Choice B reason:
Basal cell carcinoma often appears as a raised, pearly bump, sometimes with visible blood vessels, which may have a central depression. The description of the lesion as raised, flesh-colored with pearly white borders aligns with the common presentation of basal cell carcinoma.
Choice C reason:
Squamous cell carcinoma usually presents as a firm, red nodule, or a flat lesion with a scaly, crusted surface. The lesion described does not match the typical appearance of squamous cell carcinoma.
Choice D reason:
Actinic keratosis is characterized by rough, scaly patches on sun-exposed areas of the skin, which may be precancerous. They are not typically described as raised, flesh-colored lesions with pearly borders.