Final answer:
The nurse should report elevated blood urea nitrogen (BUN), low creatinine levels, and increased calcium levels to the healthcare provider.
Step-by-step explanation:
When performing a comprehensive nutritional assessment, a nurse reviews a patient's lab results to identify any abnormalities that may need to be addressed. In this case, the nurse should report the finding of elevated blood urea nitrogen (BUN) to the healthcare provider. BUN is an indicator of kidney function, and elevated levels can suggest renal impairment or dysfunction.
The nurse should also report any other abnormal findings that may be clinically significant, such as low creatinine levels or increased calcium levels. Low creatinine levels can be indicative of muscle wasting or decreased kidney function, while increased calcium levels may signal hypercalcemia, which can have various causes and implications on health. The nurse needs to communicate these findings to the healthcare provider for further evaluation and management.