Laboratory Tests

• The WBC may or may not be elevated. In elderly patients, a drop in WBCs also can be a sign of infection. The differential should show a predominance of neutrophils if a bacterial infection is present. The presence of bands also could be an indicator of bacterial infection. Elevated lymphocytes are an indication of viral infection

• Blood urea nitrogen (BUN) and serum creatinine are needed to dose antibiotics appropriately and to minimize or prevent drug toxicity (especially in the elderly patient)

Your Heart and Nutrition

Your Heart and Nutrition

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