Final answer:
A)sedimentation rate. An elevated sedimentation rate is an unexpected finding for osteomyelitis and should be reported to the provider.
Step-by-step explanation:
The nurse should recognize that an unexpected finding for osteomyelitis would be an elevated sedimentation rate. The sedimentation rate, also known as erythrocyte sedimentation rate (ESR), measures the rate at which red blood cells settle in a tube of blood. In cases of osteomyelitis, the inflammation in the bone can cause an increase in the sedimentation rate.
To confirm a diagnosis of osteomyelitis, the nurse would typically use a combination of radiography, imaging, and identification of bacteria from blood cultures or bone cultures. The elevated sedimentation rate would support the suspicion of osteomyelitis and should be reported to the provider for further evaluation and treatment.