Which finding indicates Holly might be experiencing a serious bacterial infection?

An elevated white blood cell count (WBC) with a left shift is a significant finding that indicates Holly may be experiencing a serious bacterial infection. A left shift refers to an increase in the number of immature neutrophils (band forms) in the blood, which occurs in response to a bacterial infection. This increase happens because the body is mobilizing its immune response to fight off the infection, leading to the release of not just mature neutrophils but also their precursors from the bone marrow into the bloodstream.

In clinical practice, this is viewed as a hallmark sign of acute bacterial infections. It reflects an active response by the immune system to combat the invading pathogens. Recognizing this finding can prompt healthcare providers to initiate timely treatment, such as antibiotics, especially if other clinical signs are present that suggest an infection.

In contrast, low fever, a normal appetite, and clear skin with no rash are less indicative of a serious bacterial infection. A low fever might suggest a mild infection or other non-bacterial causes, while a normal appetite and clear skin typically do not signal significant infection or illness. Therefore, the elevated WBC with a left shift stands out as the most critical indicator in assessing the likelihood of a serious bacterial infection in Holly.