Which of the following conditions might require a nurse to reassess a patient’s eligibility for surgery?

The presence of fever is a significant indicator that may necessitate a reassessment of a patient's eligibility for surgery. Fever can be a sign of an underlying infection or inflammatory process, which could increase the risk of complications during and after surgery. Surgical procedures generally require patients to be in optimal health to minimize risks, and a fever could suggest that the patient is not physiologically ready for anesthesia and surgical intervention.

In contrast, controlled hypertension, stable blood sugar levels, and normal electrolyte levels typically indicate that the patient's chronic conditions are managed effectively, making them more suitable for surgery. However, if a patient presents with a fever, it is critical to investigate the cause before proceeding, as this may delay the surgical intervention or require further medical treatment to address the underlying issue.