Initial treatment of a patient with cancer experiencing early sepsis includes the administration of IV:

In the context of early sepsis in a cancer patient, the administration of intravenous antibiotics is critical as part of the initial treatment. Early intervention is essential in managing sepsis effectively, especially given the compromised immune systems often seen in cancer patients who may be undergoing treatments such as chemotherapy.

Antibiotics help to identify and eliminate the pathogens causing the infection, which is a primary factor in sepsis. The timely administration of broad-spectrum antibiotics can significantly reduce mortality rates and is a standard protocol in sepsis management to combat the systemic inflammatory response that can arise from an infection.

While other options like vasopressors, antifungals, and immunoglobulins may play roles in the management of sepsis or specific cases, they do not address the underlying cause of sepsis in the same immediate way that antibiotics do. Vasopressors are often used later in the management of septic shock to maintain blood pressure, antifungals would be indicated only if a fungal infection were suspected or confirmed, and immunoglobulins are more specific to certain conditions and not a first-line treatment for the initial sepsis of unknown etiology. Thus, the correct initial approach in this scenario is to administer antibiotics.