Fluid resuscitation is a critical component of sepsis treatment. Research has shown that intravenous (IV) fluid therapy in sepsis positively impacts cardiac output and thereby oxygen (O2) delivery through a complex interaction of central venous pressure, right atrial pressure, venous resistance, ventricular compliance, cardiac contractility, and systemic vascular resistance. The 2021 sepsis prevention guidelines recommend balanced crystalloids as first-line therapy. However, no studies in the literature have evaluated the effect of albumin on O2 delivery. In our study, the investigators aim to assess the impact of albumin replacement on O2 delivery in sepsis patients in the intensive care unit.