This document discusses sepsis case studies and the importance of timely diagnosis and treatment of sepsis. It defines sepsis and its criteria according to SIRS (Systemic Inflammatory Response Syndrome). Early diagnosis is important as each hour of delayed treatment can increase mortality rates by 5-10%. While microbiological cultures are traditionally used for definitive diagnosis, they can take 48-72 hours for results. Biomarkers like PCT and CRP can provide faster results and guide early empiric therapy.