Predicting 28‑Day Mortality in Critically Ill Patients: A Combined Model Using APACHE II, Lactate Clearance, and Pcv-aCO2.
BACKGROUND Early identification of prognostic factors in critically ill patients is essential for optimizing ICU management. Although the APACHE II score, lactate clearance rate (LCR), and central venous-to-arterial carbon dioxide partial pressure difference (Pcv-aCO2) are each associated with outcomes, their combined...