Insights into Critical Connections: Exploring Lipid Dynamics of ICU Patients In Tertiary Healthcare Settings

Background: The critical illness involves dramatic changes in metabolic and inflammatory processes that have a long-lasting effect on lipid metabolism. The objective was to investigate the lipid dynamics among Intensive Care Unit (ICU) patients and establish relationship between repeated changes in lipid levels and clinical outcomes in patients with critical illness. Methods: This prospective observational study, (June to November of 2024) was conducted at Department of Chemical Pathology, Combined Military Hospital Malir, Karachi, Pakistan. A total of 112 critically ill patients who were admitted to the ICU were enrolled. On day 1, day 3 and day 5 of ICU admission, Serum Total Cholesterol (TC), High-density lipoprotein Cholesterol (HDL-C), Low-density lipoprotein Cholesterol (LDL-C), C- Reactive protein (CRP) were measured. They were organized into two groups: Group A (increasing lipid trend) and Group B (decreasing lipid trend). Temporal changes and relationships with CRP levels and clinical outcomes were compared in SPSS version 27. Results: Serum total cholesterol (p < 0.001), HDL-C (p = 0.002), and LDL-C (p < 0.001) showed a significant decrease between day 1 and day 5, but CRP showed a significant increase (p < 0.001). Group B patients (patients with a decreasing cholesterol trend) had a longer stay in the ICU (8.4 ± 3.2 days) and higher mortality rates (38.6) than Group A (5.9 ± 2.7 days, 14.3%). The reduction in LDL-C and HDL-C was greater in non-survivors than in survivors (p < 0.05). Conclusion: Serial lipid measurements can be considered effective predictors of mortality and disease progression in patients with severe illness.