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Cholesterol and serum albumin as risk factors for death in patients undergoing general surgery
S Palma1, A Cosano, M Mariscal
1Division of Preventive Medicine and Public Health, University of Jaen, Jaen, Spain.
Insights
Low serum albumin, total cholesterol, and high-density lipoprotein-cholesterol (HDL-C) predict long-term mortality risk in general surgery patients post-discharge. Monitoring these biomarkers can inform risk assessment for improved patient outcomes.
Area of Science:
- Biochemistry
- Clinical Medicine
- Surgical Outcomes
Background:
- Serum levels of total cholesterol, HDL-C, and albumin are linked to in-hospital outcomes.
- The long-term prognostic value of these biomarkers after general surgery remains understudied.
Purpose of the Study:
- To investigate the association between serum levels of total cholesterol, HDL-C, and albumin and long-term all-cause mortality after general surgery.
Main Methods:
- Prospective cohort study of 2848 general surgery patients.
- Biochemical measurements taken at admission, with a median follow-up of 6 years.
- Multivariable Cox regression analysis used to assess all-cause mortality.
Main Results:
- Serum albumin, total cholesterol, and HDL-C showed a significant inverse relationship with all-cause mortality.
- Low albumin, total cholesterol, and HDL-C were associated with increased mortality risk.
- Total cholesterol demonstrated the strongest association with mortality beyond 2 years post-discharge.
Conclusions:
- Low serum albumin, total cholesterol, and HDL-C levels are significant predictors of long-term mortality in patients after general surgery.
- These findings highlight the importance of monitoring these biomarkers for long-term risk stratification.
Background:
Serum levels of total cholesterol, its fractions (high-density lipoprotein-cholesterol (HDL-C) and low-density lipoprotein-cholesterol) and albumin are related to a poor outcome during hospital stay. It has been not assessed whether they are related to death in the long term after general surgery.
Methods:
This prospective cohort study included 2848 general surgical patients with a median follow-up of 6 years after discharge from hospital. Sampling for biochemical measurements was done at the time of admission. The outcome investigated was all-cause mortality and multivariable Cox regression was used for statistical analysis.
Results:
Three hundred and seventy-eight patients (13.3 per cent) died during follow-up. Serum albumin (adjusted hazard ratio (HR) 2.2 (95 per cent confidence interval (c.i.) 1.5 to 3.4) for lowest versus highest quintile), total cholesterol (HR 1.6 (95 per cent c.i. 1.1 to 2.3) for lowest versus highest quintile) and HDL-C (HR 1.6 (95 per cent c.i. 1.1 to 2.4) for lowest versus highest quintile) showed a significant inverse relationship with all-cause mortality in both crude and multivariable analyses. Serum albumin and HDL-C were associated with death for up to 2 years after surgery, whereas total cholesterol had the strongest association more than 2 years after discharge.
Conclusion:
Low levels of serum albumin, total cholesterol and HDL-C are associated with death after discharge from hospital in patients having general surgery.
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