Mortality predictors in hospitalized elderly patients.

Area of Science:

• Geriatric Medicine
• Clinical Biochemistry
• Epidemiology

Background:

• In-hospital mortality risk assessment in elderly patients is crucial.
• Existing tools like the Charlson Comorbidity Index (CCI) may not fully capture mortality risk in all elderly populations.
• Novel biomarkers are needed for improved risk stratification.

Purpose of the Study:

• To compare the predictive accuracy of vitamin B12 levels and the Charlson Comorbidity Index (CCI) for in-hospital mortality in elderly patients.
• To identify reliable and accessible predictors of mortality in critically ill geriatric patients.

Main Methods:

• Retrospective analysis of electronic hospital records.
• Inclusion of 1509 elderly patients (≥65 years).
• Statistical association analysis between biomarkers (albumin, vitamin B12), CCI, and in-hospital mortality.

Main Results:

• Elevated vitamin B12 levels, albumin, and age were significantly associated with increased in-hospital mortality.
• The CCI was not significantly associated with death.
• Vitamin B12 demonstrated approximately three times greater predictive capability for mortality compared to the CCI.

Conclusions:

• Vitamin B12 levels, alongside albumin, serve as a practical and reliable tool for identifying high-risk elderly hospitalized patients.
• Routine measurement of vitamin B12 and albumin is recommended in geriatric practice.
• Combining simple, inexpensive tests may offer superior mortality prediction compared to complex indices like the CCI.