Risk factors for 30-day mortality in elderly patients with lower respiratory tract infection. Community-based study

Area of Science:

• Geriatric Medicine
• Infectious Diseases
• Epidemiology

Background:

• Pneumonia is a leading cause of mortality in the elderly population.
• Limited research exists on mortality risk factors encompassing both community-dwelling and institutionalized older adults.
• Lower respiratory tract infections (LRTIs) pose a significant health threat to seniors.

Purpose of the Study:

• To identify factors associated with 30-day mortality in elderly individuals diagnosed with LRTIs.
• To conduct a population-based study to assess mortality risk in older adults.

Main Methods:

• Retrospective cohort study of adults aged 65 years and older in Rochester, Minn.
• Analysis of medical records to identify risk factors for 30-day mortality following pneumonia or bronchitis.
• Logistic regression modeling to determine independent risk factors.

Main Results:

• A total of 413 older adults were included in the study.
• Independent predictors of 30-day mortality included: neurologic illness (OR, 3.92), current cancer diagnosis (OR, 6.2), and atypical symptoms (OR, 4.98).
• Recent or current antibiotic use was also associated with increased 30-day mortality (OR, 3.13).

Conclusions:

• Malignancy and neurologic disease are significant indicators of high 30-day mortality risk in older adults with LRTIs.
• Atypical presentations, such as confusion or lethargy, and recent antibiotic use, are also associated with increased mortality risk.
• These findings aid in identifying high-risk patients for targeted interventions.