Sputum bacteriology in nursing home pneumonia: a retrospective study
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Published on: July 16, 2020
C Gauerke1, P Drinka, J T Faulks
1Wisconsin Veterans Home, King 54946-0620, USA.
Introduction:
Pneumonia is the most lethal infection in nursing homes. The Infectious Disease Society of America recommends that attempts be made to obtain quality sputum to focus antibiotic therapy. This is especially important within the enclosed space of a nursing home, where constant pressure from broad spectrum, empiric antibiotics sets the stage for the emergence of resistant organisms.
Methods:
We reviewed all cases of radiographic pneumonia diagnosed on-site at the Wisconsin Veterans Home, a 721-bed facility, for the recording of sputum bacteriology and 30-day mortality.
Results:
Ninety-nine cases of radiographic pneumonia diagnosed on-site were identified over 1 year. Mortality was 10% within 30 days. Fourteen quality sputum specimens were obtained and processed microbiologically. None of the individuals who had a sputum specimen died within 30 days, probably because the ability to obtain a sputum specimen is a marker of higher functional status.
Discussion:
Even if empiric therapy continues in the majority of cases, cultures in individual cases may alert clinicians to noncovered, resistant pathogens, and allow focused antibiotic therapy with agents like amoxicillin that might extend the usefulness of empiric, broad spectrum antibiotics. Institutions may also sum the results of sputum bacteriology to assist in the choice of empiric antibiotic therapy. Sputum bacteriology may benefit both the individual resident and the entire population of the institution.
Insights
Pneumonia in nursing homes is deadly. Obtaining sputum cultures, even in a few cases, can help guide antibiotic treatment and potentially improve patient outcomes, reducing mortality.
Area of Science:
- Infectious Diseases
- Geriatric Medicine
- Clinical Microbiology
Background:
- Pneumonia is a leading cause of death in nursing home residents.
- Effective antibiotic therapy is crucial to combat resistant organisms in these settings.
- Sputum culture is recommended for targeted antibiotic treatment.
Purpose of the Study:
- To evaluate the impact of sputum bacteriology on 30-day mortality in nursing home residents with pneumonia.
- To assess the feasibility and utility of obtaining quality sputum specimens in a long-term care facility.
Main Methods:
- A retrospective review of radiographic pneumonia cases diagnosed on-site at a 721-bed facility.
- Analysis of sputum bacteriology and 30-day mortality data for 99 identified cases.
Main Results:
- Overall 30-day mortality for pneumonia was 10%.
- Fourteen quality sputum specimens were obtained and processed.
- No deaths occurred within 30 days among patients with a sputum specimen, potentially indicating higher functional status.
Conclusions:
- Sputum cultures can identify resistant pathogens, enabling focused antibiotic therapy and preserving broad-spectrum antibiotics.
- Aggregated sputum bacteriology data can inform institutional empiric antibiotic choices.
- Sputum analysis offers benefits for individual patients and the overall facility population.
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