Five-Day Antibiotic Withdrawal in Suitable Inpatients with Community-Acquired Pneumonia

From the 2024 HVPA National Conference

Aaron Gandhi DO (Garden City Hospital), Raagini Yedidi MD, Apoorv Tiwari MD, MRCPUK, Hiba Asadulla, Undergraduate, Sujata Kambhatla MD, Amin Pasha MD

Background:
Withdrawing antibiotic treatment at the five-day mark in suitable inpatients with community-acquired pneumonia is recommended by the American Thoracic Society and the Infectious Disease Society of America.

Objective:
The goal of our intervention was to increase resident confidence and knowledge regarding algorithmic management of community-acquired pneumonia. Our longer-term goal is for our hospital to meet the state benchmark regarding adherence to optimal duration of therapy.

Methods:
A pre-intervention survey was conducted to assess Internal Medicine resident pre-intervention confidence and knowledge regarding management of community-acquired pneumonia (CAP). A laminated flowsheet of preferred antibiotic regimens for uncomplicated CAP was distributed in the Graduate Medical Education resident workspace. A one-hour lecture regarding management of community-acquired pneumonia was held for all Internal Medicine residents. Residents completed a post-intervention survey to determine whether confidence of uncomplicated CAP management had increased and whether resident knowledge of preferred regimen selection and duration of therapy had improved.

Results:
Twenty-four Internal Medicine residents were included for the intervention. Completion rate was 58.3% (14 residents) for the pre-intervention survey and 87.5% (21 residents) for the post-intervention survey. Residents rated their comfort level treating uncomplicated CAP from 1 to 5, 1 being uncomfortable and 5 being very comfortable. The average pre-intervention comfort level was 3.79, and the average post-intervention comfort level was 4.52 (p=0.0306). Before the intervention, 8 responses of 23 total (34.5%) were incorrectly selected pertaining to 7-day regimens and afterwards 5 of 37 total responses (13.5%) were incorrectly selected pertaining to 7-day regimens. Before the intervention, 84.62% (11) of respondents correctly identified ceftriaxone plus azithromycin/clarithromycin/doxycycline for 5 days and 23.08% (3) correctly identified ampicillin + sulbactam plus azithromycin/clarithromycin/doxycycline for 5 days of treatment as preferred regimens for uncomplicated CAP. Afterwards, 90.48% of respondents (19) correctly identified the first regimen and 47.62% of respondents (10) correctly identified the second.

Conclusions
Overall, the intervention appeared successful in increasing resident confidence in treating uncomplicated CAP. The intervention also decreased the incorrect response rate of 7-day regimens for the treatment of uncomplicated CAP, representing increased resident awareness of antibiotic withdrawal at the 5-day mark for uncomplicated CAP. The percentage of residents who successfully identified preferred regimens for uncomplicated CAP increased, but resident awareness of the ampicillin + sulbactam-based regimen was poorer, indicating a future area for growth. One strength of the intervention was that despite scheduling limitations precluding all residents from being able to attend the in-person lecture, circulation of the laminated flowsheets may have helped reach the majority of residents. Significance of the intervention may be under-represented due to selection bias as those who were uncomfortable with treatment of uncomplicated CAP may not have answered the pre-intervention survey, reflected by greater response rates to post-intervention survey. Additional future directions are to evaluate whether increased resident awareness actually improves hospital metrics tracking percentage of patients with uncomplicated CAP treated with 5 days of antibiotics. The longer term goal of meeting Michigan’s Hospital Medicines Safety benchmark will be assessed at the end of Q1 of 2024, and again on a quarterly basis.

Clinical Implications
This initiative will contribute to improved antibiotic stewardship and decreased cost for patients.