Methods: Retrospective chart review was performed for patients discharged from Abbott Northwestern Hospital (ANW) with primary diagnosis of skin and soft tissue infection between October 1st, 2015 and September 30th, 2016. Inclusion and exclusion criteria were approved by ANW Antimicrobial Stewardship Committee and used to retrospectively identify potential candidates for oritavancin or dalbavancin. Retrospective cost-analysis was performed to assess potential cost savings with use of dalbavancin or oritavancin instead of the traditional antibiotic therapy that was used. Financial impact was assessed taking into consideration potential cost savings and additional expenses with the use of dalbavancin or oritavancin. Data are presented as mean±standard deviation. Statistical comparison between actual and predicted length of hospital stay was performed using paired t test. P<0.05 was considered statistically significant.
Results: A total of 294 admissions were identified. Eight patients met the selection criteria with the majority being intravenous drug users. Actual length of stay of candidates for dalbavancin or oritavancin was 4.3±2.8 days. Predicted length of hospital stay if dalbavancin or oritavancin were used was 3.0±1.9 days (P=0.03 vs. actual length of stay). Use of dalbavancin or oritavancin may have prevented four readmissions, two peripherally inserted central catheter insertions, and use of daptomycin in one patient. Despite the potential cost savings, use of dalbavancin or oritavancin would result in an additional cost to ANW by an estimate of $937 to $20,107 a year.
Conclusion: Dalbavancin or oritavancin may have been used in a small proportion of admissions (3%) with skin and soft tissue infection as primary diagnosis. The high cost of dalbavancin and oritavancin offset any potential cost savings resulting in additional costs to ANW estimated to be up to $20,000 a year.
J. Holt, None