When do readmissions for infection occur after spine and total joint procedures?

Area of Science:

• Orthopedic Surgery
• Infectious Disease
• Health Economics

Background:

• Hospitals face financial responsibility for all patient care within 30 days post-discharge under the episode-of-care model.
• Surgical site infections (SSIs) are a primary cause of readmission following total joint arthroplasty (TJA) and spine surgery.
• The timing of SSI-related readmissions relative to the 30-day episode-of-care window is not well understood.

Purpose of the Study:

• To determine if most SSIs leading to readmission occur within 30 days of discharge.
• To investigate if the type of surgical procedure (TJA vs. spine) influences readmission timing.
• To assess whether the infecting organism affects the timing of SSI-related readmissions.

Main Methods:

• A retrospective review of 91 patients readmitted with SSIs after elective TJA or spine surgery (2007-2010).
• Analysis of readmission timing (within vs. beyond 30 days) for spine surgery (n=46) and TJA (n=45) cohorts.
• Identification of infecting organisms and correlation with readmission timing.

Main Results:

• Eighty percent of spine surgery readmissions and 58.3% of TJA readmissions occurred within 30 days.
• A trend suggested more THA (total hip arthroplasty) readmissions occurred within 30 days compared to other TJAs.
• No significant correlation was found between the type of infecting organism and the timing of readmission.

Conclusions:

• The majority of SSI-related readmissions following TJA and spine surgery fall within the 30-day episode-of-care period.
• Hospitals incur significant costs due to SSIs under the current bundled reimbursement model.
• Understanding readmission timing is crucial for managing costs associated with surgical site infections.