Green Cystoscopy: Does Minimizing the Use of Drapes Increase Infection Rates?

Importance: The U.S. health care system has an enormous carbon footprint made worse by the escalating use of single-use supplies. Emerging evidence suggests that smaller surgical fields ("green" draping) may represent a safe alternative to traditional draping.

Objectives: The aim of the study was to determine if the proportion of cases treated for culture-proven urinary tract infection (UTI) within 2 weeks of operating room cystoscopy after the green draping protocol implementation is noninferior to preprotocol cases. Secondary objectives included risk factors for UTI and waste and cost savings.

Study design: A pre-post implementation noninferiority study was performed from 2021 to 2023 in a urogynecology division at an academic medical center. The green draping protocol eliminated the use of top drapes, leg drapes, and gowns; blue towels were permitted per the surgeon's discretion. All minor cystoscopy cases were included.

Results: The cohort included 240 patients. Treatment of culture-proven UTI in the green cohort was noninferior to the preprotocol group (9 [7.5%] vs 7 [5.8%], P < 0.05). The odds of a culture-proven UTI were higher with history of recurrent UTI (odds ratio = 7.02), interstitial cystitis/bladder pain syndrome (odds ratio = 4.33), and older age (odds ratio per 5-year increase = 1.21). Approximately $1,403.92 (2023 USD) was saved, and 165 pounds of waste was diverted from the landfill.

Conclusions: A green draping protocol is noninferior to standard draping with respect to rates of postoperative culture-positive UTIs. Clinicians may use a smaller operating room field to decrease the carbon footprint without compromising quality of care.