The impact of interval cholecystectomy timing after percutaneous transhepatic cholecystostomy on post-operative adverse outcomes

Abstract

Objective: This study aims to explore how timing of interval of cholecystectomy (IC) after percutaneous transhepatic cholecystostomy tube (PTC) placement impacts post-operative outcomes.

Methods: A retrospective database analysis of New York State SPARCs database of IC between 2005 and 2015. The timing for IC ranged between > 1 week and < 2 years. Patients undergoing this procedure were further divided into quartiles using 4-time intervals; 1-5 weeks (Q1), 5-8 weeks (Q2), 8-12 weeks(Q3), and > 12 weeks(Q4). The study's primary outcome was hospital length of stay (LOS). Secondary outcomes included discharge status, 30-day readmission, 30-day ED visit, and 90-day reoperation, surgery type, complication, and bile duct injury. Multivariable regression models were used to compare patients across the four-time intervals after adjusting for confounding factors.

Results: A total of 1038 patients with a history of PTC followed by IC between > 1 week and < 2 years were included in the final analysis. The median time to IC was 7.7 weeks. Q2 and Q3 both had a significantly higher median LOS of 3 days versus Q1 and Q4 at median of 5 days (p < 0.0001). Patients from racial and ethnic minorities (e.g., African Americans and Hispanics) were more likely to get their IC after 12 weeks (p < 0.05). Further, Black patients had a significantly higher median LOS than White, non-Hispanic patients (8 days vs 4 days, p < 0.0001) and were more likely to have open procedure. Multivariable regression analysis identified shorter LOS during Q2 (Ratio, 0.76, 95%, 0.67-0.87, p < 0.0001), and Q3 (Ratio 0.75, 95% CI, 065-0.86, p < 0.0001) compared to those who got their IC in Q4. Similar findings exist when comparing Q2 and Q3 to those receiving treatment during Q1.

Conclusion: A time interval of 5-12 weeks between PTC and IC was associated with a decreased LOS. This study also suggests the persistence of racial disparities among these patients.

Keywords: Interval cholecystectomy; Length of stay; Percutaneous transhepatic cholecystostomy; Resource utilization; Timing.