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Comparative Effectiveness of Minimally Invasive Surgery and Conventional Approaches for Major or Challenging
Lucas W Thornblade1, Xu Shi, Alex Ruiz
1Department of Surgery, University of Washington, Seattle, WA Department of Biostatistics, University of Washington, Seattle, WA.
Background:
The benefits of minimally invasive surgery (MIS) for low-risk or minor liver resection are well established. There is growing interest in MIS for major hepatectomy (MH) and other challenging resections, but there remain unanswered questions of safety that prevent broad adoption of this technique.
Study Design:
We conducted a retrospective cohort study of patients undergoing hepatectomy at 65 hospitals participating in the NSQIP Hepatopancreatobiliary Collaborative in 2014. We assessed serious morbidity or mortality (SMM; including organ/space infection and organ failure). Secondary outcomes included transfusion, bile leak, liver failure, reoperation or intervention, and 30-day readmission. We also measured factors considered to make resection more challenging (ie large tumors, cirrhosis, ≥3 concurrent resections, previous neoadjuvant chemotherapy, and morbid obesity).
Results:
There were 2,819 patients who underwent hepatectomy (aged 58 ± 14 years; 53% female; 25% had MIS). After adjusting for clinical and operative factors, the odds of SMM (odds ratio [OR] = 0.57; 95% CI 0.34 to 0.96; p = 0.03) and reoperation or intervention (OR = 0.52; 95% CI 0.29 to 0.93; p = 0.03) were significantly lower for patients undergoing MIS compared with open. In the MH group (n = 1,015 [13% MIS]), there was no difference in the odds of SMM after MIS (OR = 0.37; 95% CI 0.13 to 1.11; p = 0.08); however, minimally invasive MH met criteria for noninferiority. There were no differences in liver-specific complications or readmission between the groups. Odds of SMM were significantly lower after MIS among patients who had received neoadjuvant chemotherapy (OR = 0.33; 95% CI 0.15 to 0.70; p = 0.004).
Conclusions:
In this large study of minimally invasive MH, we found safety outcomes that are equivalent or superior to conventional open surgery. Although the decision to offer MIS might be influenced by factors not included in this evaluation (eg surgeon experience and other patient factors), these findings support its current use in MH.
Insights
Minimally invasive surgery (MIS) for major hepatectomy (MH) shows equivalent or superior safety outcomes compared to open surgery. These findings support the use of MIS in MH procedures, even in complex cases.
Area of Science:
- Hepatobiliary surgery
- Minimally Invasive Surgery (MIS)
- Surgical Oncology
Background:
- Established benefits of MIS for minor liver resections.
- Growing interest but safety concerns hinder MIS adoption for major hepatectomy (MH).
- Need for evidence on MIS safety in challenging liver resections.
Purpose of the Study:
- To evaluate the safety and efficacy of MIS compared to open surgery for major hepatectomy (MH).
- To assess outcomes in challenging MH cases, including those with specific risk factors.
Main Methods:
- Retrospective cohort study of 2,819 patients undergoing hepatectomy across 65 hospitals (2014).
- Assessed serious morbidity or mortality (SMM), including infection and organ failure.
- Analyzed outcomes based on surgical approach (MIS vs. open) and challenging resection factors.
Main Results:
- MIS was associated with significantly lower odds of SMM (OR=0.57) and reoperation (OR=0.52) compared to open surgery.
- In the MH subgroup (n=1,015), MIS met noninferiority criteria for SMM (OR=0.37, p=0.08).
- MIS showed significantly lower SMM odds in patients receiving neoadjuvant chemotherapy (OR=0.33).
Conclusions:
- Minimally invasive major hepatectomy demonstrates safety outcomes equivalent or superior to open surgery.
- Findings support the current use of MIS for major hepatectomy.
- Further evaluation of surgeon experience and patient factors may refine MIS applicability.
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