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. 2024 Sep;27(5):932-946.
doi: 10.1007/s10120-024-01534-1. Epub 2024 Jul 11.

A systematic review on the effectiveness of robot-assisted minimally invasive gastrectomy

Affiliations

A systematic review on the effectiveness of robot-assisted minimally invasive gastrectomy

L Triemstra et al. Gastric Cancer. 2024 Sep.

Abstract

Background: Robot-assisted minimally invasive gastrectomy (RAMIG) is increasingly used as a surgical approach for gastric cancer. This study assessed the effectiveness of RAMIG and studied which stages of the IDEAL-framework (1 = Idea, 2A = Development, 2B = Exploration, 3 = Assessment, 4 = Long-term follow-up) were followed.

Methods: The Cochrane Library, Embase, Pubmed, and Web of Science were searched for studies on RAMIG up to January 2023. Data collection included the IDEAL-stage, demographics, number of participants, and study design. For randomized controlled trials (RCTs) and long-term studies, data on intra-, postoperative, and oncologic outcomes, survival, and costs of RAMIG were collected and summarized.

Results: Of the 114 included studies, none reported the IDEAL-stage. After full-text reading, 18 (16%) studies were considered IDEAL-2A, 75 (66%) IDEAL-2B, 4 (4%) IDEAL-3, and 17 (15%) IDEAL-4. The IDEAL-stages were followed sequentially (2A-4), with IDEAL-2A studies still ongoing. IDEAL-3 RCTs showed lower overall complications (8.5-9.2% RAMIG versus 17.6-19.3% laparoscopic total/subtotal gastrectomy), equal 30-day mortality (0%), and equal length of hospital stay for RAMIG (mean 5.7-8.5 days RAMIG versus 6.4-8.2 days open/laparoscopic total/subtotal gastrectomy). Lymph node yield was similar across techniques, but RAMIG incurred significantly higher costs than laparoscopic total/subtotal gastrectomy ($13,423-15,262 versus $10,165-10,945). IDEAL-4 studies showed similar or improved overall/disease-free survival for RAMIG.

Conclusion: During worldwide RAMIG implementation, the IDEAL-framework was followed in sequential order. IDEAL-3 and 4 long-term studies showed that RAMIG is similar or even better to conventional surgery in terms of hospital stay, lymph node yield, and overall/disease-free survival. In addition, RAMIG showed reduced postoperative complication rates, despite higher costs.

Keywords: Gastric Cancer; IDEAL-framework; Implementation; RAMIG; Robot-assisted gastrectomy.

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Conflict of interest statement

Jelle P. Ruurda: Consulting or Advisory Role: Intuitive Surgical, Medtronic. Richard van Hillegersberg: Consulting or Advisory Role: Intuitive Surgical, Medtronic. All other authors declare that they have no conflicts of interest.

Figures

Fig. 1
Fig. 1
PRISMA Flowchart
Fig. 2
Fig. 2
Distribution of published RAMIG studies according to IDEAL-2A, 2B, 3 and 4 stages. Upper = World, lower = Europe
Fig. 3
Fig. 3
Course of IDEAL-stages 2A, 2B, 3, and 4 of included studies over time Worldwide (upper graph) and in Europe (lower graph)
Fig. 4
Fig. 4
Summary of the risk of bias for randomized controlled/clinical studies [–24]
Fig. 5
Fig. 5
Summary of the risk of bias for non-randomized clinical trials [–44]

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