OGC SO34 - Textbook Outcome in Gastric Cancer Elective Surgery: A multicentre analysis

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Abstract Background Textbook outcome (TO) is a composite measure of surgical outcomes that, when collectively achieved, depict the optimal result for the patient. Multidimensional parameters, like TO offer a in depth picture of hospital performance, by combining multiple indicators. While an increasing number of studies are evaluating TO in cancer, its application for gastric cancer is still a recent advance. Since surgical reality differs worldwide, a common language is essential when setting outcome goals. This study aims to assess TO accomplishment in several hospital typologies that offer curative-intent resections for gastric cancer. Method A prospective observational multi-institutional audit and 90 day follow-up included data from 138 institutions, in 47 countries. This is a preliminary analysis with focus on TO. Adult patients who underwent elective gastric cancer resection with curative intent, between April 1st and September 30th, 2022, were included. Textbook Outcome (TO) was achieved when all the following seven criteria were met: complete resection (R0), more than 15 lymph nodes sampled, discharge before 21 days, no mortality, no severe morbidity (Clavien–Dindo over 2), no reintervention and no readmission within 90 days post-operative. Results A total of 380 collaborators submitted data on 1538 patients. The mean age was 64.2 years and 58.5% were males. A total of 734 (48%) from the included 1538 patients, achieved TO. “No reintervention in 90 days” was registered in 92% of patients. “No morbidity in 90 days” was observed in 71%. “More than 15 lymph nodes sampled" was achieved in only 79%. The 90-day morbidity and mortality rates were 38.2% (n=587) and 2.9% (n=45), respectively. Conclusion This study demonstrates that achieving Textbook Outcome in gastric cancer resection is seldom attainable. A significant variability across the different outcome parameters within the participating centres was expected. The high rates of mortality-free and reintervention-free outcomes express an effective postoperative care. The lower rates of adequate lymph node sampling and morbidity-free outcomes indicate areas for improvement. Further research should focus on standardizing protocols and improving specific surgical practices to enhance overall TO rates in gastric cancer patients, among the hospital typologies and geographic locations, included in this study.