Enhanced recovery after surgery (ERAS®) society guidelines for gynecologic oncology: Addressing implementation challenges - 2023 update.

BACKGROUND: Despite evidence supporting its use, many Enhanced Recovery After Surgery (ERAS) recommendations remain poorly adhered to and barriers to ERAS implementation persist. In this second updated ERAS® Society guideline, a consensus for optimal perioperative care in gynecologic oncology surgery is presented, with a specific emphasis on implementation challenges. METHODS: Based on the gaps identified by clinician stakeholder groups, nine implementation challenge topics were prioritized for review. A database search of publications using Embase and PubMed was performed (2018-2023). Studies on each topic were selected with emphasis on meta-analyses, randomized controlled trials, and large prospective cohort studies. These studies were then reviewed and graded by an international panel according to the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system. RESULTS: All recommendations on ERAS implementation challenge topics are based on best available evidence. The level of evidence for each item is presented accordingly. CONCLUSIONS: The updated evidence base and recommendations for stakeholder derived ERAS implementation challenges in gynecologic oncology are presented by the ERAS® Society in this consensus review.

Outcomes of enhanced recovery after surgery (ERAS) in gynecologic oncology - A systematic review and meta-analysis.

OBJECTIVE: To assess the benefit of Enhanced Recovery After Surgery (ERAS) on length of stay (LOS), postoperative complications, 30-day readmission, and cost in gynecologic oncology. METHODS: A systematic literature search was performed in MEDLINE, EMBASE, Cochrane Register of Controlled Trials, and Web of Science for all peer-reviewed cohort studies and controlled trials on ERAS involving gynecologic oncology patients. Abstracts, commentaries, non-controlled studies, and studies without specific data on gynecologic oncology patients were excluded. Meta-analysis was performed on the primary endpoint of LOS. Subgroup analyses were performed based on risk of bias of the studies included, number of ERAS elements, and ERAS compliance. Secondary endpoints were readmission rate, complications, and cost. RESULTS: A total of 31 studies (6703 patients) were included: 5 randomized controlled trials, and 26 cohort studies. Meta-analysis of 27 studies (6345 patients) demonstrated a decrease in LOS of 1.6 days (95% confidence interval, CI 1.2-2.1) with ERAS implementation. Meta-analysis of 21 studies (4974 patients) demonstrated a 32% reduction in complications (OR 0.68, 95% CI 0.55-0.83) and a 20% reduction in readmission (OR 0.80, 95% CI 0.64-0.99) for ERAS patients. There was no difference in 30-day postoperative mortality (OR 0.61, 95% CI 0.23-1.6) for ERAS patients compared to controls. No difference in the odds of complications or reduction in LOS was observed based on number of included ERAS elements or reported compliance with ERAS interventions. The mean cost savings for ERAS patients was $2129 USD (95% CI $712 - $3544). CONCLUSIONS: ERAS protocols decrease LOS, complications, and cost without increasing rates of readmission or mortality in gynecologic oncology surgery. This evidence supports implementation of ERAS as standard of care in gynecologic oncology.

Patterns of genomic loss of heterozygosity predict homologous recombination repair defects in epithelial ovarian cancer.

BACKGROUND: Defects in BRCA1, BRCA2, and other members of the homologous recombination pathway have potential therapeutic relevance when used to support agents that introduce or exploit double-stranded DNA breaks. This study examines the association between homologous recombination defects and genomic patterns of loss of heterozygosity (LOH). METHODS: Ovarian tumours from two independent data sets were characterised for defects in BRCA1, BRCA2, and RAD51C, and LOH profiles were generated. Publically available data were downloaded for a third independent data set. The same analyses were performed on 57 cancer cell lines. RESULTS: Loss of heterozygosity regions of intermediate size were observed more frequently in tumours with defective BRCA1 or BRCA2 (P=10(-11)). The homologous recombination deficiency (HRD) score was defined as the number of these regions observed in a tumour sample. The association between HRD score and BRCA deficiency was validated in two independent ovarian cancer data sets (P=10(-5) and 10(-29)), and identified breast and pancreatic cell lines with BRCA defects. CONCLUSION: The HRD score appears capable of detecting homologous recombination defects regardless of aetiology or mechanism. This score could facilitate the use of PARP inhibitors and platinum in breast, ovarian, and other cancers.

Correlation of corneal endothelial pump site density, barrier function, and morphology in wound repair.

After transcorneal freezing, physiologic function (pump and barrier) of the regenerating rabbit corneal endothelium was evaluated and compared with the morphologic differentiation that occurs during wound healing. Endothelial pump function was investigated utilizing the specific binding of tritiated ouabain to endothelial Na+/K+ ATPase (pump sites); the permeabilities of isolated de-epithelialized corneas to labeled inulin and dextran were measured to determine endothelial barrier function. Endothelial recovery after transcorneal freezing can be described as a three-stage process. Stage one is characterized by the establishment of an initial coverage of the wound by pleomorphic spindle-shaped cells which form a functional but incomplete barrier and minimal pump site density. In stage two, the cells assume a flattened configuration consisting of irregular polygons and establish nearly normal pump capacity. In stage three, a significant remodeling of the monolayer continues despite the layer's early physiologic recovery.