Short-Term and Textbook Surgical Outcomes During the Implementation of a Robotic Gastrectomy Program.

BACKGROUND: Whether gastric cancer patients derive greater benefit from robotic gastrectomy (RG), or open gastrectomy (OG) is unknown. We initiated a RG program in 2018, with prospective short-term outcome monitoring to ensure safety. We hypothesized that the RG program for gastric cancer can be safely implemented with equivalent safety and oncological textbook outcomes (TOs) to conventional open gastrectomy (OG). METHODS: The study included patients who underwent curative-intent OG or RG for gastric adenocarcinoma between January 2018 and December 2021. TO metrics were negative surgical margins, ≥ 15 lymph nodes examined, no severe (Clavien-Dindo grade ≥ IIIa) postoperative complications, no reinterventions within 90 days after surgery, no ICU admission, no prolonged length of stay (LOS; > 10 days), no 90-day postoperative mortality, and no readmission within 90 days after surgery. Overall TO was achieved when all these metrics were met. RESULTS: Of 161 patients, 120 underwent OG, and 41 underwent RG. The two groups' demographic and disease characteristics did not differ significantly. Compared with OG patients, RG patients had a longer median surgery time (348 vs. 282 min), smaller median blood loss volume (50 vs. 150 mL), lower mean prescribed opioid dose at discharge (12 vs. 45 mg), and shorter median LOS (4 vs. 7 days; all p < 0.001). The groups' postoperative complication rates (10% vs. 17%) did not differ significantly (p = 0.283). The overall TO rate of the RG group (73%) was higher than that of the OG group (60%), but the difference was not significant (p = 0.131). CONCLUSION: We were able to implement the RG program safely, without compromising safety or oncological outcomes.

Prognostic significance of acellular mucin in patients undergoing cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) for appendiceal neoplasms.

INTRODUCTION: Appendiceal neoplasms have a propensity for peritoneal dissemination. The standard of care for select individuals is CRS/HIPEC. In the current 8th AJCC Staging system, a finding of only intraperitoneal acellular mucin (M1a) is classified as Stage IVa. There is concern that the current AJCC system may over-stage patients. METHODS: This was a single-institution retrospective review of 164 cases of mucinous appendiceal neoplasm. Patients undergoing CRS/HIPEC with M1a disease were compared to patients with peritoneal deposits containing tumor cells (well-differentiated adenocarcinoma; low-grade mucinous carcinoma peritonei-M1b,G1). Overall and recurrence-free survival were assessed. RESULTS: Median age was 51 years, 70% were female, and 75% White. Sixty-four patients had M1a disease and 100 M1b,G1 disease. M1a disease had a lower median PCI score (11 vs. 20, p = .0001) and a higher rate of complete CRS (62% vs. 50%, p = .021). Median follow-up was 7.6 years (IQR 5.6-10.5 years). For M1a disease, there were no recurrences and only one patient died during the study interval. In comparison, for M1b disease, 66/100 (66%) recurred with a 5-year RFS of 40.5% (HR 8.0, 95% CI 4.9-15.1, p < .0001), and 31/100 (31%) died with a 5-year OS of 84.8% (HR 4.5, 95% CI 2.2-9.2, p < .0001). CONCLUSIONS: Acellular mucin (M1a disease) after CRS/HIPEC for appendiceal neoplasm is associated with longer OS and RFS compared to M1b, G1 disease. Current AJCC staging does not accurately reflect the differing outcomes of these two patient populations. The presence of acellular mucin in the peritoneal cavity should not be perceived as a metastatic equivalent.

Analysis of Opioid Use in Patients Undergoing Open Versus Robotic Gastrectomy.

BACKGROUND: Minimally invasive, robotic gastrectomy is associated with better short-term outcomes and quicker functional recovery. However, the degree to which the robotic approach influences postoperative pain and opioid use after gastrectomy is unknown. Our primary aim was to determine whether the robotic approach to gastrectomy reduces postoperative opioid use compared with the open approach. METHODS: Patients who underwent gastrectomy (November 2018 to September 2021) were identified retrospectively. Clinical characteristics, short-term surgical outcomes, oral morphine equivalent (OME) use, and pain scores were collected. Both groups were managed through an enhanced recovery program in the perioperative period. RESULTS: Of 81 patients, 50 underwent open and 31 underwent robotic gastrectomy. Compared with open gastrectomy patients, robotic gastrectomy patients had longer surgery time (360 vs. 288 min), less blood loss (50 vs. 138 mL), and shorter hospital stay (4 vs. 6 days) (all medians, P < 0.001). Robotic gastrectomy patients used lower OMEs on postoperative days 0-4 (all P < 0.05) and in total for days 0-4 (total mean dose 65.0 vs. 169.5 mg; P < 0.001) than did open gastrectomy patients. The robotic gastrectomy patients were prescribed a lower mean OME dose than the open gastrectomy patients (19.0 vs. 29.0 mg, respectively; P = 0.001). Multivariable analysis showed that robotic approach was associated with lower opioid use (odds ratio 3.70; 95% CI 1.01-14.3; P = 0.049). CONCLUSIONS: Compared with open gastrectomy, robotic gastrectomy reduces opioid use in the early postoperative period and is associated with fewer OME discharge prescriptions and shorter hospital stay.

Implementation of a perioperative-enhanced recovery protocol in patients undergoing open gastrectomy for gastric cancer.

BACKGROUND AND OBJECTIVES: The purpose of this study was to compare surgical outcomes before and after implementation of an enhanced recovery protocol (ERP) in gastrectomy for gastric cancer. METHODS: We included patients who underwent open gastrectomy for gastric cancer before (January 2016 to September 2018) or after (October 2018 to September 2020) ERP implementation. The primary outcome was the postoperative length of stay (LOS). Secondary outcomes included 90-day readmission rates and Clavien-Dindo grade ≥ 3 complications. RESULTS: One hundred patients underwent gastrectomy before (pre-ERP group) and 52 underwent gastrectomy after (ERP group) protocol implementation. Demographic and clinicopathologic characteristics were similar. The median (interquartile range) postoperative LOS was shorter in the ERP group (7.0 days [6.0-8.0] vs. 8.0 days [7.0-11.0]; p < 0.001). The ERP group had similar rates of readmission (33% vs. 24%; p = 0.34) and grade ≥ 3 complications (19% vs. 19%; p = 1.0) compared to the pre-ERP group, but experienced lower rates of surgical wound complications (0% vs. 19%; p < 0.001). Rates of other complications were similar. CONCLUSIONS: Implementation of an ERP in patients undergoing open gastrectomy for gastric cancer is feasible and safe and has the potential to decrease postoperative LOS without increasing complication rates.

Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy for Moderately and Poorly Differentiated Appendiceal Adenocarcinoma: Survival Outcomes and Patient Selection.

BACKGROUND: Moderately and poorly differentiated adenocarcinoma of the appendix represents an aggressive histological variant with a high risk of recurrence and death. METHODS: Overall, 178 patients with moderately and poorly differentiated appendiceal adenocarcinoma were identified from a prospective database. Clinical, pathologic, and treatment factors were analyzed for outcomes. RESULTS: Diagnostic laparoscopy (DL) identified radiographic occult peritoneal metastasis in 25 (42%) patients. These patients had a significantly lower peritoneal carcinomatosis index (PCI) and improved overall survival (OS) compared with those with radiographic disease. Twenty-seven (41%) patients were excluded from cytoreductive surgery (CRS) because of findings on DL, while 116 (65%) patients underwent CRS and hyperthermic intraperitoneal chemotherapy (HIPEC), with a median disease-free survival (DFS) of 23 months. Mucinous histology (hazard ratio [HR] 0.52, p = 0.04) and PCI (HR 1.054, p = 0.02) were independent predictors of DFS. The median OS following CRS and HIPEC was 48 months. Mucinous histology (HR 0.352, p = 0.018), signet ring cells (HR 3.34, p = 0.02), positive peritoneal cytology (HR 0.081, p = 0.04), and PCI (HR 1.076, p = 0.004) were independently associated with OS. Eight-five (73.3%) patients received neoadjuvant chemotherapy, and 40 (47.1%) patients achieved a radiographic response; 36 (42.3%) had stable disease, while 9 (10.6%) had progressive disease. Stable or responsive disease was associated with improved median OS of 44 months, compared with 21 months for those with progressive disease (p = 0.011). CONCLUSIONS: In selected patients, long-term survival can be obtained. Mucinous histology, absence of signet ring cells, negative peritoneal cytology, PCI ≤ 20, and response/stable disease after neoadjuvant chemotherapy are important selection criteria for CRS and HIPEC.

Feeding tube placement during cytoreductive surgery and heated intraperitoneal chemotherapy does not improve postoperative nutrition and is associated with longer length of stay and higher readmission rates.

BACKGROUND: Patients with colorectal cancer and peritoneal carcinomatosis (CRC/PC) may benefit from cytoreductive surgery and heated intraperitoneal chemotherapy (CRS/HIPEC). Nutritional support is frequently required for patients after CRS/HIPEC. It remains unclear if placement of feeding access is of benefit in regard to improving postoperative nutrition in this patient population. MATERIALS AND METHODS: Patients with CRC/PC who underwent complete cytoreduction were evaluated. Preoperative and postoperative nutritional data and discharge outcomes were retrospectively recorded. The presence of a feeding tube and PCI scores were recorded by review of operative notes. Readmission rates were calculated for patients at 30 d and 60 d after discharge from hospital. RESULTS: Forty-one patients underwent CRS/HIPEC, 25 had feeding tube placement at the time of surgery. Weight loss was common after HIPEC as 38 of 41 patients demonstrated weight loss. The mean weight loss was 7.6%. total parenteral nutrition was required at discharge in four patients (7.9%); three of these patients had feeding access placed. There was no difference in the degree of weight loss between groups (7.1 ± 3.7% no tube versus 7.9 ± 5.8% patients with tube; P = 0.608). The mean decrease in albumin was 12.7% but was not significantly different in patients with feeding access and those without (10.0% versus 14.75%; P = 0.773). Sixty-day readmission rates were higher in patients with feeding tubes (36% compared with 0%, P < 0.01). CONCLUSIONS: Significant nutritional loss is common after CRS/HIPEC for patients with CRC/PC. Feeding tube placement does not prevent this and appears to be related to higher readmission rates and longer length of stay.