The newly introduced da Vinci Xi Surgical System hopes to address the shortcomings of its predecessor, specifically robotic arm restrictions and difficulty working in multiple quadrants. We compare the two robot platforms in multiquadrant surgery at a major colorectal referral center. Forty-four patients in the da Vinci Si group and 26 patients in the Xi group underwent sigmoidectomy or low anterior resection between 2014 and 2016. Patient demographics, operative variables, and postoperative outcomes were compared using descriptive statistics. Both groups were similar in age, sex, BMI, pelvic surgeries, and ASA class. Splenic flexure was mobilized in more (p = 0.045) da Vinci Xi cases compared to da Vinci Si both for sigmoidectomy (50 vs 15.4%) and low anterior resection (60 vs 29%). There was no significant difference in operative time (219.9 vs 224.7 min; p = 0.640), blood loss (170.0 vs 188.1 mL; p = 0.289), length of stay (5.7 vs 6 days; p = 0.851), or overall complications (26.9 vs 22.7%; p = 0.692) between the da Vinci Xi and Si groups, respectively. Single-dock multiquadrant robotic surgery, measured by splenic flexure mobilization with concomitant pelvic dissection, was more frequently performed using the da Vinci Xi platform with no increase in operative time, bleeding, or postoperative complications. The new platform provides surgeons an easier alternative to the da Vinci Si dual docking or combined robotic/laparoscopic multiquadrant surgery.

Dorsal lumbar hernias are rare pathologies of the abdominal wall. Such hernias may manifest within the superior lumbar triangle of Grynfeltt (TG) or the triangle of Petit. The aim of our study was to identify and describe variations in the size and anatomy of the TG. The triangle was studied in 50 adult human cadavers, and dimensions and surface area were measured. The TG was identified in 82% of cases. Based on surface area parameters, we were able to classify the triangles into four distinct types. Type I (50%), or small triangles, had a surface area of <5 cm(2). Type II (22%, n=22) were defined as triangles intermediate in size with surface areas of 5-15 cm(2). Type III (10%, 10) were large triangles with surface areas of >15 cm(2). Finally, Type 0 (18%, 18) did not exhibit a triangle; instead, the aponeurosis of the transversus abdominis was enclosed by the external abdominal oblique muscle and the sacrospinalis muscle. We present these data with the hope that after further investigation in a clinical setting, they may serve practitioners in predicting which morphometric variations of the TG most predispose patients to posterior wall herniation.

The essentials for any bowel anastomosis are: adequate perfusion, tension free, accurate tissue apposition, and minimal local spillage. Traditionally, perfusion is measured by assessing palpable pulses in the mesentery, active bleeding at cut edges, and lack of tissue discoloration. However, subjective methods lack predictive accuracy for an anastomotic leak. We used intraoperative indocyanine green (ICG) fluorescence angiography to objectively assess colon perfusion before a bowel anastomosis. Seventy-seven laparoscopic colorectal operations, between June 2013 and June 2014, were retrospectively reviewed. The perfusion to the colon and ileum was clinically assessed, and then measured using the SPY Elite Imaging System. The absolute value provided an objective number on a 0–256 gray-scale to represent differences in ICG fluorescence intensity. The lowest absolute value was used in data analysis for each anastomosis (including small bowel) to represent the theoretical least perfused/weakest anastomotic area. The lowest absolute value recorded was 20 in a patient who underwent a laparoscopic right hemicolectomy for an adenoma, with no postoperative complications. Four low anterior resection patients had additional segments of descending colon resected. There was one mortality in a patient who underwent a laparoscopic right hemicolectomy. This study illustrates an initial experience with the SPY system in colorectal surgery. The SPYprovides an objective, numerical value of bowel perfusion. However, evidence is scant as to the significance of these numbers. Large-scale randomized controlled trials are required to determine specific cutoff values correlated with surgical outcomes, specifically anastomotic leak rates.

Background Within the past decade, colorectal surgery length of stay (LOS) has decreased from an average of 5-6 days to 2-3 days. However, elective colon resections have yet to become a common procedure with the potential for same-day discharge. During the COVID pandemic, hospital capacity was exceptionally strained and colon resections were delayed due to the lack of inpatient beds available. Purpose We sought to create a protocolized ERAS (enhanced recovery after surgery) pathway that would allow for safe and feasible ambulatory colon resections as well as decreasing overall hospital inpatient burden. Research Design Between November 2020 and March 2022, 15 patients were offered same-day discharges under the HOME protocol. Of the 15 patients, 11 patients agreed to be discharged home the day of surgery and followed prospectively for 30 days. All procedures were performed robotically. Study Sample Patients were selected based on level of preoperative health (ASA class 1 and 2), low-risk for loss to follow-up, ability for close family supervision for 3 days postoperatively, and type of procedure (partial colectomy). Close follow-up was achieved with daily telephonic or televideo visits for 3 days post-operatively, as well as a 2-week outpatient clinic follow-up. Data Collection A total of 11 patient underwent same-day surgery utilizing the protocol, 5 females and 6 males, between the ages of 34 and 62. All patients were ASA class 2. Indications for colon resection were cecal volvulus (1), recurrent sigmmoid diverticulitis (9), and Crohn's disease (1). Primary outcome was readmission rates within the 30-days. Results There were no readmissions or complications during the perioperative 30-day period. There was one emergency department return for pain who was not admitted. Average operative time was 132.1 minutes. Conclusion Using a novel enhanced recovery protocol, we demonstrated the feasibility and safety of ambulatory partial colectomy in a highly select small subset of patients.