Circular Stapler Research Articles

The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery

BackgroundLaparoscopic surgery has almost replaced open surgery in many areas of Gastro-Intestinal (GI) surgery. There is currently no published expert consensus statement on the principles of laparoscopic GI surgery. This may have affected the training of new surgeons. This exercise aimed to achieve an expert consensus on important principles of laparoscopic GI surgery. MethodsA committee of 38 international experts in laparoscopic GI surgery proposed and voted on 149 statements in two rounds following a strict modified Delphi protocol. ResultsA consensus was achieved on 133 statements after two rounds of voting. All experts agreed on tailoring the first port site to the patient, whereas 84.2% advised avoiding the umbilical area for pneumoperitoneum in patients who had a prior midline laparotomy. Moreover, 86.8% agreed on closing all 15 mm ports irrespective of the patient's body mass index.There was a 100% consensus on using cartridges of appropriate height for stapling, checking the doughnuts after using circular staplers, and keeping the vibrating blade of the ultrasonic energy device in view and away from vascular structures.An 84.2% advised avoiding drain insertion through a ≥10 mm port site as it increases the risk of port-site hernia. There was 94.7% consensus on adding laparoscopic retrieval bags to the operating count and ensuring any surgical specimen left inside for later removal is added to the operating count. ConclusionThirty-eight experts achieved a consensus on 133 statements concerning various aspects of laparoscopic GI Surgery. Increased awareness of these could facilitate training and improve patient outcomes.

Association of Muscle Fibers with Histopathology in Doughnut Specimens Following Stapled Hemorrhoidopexy and Their Impacts on Postoperative Outcomes

Background Stapled hemorrhoidopexy is widely practiced worldwide since its introduction to the world of proctology and replaced conventional hemorrhoidectomy in treating hemorrhoids. The technique of executing the procedure dictates the outcomes and complications. Here, we attempted to establish the cause of postoperative complications and attributed them to the presence of muscle of fibers in the excised doughnut specimens. Materials and Methods A prospective observational analysis of histopathological specimens obtained from patients who underwent stapled hemorrhoidopexy using procedure for prolapse and hemorrhoids-03 circular staplers in the department of surgery of a tertiary care hospital in southern India was performed, and the correlation between the presence or absence of muscle fibers in the specimens and postoperative complications was evaluated. The patients were followed up for 12 months after the procedure. Results In this study, 155 patients, including 54, 91, and 10 patients with Grade 2, Grade 3, and Grade 4 hemorrhoids, respectively, were included. Group A consisted of 19 patients with muscle fibers on the specimens, whereas Group B consisted of 139 patients without muscle fibers on the specimens. Early complications within 7 days after the procedure were as follows: 21 and 0.7% of the patients in Groups A and B, respectively, presented with postoperative pain with a visual analog scale score of more than 4; 47 and 6% of the patients in Groups A and B, respectively, presented with urinary retention; 26 and 2% of the patients in Groups A and B, respectively, presented with bleeding; and 21 and 2.9% of the patients in Groups A and B, respectively, presented with fecal urgency. A significant association was found between the presence of muscle fibers and early complications ( p < 0.001). Late complications, such as proctalgia and bleeding, accounting for 36.8 and 6.6% in Groups A and B, respectively, were significantly associated with the presence of muscle fibers in histopathology ( p < 0.001). Meanwhile, other late complications, such as incontinence, stenosis, and recurrence, exhibited no association ( p > 0.05). Conclusion The technique in taking purse-string sutures and the depth of the suture bite above the dentate line carry the utmost importance in preventing postoperative complications. Therefore, surgeons should refine their technique of appropriate depth to avoid incorporation of muscle fibers while executing the procedure.

Robot-assisted Minimally Invasive Oesophagectomy - Surgical Variants of Intrathoracic Circular Stapled Oesophagogastric Anastomosis

Anastomotic insufficiency after oesophagectomy contributes significantly to morbidity and mortality of affected patients. A safe surgical technique can reduce the incidence of such anastomotic insufficiencies. In the treatment of oesophageal cancer, the German guideline recommends minimally invasive or hybrid surgical procedures. In most cases, Ivor-Lewis oesophagectomy and continuity reconstruction using a gastric sleeve are performed. Circular stapler anastomosis seems to be superior. The preparation of the anastomosis starts intra-abdominally with mobilisation of the stomach and sparing of the gastroepiploic vessels. After the subsequent intrathoracic mobilisation of the oesophagus, the actual anastomosis construction can take place. Here, the oesophagus is either transected with a stapler closure or openly with scissors. This is followed by a purse-string suture on the open oesophageal stump. Alternatively, partial oesophageal opening with prior purse-string suture may later facilitate insertion of the stapler anvil. The anvil is placed in the oesophageal stump via minithoracotomy or alternatively transorally using a special gastric tube system. Subsequently, the anvil is fixated using the previously performed purse-string suture. Now the gastric sleeve can be pulled into the thorax. The oesophagus and small gastric curvature are placed extrathoracically through the minithoracotomy and a circular stapler is inserted into the gastric tube via an opening of the small curvature. The anastomosis then must be placed remotely from the gastroepiploic arcade. After construction of the anastomosis, the gastric sleeve is separated using a linear stapler. Eventually, the oesophagus and small gastric curvature can be completely recovered. Optionally, an additional suturing over the anastomosis and dissection margin of the gastric sleeve can be performed. In robot-assisted oesophagectomy, the reconstruction of continuity with a circular stapler anastomosis is quite possible and seems comparatively easier to learn. Nevertheless, variations are still possible within this procedure. However, there is no scientific evidence on the advantage for any method in a direct comparison.

Circular vs. linear stapling after minimally invasive and robotic-assisted esophagectomy: a pooled analysis

PurposeCurrent data states that most likely there are differences in postoperative complications regarding linear and circular stapling in open esophagectomy. This, however, has not yet been summarized and overviewed for minimally invasive esophagectomy, which is being performed increasingly.MethodsA pooled analysis was conducted, including 4 publications comparing linear and circular stapling techniques in minimally invasive esophagectomy (MIE) and robotic-assisted minimally invasive esophagectomy (RAMIE). Primary endpoints were anastomotic leakage, pulmonary complications, and mean hospital stay.ResultsSummarizing the 4 chosen publications, no difference in anastomotic insufficiency could be displayed (p = 0.34). Similar results were produced for postoperative pulmonary complications. Comparing circular stapling (CS) to linear stapling (LS) did not show a trend towards a favorable technique (p = 0.82). Some studies did not take learning curves into account. Postoperative anastomotic stricture was not specified to an extent that made a summary of the publications possible.ConclusionsIn conclusion, data is not sufficient to provide a differentiated recommendation towards mechanical stapling techniques for individual patients undergoing MIE and RAMIE. Therefore, further RCTs are necessary for the identification of potential differences between LS and CS. At this point in research, we therefore suggest evading towards choosing a single anastomotic technique for each center. Momentarily, enduring the learning curve of the surgeon has the greatest evidence in reducing postoperative complication rates.

Excision of Deep Endometriosis of the Rectosigmoid: Individualizing Care to the Presenting Pathology

To highlight different surgical approaches for managing deep infiltrating endometriosis involving the rectosigmoid colon. Demonstration of specific surgical techniques with educational narrated video footage. Bowel endometriosis is reported in 3.8% to 37% of patients with endometriosis [1]. Most commonly, the rectosigmoid colon is involved. Pelvic ultrasound and magnetic resonance imaging may be useful in diagnosis and for surgical planning [2]. Treatment options include observation, medications, or surgery. There are various surgical techniques that can be used for excision of deep infiltrating endometriosis involving the rectosigmoid colon. Serosal shaving, discoid resection, and complete resection are the possible types of surgical interventions that are demonstrated in this surgical education video at an academic medical center. Serosal shaving is used for lesions with minimal involvement of the muscularis. It can be done sharply or with electrosurgery and it is imperative to assess bowel integrity after shaving. Discoid resection is used for lesions with muscularis involvement, <3 cm in size, and encompassing less than one-third to a half of the bowel circumference. Full-thickness discoid bowel resection can be done in various ways including manual resection with primary suture closure, regular stapler transabdominally, or EEA stapler (Medtronic EEA Circular Stapler, Minneapolis, MN) transrectally. Segmental resection is used for lesions >3 cm in size, involving >50% of the bowel circumference, or for multifocal lesions. Various suture and stapler methods exist for this technique. Based on the imaging and intraoperative findings, a surgical technique was chosen and demonstrated. The types of surgical techniques demonstrated include laparoscopic serosal shaving, discoid resection with manual resection and primary suture closure, discoid resection with EEA stapler, and segmental resection. Knowledge of different surgical approaches to excise endometriosis is essential to appropriately address a patient's unique pathology. The choice of which surgical technique to use should include consideration of the location of the lesion, depth and circumference of involvement, and the number of nodules present.

Transthoracic Esophagectomy: Hand-sewn Versus Side-to-side Linear-stapled Versus Circular-stapled Anastomosis: A Systematic Review and Meta-analysis.

Three anastomotic techniques are mostly used to create an esophagogastric anastomosis in a transthoracic esophagectomy: hand-sewn (HS), side-to-side linear-stapled (SSLS), and circular-stapled (CS). The aim of this study was to compare surgical outcomes after HS, SSLS, and CS intrathoracic esophagogastric anastomosis. A systematic review using the MEDLINE database was performed to identify original articles analyzing outcomes after HS, SSLS, and CS esophagogastric anastomosis. The main outcome was an anastomotic leakage rate. Secondary outcomes included overall morbidity, major morbidity, and mortality. A meta-analysis of proportions and linear regression models were used to assess the effect of each anastomotic technique on the different outcomes. A total of 101 studies comprising 12,595 patients were included; 8835 (70.1%) with CS, 2532 (20.1%) with HS, and 1228 (9.8%) with SSLS anastomosis. Anastomotic leak occurred in 10% [95% confidence interval (CI), 6%-15%], 9% (95% CI, 6%-13%), and 6% (95% CI, 5%-7%) of patients after HS, SSLS, and CS anastomosis, respectively. Risk of anastomotic leakage was significantly higher with HS anastomosis (odds ratio=1.73, 95% CI: 1.47-2.03, P<0.0001) and SSLS (odds ratio=1.68, 95% CI: 1.36-2.08, P<0.0001), as compared with CS. Overall morbidity (HS: 52% vs. SLSS: 39% vs. CS: 35%) and major morbidity (HS: 33% vs. CS: 19%) rates were significantly lower with CS anastomosis. Mortality rate was 4% (95% CI, 3%-6%), 2% (95% CI, 2%-3%), and 3% (95% CI, 3%-4%) after HS, SSLS, and CS anastomosis, respectively. HS and SSLS intrathoracic esophagogastric anastomoses are associated with significantly higher rates of an anastomotic leak than CS anastomosis.

End to side anastomosis with a circular stapler for minimally invasive Ivor Lewis esophagectomy—how I do it

: The Ivor Lewis MIE has been growing in popularity globally ever since it was made popular among the Western population by J. D. Luketich at the University of Pittsburgh Medical Center (UPMC). Most patients in the West present with distal esophageal or esophago-gastric junction cancers, which favour the Ivor Lewis MIE, and an intrathoracic anastomosis as the operation of choice. However, the debate continues over which type of esophago-gastric anastomosis should be performed. The end-to-side stapled intrathoracic esophago-gastric anastomosis with a 28 or 29 mm circular stapler, and covering the anastomosis with an omental flap, is a well-established standardised technique at the UPMC and Norwich. In experienced hands, this technique is easy to execute once the anvil is inserted into the esophagus and the two purse-string sutures are tied. It has a low leak rate (<5%) when executed correctly. In the rare occurrence of a leak, the exact site of the leak can be visualised with a computerised tomography scan, since the titanium staples are easily identified radiologically. As a result, the defect at the circular anastomosis is easily located endoscopically. In addition, the leak is often small. Altogether, these factors favour the use of an EndoVac to treat the leak from a circular stapler. Hence, the authors advocate doing the circular stapled end-to-side esophago-gastric anastomosis, which is covered with an omental patch under a pleural tent.

Linear Versus Circular Laparoscopic Gastrojejunal Anastomosis of Roux-en-Y Gastric Bypass: Systematic Review and Meta-Analysis of 22 Comparative Studies.

To compare the rate of complications of linear versus circular gastrojejunal anastomosis of laparoscopic Roux-en-Y gastric bypass. A systematic search of PubMed, Embase, and the Cochrane Library databases was carried out using the terms "laparoscopic," "circular," "linear," "anastomosis," "gastric bypass" in accordance to PRISMA guidelines. Only original articles in English language comparing linear versus circular anastomosis were included. No temporal interval was set. Outcome measures were wound infection, bleeding, marginal ulcer, leak, and stricture. Pooled odds ratio (OR) with a 95% confidence interval (CI) was calculated. Heterogeneity was assessed using the I2 statistic. Funnel plots were used to detect publication bias. Twenty-two articles (7 prospective and 15 retrospective) out of 184 retrieved papers were included in this study. The pooled analysis showed a reduced odd of wound infection and bleeding after linear anastomosis. Likelihood of marginal ulcer, leak, and stricture was similar after the 2 techniques. Wound infection was reported in 15 studies (OR, 0.17; 95% CI, 0.06-0.45; P=0.0003; I2=91), bleeding in 9 (OR, 0.45; 95% CI, 0.34-0.59; P=0.00001; I2=6) marginal ulcer in 11 (OR, 0.61; 95% CI, 0.26-1.41; P=0.25; I2=65), leaks in 15 (OR, 0.61; 95% CI, 0.21-1.67; P=0.34; I2=83) and stricture in 18 (OR, 0.48; 95% CI, 0.23-1.00; P=0.05; I2=68). Laparoscopic RYGB can be safely performed both with circular and linear staplers. Rates of wound infection and bleeding were significantly lower after linear gastrojejunal anastomosis.

Modification of the anastomotic technique in completely laparoscopic resection rectopexy with NOSE — a case report

Introduction. We have come a long way from the era of conventional rectal surgery, with most high-volume centres now practising various degrees of laparoscopy assisted colorectal surgeries, via extracorporeal suturing, ex vivo anastomoses, hand-assisted laparoscopic resection anastomoses to robotic rectal resections. However, the limitation to most such techniques remains the fact that these are not ‘completely’ laparoscopic, with varying degrees of open assistance being required, from mobilization, suturing and anastomoses to specimen extraction via separate abdominal incisions or port-site enlargements. These ‘large’ incisions negate some of the advantages of minimal access surgery and lead to complications at such sites, such as wound breakdown, infections, and incisional herniae. This led to the origin of NOTES (Natural Orifice Translumenal Endoscopic Surgery) and the still fairly new concept of NOSE (Natural Orifice Specimen Extraction).Aim. We aim to describe our application of this new frontier in laparoscopic colorectal surgery, doing away with large scars prone to complications.Materials and methods. We describe a case of completely laparoscopic resection rectopexy and trans-rectal extraction of the specimen, with a modified technique of anvil insertion, enabling the faster creation of a larger anastomosis with probably lower anastomotic morbidity.Results and discussion. The patient underwent a ‘completely’ laparoscopic resection rectopexy and had an uneventful immediate post-operative recovery. She had no delayed post-operative complications or recurrence of the rectal prolapse and remained free of constipation as well, over a follow-up period of 6 months.Conclusion. We conclude that this modification of the surgical technique reduces operative time, allows use of larger circular staplers, theoretically reducing the incidence of anastomotic stricture, and being easily reproducible, can be widely applied for better cosmetic and functional outcome.

End-to-side circular stapled versus side-to-side linear stapled intrathoracic esophagogastric anastomosis following minimally invasive Ivor-Lewis esophagectomy: comparison of short-term outcomes.

The search for the optimal procedure for creation of a safe gastroesophageal intrathoracic anastomosis with a lower risk of leakage in totally minimally invasive Ivor-Lewis esophagectomy (TMIIL) is ongoing. In the present study, we compared the outcomes of end-to-side (with circular stapler [CS]) and side-to-side (with linear stapler [LS]) techniques for intrathoracic anastomosis during TMIIL performed in 2 European high-volume centers for upper gastrointestinal surgery. A propensity score method was used to compare the CS and LS groups. We retrospectively evaluated patients with lower esophageal cancer or Siewert type 1 or 2 esophagogastric junction carcinoma who underwent a planned TMIIL esophagectomy, performed from January 2017 to September 2020. The anastomosis was created by a semi-mechanical technique using a LS in one center and by a mechanical technique using a CS in the other center. General features, operative techniques, pathology data, and short-term outcomes were analyzed. Statistical evaluations were performed on the whole cohort, stratifying the analyses by risk strata factors identified with the propensity scores, and on a subgroup of patients matched by propensity score. The primary endpoint of the study was the rate of anastomotic leakage in the two groups. Secondary endpoints included rates of anastomotic stricture and overall postoperative complications. Considering the whole population, 256 patients were included; of those, 220 received the anastomosis with a circular stapler (CS group), and 36 received the anastomosis with a linear stapler (LS group). No significant differences by group in terms of sex, age, American Society of Anesthesiologists physical status classification, and type of neoplasm were showed. The rate of anastomotic leakage did not differ in the two groups (9.6% CS vs. 5.6% LS, p = 0.438), as well as the rate of anastomotic stricture in the 3-month follow-up (0.9% CS vs. 2.8% LS, p = 0.367). The rate of chyle leakage and of pulmonary, cardiac, and infective complications was not significantly different in the groups. After propensity score matching, 72 patients were included in the analysis. The 2 obtained propensity score matched groups did not differ for any of the clinical and pathologic variables considered for the analysis, resulting in well-balanced cohorts. The results obtained on the whole population were confirmed in the matched groups. The results of our study suggest that both techniques for esophagogastric anastomosis during TMIIL are feasible, safe, and effective, with comparable rates of postoperative anastomotic leakage and stricture.

Improved outcomes in proximal gastric bypass surgery following the transition from a conventional circular stapling to an augmented linear stapling protocol

Abstract Objective Bariatric techniques for bypass surgery evolve constantly. Switching from one well-established protocol to another in a running surgical teaching program is challenging. We analyzed clinical outcomes, safety and costs at a single bariatric center transitioning from circular to an augmented linear bypass protocol. Methods Between 2011 and 2018, 454 patients were included in this retrospective study. The circular bypass protocol (CIRC; n=177) was primarily used between 2011–2012. Between 2013–2015 the transition occurred. Thereafter, the augmented linear protocol (aLIN; n=277) was primarily utilized. Results Overall, mean preoperative BMI dropped from 42.2 kg/m2 to 29.6 kg/m2 after 5 years with no difference between groups. Operation times were significantly shorter in the aLIN-group, compared with CIRC-patients at 108 (±32) vs. 120 (±34) minutes (P&amp;lt;0.001), respectively. The reoperation rate was significantly higher in the CIRC vs. aLIN group at n=65 (36%) vs. n=35 (13%; P&amp;lt;0.001), respectively. Specifically, revision due to internal hernia occurred much more frequently in the CIRC-group, n=36 (20%) vs. n=12 (4%; P&amp;lt;0.001). Moreover, reoperation due to gastrojejunostomy-leakage and endoscopic dilatation for anastomotic stenosis was more common in the CIRC vs. aLIN group (P&amp;lt;0.001). Adjusted overall cost per case was lower in aLIN-patients at 15,403 (±7,848) vs. CIRC-patients at 18,525 (±7,850) Swiss Francs (P&amp;lt;0.001). Overall profit was 2,555 ± 4,768 vs. 1,455 ± 5,638 Swiss Francs in the aLIN vs. CIRC-group, respectively (P=0.026). Conclusion This study showed improved clinical outcomes while also secondarily improving financial performance after a gradual transition from a circular stapling protocol to an augmented linear stapling protocol in proximal gastric bypass surgery. The technical transition in this study proves, that if a new technique is superior in terms of safety and postoperative morbidity, it will also be financially beneficial.

Safety and effectiveness of esophagojejunostomy through extracorporeal versus intracorporeal methods after laparoscopic total gastrectomy

Objective: To compare the safety and effectiveness of esophagojejunostomy (EJS) through extracorporeal and intracorporeal methods after laparoscopic total gastrectomy (LTG). Methods: A retrospective cohort study was carried out. Clinicopathological data of 261 gastric cancer patients who underwent LTG, D2 lymphadenectomy, and Roux-en-Y EJS with complete postoperative 6-month follow-up data at the General Surgery Department of Nanfang Hospital from October 2018 to June 2021 were collected. Among these 261 patients, 139 underwent EJS with a circular stapler via mini-laparotomy (extracorporeal group), while 122 underwent intracorporeal EJS (intracorporeal group), including 43 with OrVil(TM) anastomosis (OrVil(TM) subgroup) and 79 with Overlap anastomosis (Overlap subgroup). Compared with the extracorporeal group, the intracorporeal group had higher body mass index, smaller tumor size, earlier T stage and M stage (all P<0.05). Compared with the Overlap subgroup, the Orvil(TM) subgroup had higher proportions of upper gastrointestinal obstruction and esophagus involvement, and more advanced T stage (all P<0.05). No other significant differences in the baseline data were found (all P>0.05). The primary outcome was complications at postoperative 6-month. The secondary outcomes were operative status, intraoperative complication and postoperative recovery. Continuous variables with a skewed distribution are expressed as the median (interquartile range), and were compared using Mann-Whitney U test. Categorical variables are expressed as the number and percentage and were compared with the Pearson chi-square, continuity correction or Fisher's exact test. Results: Compared with the extracorporeal group, the intracorporeal group had smaller incision [5.0 (1.0) cm vs. 8.0 (1.0) cm, Z=-10.931, P=0.001], lower rate of combined organ resection [0.8% (1/122) vs. 7.9% (11/139), χ(2)=7.454, P=0.006] and higher rate of R0 resection [94.3% (115/122) vs. 84.9 (118/139), χ(2)=5.957, P=0.015]. The morbidity of intraoperative complication in the extracorporeal group and intracorporeal group was 2.9% (4/139) and 4.1% (5/122), respectively (χ(2)=0.040, P=0.842). In terms of postoperative recovery, the extracorporeal group had shorter time to liquid diet [(5.1±2.4) days vs. (5.9±3.6) days, t=-2.268, P=0.024] and soft diet [(7.3±3.7) days vs. (8.8±6.5) days, t=-2.227, P=0.027], and shorter postoperative hospital stay [(10.5±5.1) days vs. (12.2±7.7) days, t=-2.108, P=0.036]. The morbidity of postoperative complication within 6 months in the extracorporeal group and intracorporeal group was 25.9% (36/139) and 31.1%, (38/122) respectively (P=0.348). Furthermore, there was also no significant difference in the morbidity of postoperative EJS complications [extracorporeal group vs. intracorporeal group: 5.0% (7/139) vs. 82.% (10/122), P=0.302]. The severity of postoperative complications between the two groups was not statistically significant (P=0.289). In the intracorporeal group, the Orvil(TM) subgroup had more estimated blood loss [100.0 (100.0) ml vs.50.0 (50.0) ml, Z=-2.992, P=0.003] and larger incision [6.0 (1.0) cm vs. 5.0 (1.0) cm, Z=-3.428, P=0.001] than the Overlap subgroup, seemed to have higher morbidity of intraoperative complication [7.0% (3/43) vs. 2.5% (2/79),P=0.480] and postoperative complications [37.2% (16/43) vs. 27.8% (22/79), P=0.286], and more severe classification of complication (P=0.289). Conclusions: The intracorporeal EJS after LTG has similar safety to extracorporeal EJS. As for intracorporeal EJS, the Overlap method is safer and has more potential advantages than Orvil(TM) method, and is worthy of further exploration and optimization.

Technical difficulties and countermeasures of digestive tract reconstruction in robotic radical gastrectomy for gastric cancer

There still remain some problemsin digestive tract reconstruction after robotic radical gastrectomy for gastric cancer at present, such as great surgical difficulties and high technical requirements. Based on the surgical experience of the Gastric Surgery Department of Union Hospital, Fujian Medical University and the literatures at home and abroad, relevant issues are discussed in terms of robotic radical distal gastrectomy (Billroth I, Billroth II, and Roux-en-Y gastrojejunostomy), proximal gastrectomy (double-channel and double-muscle flap anastomosis), and total gastrectomy (Roux-en-Y anastomosis, functional end-to-end anastomosis, FEEA, π-anastomosis, Overlap anastomosis, and modified Overlap anastomosis with delayed amputation of jejunum, i.e. later-cut Overlap). This article mainly includes (1) The principles of digestive tract reconstruction after robotic radical gastrectomy for gastric cancer. (2) Digestive tract reconstruction after robotic radical distal gastrectomy: Aiming at the weakness of traditional triangular anastomosis, we introduce the improvement of the technical difficulty, namely "modified triangular anastomosis", and point out that because Billroth II anastomosis is a common anastomosis method in China at present, manual suture under robot is more convenient and safe, and can effectively avoid anastomotic stenosis. (3) Digestive tract reconstruction after robotic proximal gastrectomy: It mainly includes double channel anastomosis and double muscle flap anastomosis, but these reconstruction methods are relatively complicated, and robotic surgery has not been widely carried out at present. (4) Digestive tract reconstruction after robotic total gastrectomy: The most classic one is Roux-en-Y anastomosis, mainly using circular stapler for end-to-side esophagojejunal anastomosis and linear stapler for side-to-side esophagojejunal anastomosis, for which we discuss the solutions to the existing technical difficulties. With the continuous innovation of robotic surgical system and anastomosis instruments, and with the gradual improvement of anastomosis technology, it is believed that digestive tract reconstruction after robotic radical gastrectomy for gastric cancer will have a good application prospect in gastric cancer surgery.

Comparison of changes in body-fat mass and reflux esophagitis among reconstruction methods for proximal gastrectomy

Although proximal gastrectomy (PG) is a function-preserving surgical option, it remains unclear as to which reconstruction method can prevent reflux and maintain body composition. Patients who underwent PG at Keio University between April 2011 and November 2018 were analyzed. Changes in the subcutaneous and visceral adipose tissues were comparatively assessed before and after a year of surgery for three common reconstruction methods. We also compared the endoscopic findings of reflux esophagitis and the number of patients prescribed with proton-pump inhibitor after a year of surgery. This study included 76 patients, of which 33 patients underwent esophagogastrostomy with a circular stapler (CS), 35 under double flap (DF) reconstruction, and 8 underwent double tract (DT) reconstruction. Comparing esophagogastrostomy (CS and DF) and DT showed that esophagogastrostomy could significantly preserve both subcutaneous and visceral adipose tissues (P<0.001 and P=0.04, respectively). However, the change in the subcutaneous and visceral adipose tissues was comparable between CS and DF. As for reflux esophagitis, DF showed the lowest incidence rate for esophagitis and the least number of patients who were prescribed a proton-pump inhibitor. DF is a relatively better reconstruction method for preserving fat mass and preventing reflux among the three common reconstruction methods.

Left thoracoscopic approach in the supine position for torsion of the residual esophagus after esophagectomy: a case report

BackgroundAnastomotic stenosis can occur after esophagectomy and gastric tube reconstruction. The effective surgical treatment for refractory anastomotic stenosis, which seems difficult to resolve with endoscopic treatment, has not been established. We report a case of refractory stenosis due to esophageal torsion in which reconstructive surgery was possible using a left thoracoscopic approach in the supine position.Case presentationA 72-year-old man who underwent thoracoscopic subtotal esophagectomy and retrosternal gastric tube reconstruction for esophageal cancer 6 months previously presented to us. Postoperative endoscopy revealed that the residual esophagus was twisted approximately 360°, just above the anastomotic site. Conservative endoscopic treatment failed to improve the condition due to severe passage obstruction, and reconstructive surgery was repeated. Surgery was performed in the supine position using a left thoracoscopic approach. The entire circumferences of the gastric tube and residual esophagus were dissected from the inferior mediastinum to the top of the sternum, with focus on preserving the right gastroepiploic vein and gastric-tube wall. Subsequently, laparoscopic surgery was performed to remove the gastric tube from the thoracoabdominal junction. After separating the esophagus on the oral side of the torsion from the left cervical wound, the abdomen was opened, the gastric tube was pulled out through the abdominal wound, and adhesions in the abdominal cavity were peeled off to raise the gastric tube cranially via the retrosternal route. An end-to-side anastomosis was performed using a circular stapler, and the esophageal torsion and previous anastomosis were resected. Oral intake was resumed on the 7th postoperative day, and the patient was discharged on the 38th day.ConclusionsAfter subtotal esophagectomy and retrosternal gastric tube reconstruction, the left thoracoscopic approach is one of the most minimally invasive approaches and is especially useful for preserving the right gastroepiploic artery and veins and for mobilizing the gastric tube wall.

Robot-assisted minimally invasive esophagectomy (RAMIE) vs. hybrid minimally invasive esophagectomy: propensity score matched short-term outcome analysis of a European high-volume center

IntroductionTransthoracic esophagectomy is a highly complex and sophisticated procedure with high morbidity rates and a significant mortality. Surgical access has consistently become less invasive, transitioning from open esophagectomy to hybrid esophagectomy (HE) then to totally minimally invasive esophagectomy (MIE), and most recently to robot-assisted minimally invasive esophagectomy (RAMIE), with each step demonstrating improved patient outcomes. Aim of this study with more than 600 patients is to complete a propensity-score matched comparison of postoperative short-term outcomes after highly standardized RAMIE vs. HE in a European high volume center.Patients and MethodsSix hundred and eleven patients that underwent transthoracic Ivor–Lewis esophagectomy for esophageal cancer between May 2016 and May 2021 were included in the study. In January 2019, we implemented an updated robotic standardized anastomotic technique using a circular stapler and ICG (indocyanine green) for RAMIE cases. Data were retrospectively analyzed from a prospectively maintained IRB-approved database. Outcomes of patients undergoing standardized RAMIE from January 2019 to May 2021 were compared to our overall cohort from May 2016–April 2021 (HE) after a propensity-score matching analysis was performed.ResultsSix hundred and eleven patients were analyzed. 107 patients underwent RAMIE. Of these, a total of 76 patients underwent a robotic thoracic reconstruction using the updated standardized circular stapled anastomosis (RAMIE group). A total of 535 patients underwent HE (Hybrid group). Seventy patients were propensity-score matched in each group and analysis revealed no statistically significant differences in baseline characteristics. RAMIE patients had a significantly shorter ICU stay (p = 0.0218). Significantly more patients had no postoperative complications (Clavien Dindo 0) in the RAMIE group [47.1% vs. 27.1% in the HE group (p = 0.0225)]. No difference was seen in lymph node yield and R0 resection rates. Anastomotic leakage rates when matched were 14.3% in the hybrid group vs. 4.3% in the RAMIE group (p = 0.07).ConclusionOur analysis confirms the safety and feasibility of RAMIE and HE in a large cohort after propensity score matching. A regular postoperative course (Clavien–Dindo 0) and a shorter ICU stay were seen significantly more often after RAMIE compared to HE. Furthermore it shows that both procedures provide excellent short-term oncologic outcomes, regarding lymph node harvest and R0 resection rates. A randomized controlled trial comparing RAMIE and HE is still pending and will hopefully contribute to ongoing discussions.

Robotic-assisted minimally invasive Ivor Lewis esophagectomy within the prospective multicenter German da Vinci Xi registry trial

PurposeRobotic-assisted minimally invasive esophagectomy (RAMIE) has become one standard approach for the operative treatment of esophageal tumors at specialized centers. Here, we report the results of a prospective multicenter registry for standardized RAMIE.MethodsThe German da Vinci Xi registry trial included all consecutive patients who underwent RAMIE at five tertiary university centers between Oct 17, 2017, and Jun 5, 2020. RAMIE was performed according to a standard technique using an intrathoracic circular stapled esophagogastrostomy.ResultsA total of 220 patients were included. The median age was 64 years. Total minimally invasive RAMIE was accomplished in 85.9%; hybrid resection with robotic-assisted thoracic approach was accomplished in an additional 11.4%. A circular stapler size of ≥28 mm was used in 84%, and the median blood loss and operative time were 200 (IQR: 80–400) ml and 425 (IQR: 335–527) min, respectively. The rate of anastomotic leakage was 13.2% (n=29), whereas the two centers with >70 cases each had rates of 7.0% and 12.0%. Pneumonia occurred in 19.5% of patients, and the 90-day mortality was 3.6%. Cumulative sum analysis of the operative time indicated the end of the learning curve after 22 cases.ConclusionsHigh-quality multicenter registry data confirm that RAMIE is a safe procedure and can be reproduced with acceptable leak rates in a multicenter setting. The learning curve is comparably low for experienced robotic surgeons.

Circular stapling anastomosis with indocyanine green fluorescence imaging for cervical esophagogastric anastomosis after thoracoscopic esophagectomy: a propensity score-matched analysis

BackgroundThoracoscopic esophagectomy has been extensively used worldwide as a curative surgery for patients with esophageal cancer; however, complications such as anastomotic leakage and stenosis remain a major concern. Therefore, the objective of this study was to evaluate the efficacy of circular stapling anastomosis with indocyanine green (ICG) fluorescence imaging, which was standardized for cervical esophagogastric anastomosis after thoracoscopic esophagectomy.MethodsAltogether, 121 patients with esophageal cancer who underwent thoracoscopic esophagectomy with radical lymph node dissection and cervical esophagogastric anastomosis from November 2009 to December 2020 at Tottori University Hospital were enrolled in this study. Patients who underwent surgery before the anastomotic method was standardized were included in the classical group (n = 82) and patients who underwent surgery after the anastomotic method was standardized were included in the ICG circular group (n = 39). The short-term postoperative outcomes, including anastomotic complications, were compared between the two groups using propensity-matched analysis and the risk factors for anastomotic leakage were evaluated using logistic regression analyses.ResultsOf the 121 patients, 33 were included in each group after propensity score matching. The clinicopathological characteristics of patients did not differ between the two groups after propensity score matching. In terms of perioperative outcomes, a significantly higher proportion of patients who underwent surgery using the laparoscopic approach (P < 0.001) and narrow gastric tube (P = 0.003), as well as those who had a lower volume of blood loss (P = 0.009) in the ICG circular group were observed after matching. Moreover, the ICG circular group had a significantly lower incidence of anastomotic leakage (39% vs. 9%, P = 0.004) and anastomotic stenosis (46% vs. 21%, P = 0.037) and a shorter postoperative hospital stay (30 vs. 20 days, P < 0.001) than the classical group. According to the multivariate analysis, the anastomotic method was an independent risk factor for anastomotic leakage after thoracoscopic esophagectomy (P = 0.013).ConclusionsCircular stapling anastomosis with ICG fluorescence imaging is effective in reducing complications such as anastomotic leakage and stenosis.

Assessing optimal Roux-en-Y reconstruction technique after total gastrectomy using the Postgastrectomy Syndrome Assessment Scale-45.

BACKGROUNDFollowing a total gastrectomy, patients suffer the most severe form of postgastrectomy syndrome. This is a significant clinical problem as it reduces quality of life (QOL). Roux-en-Y reconstruction, which is regarded as the gold standard for post-total gastrectomy reconstruction, can be performed using various techniques. Although the technique used could affect postoperative QOL, there are no previous reports regarding the same.AIMTo investigate the effect of different techniques on postoperative QOL. The data was collected from the registry of the postgastrectomy syndrome assessment study (PGSAS).METHODSIn the present study, we analyzed 393 total gastrectomy patients from those enrolled in PGSAS. Patients were divided into groups depending on whether antecolic or retrocolic jejunal elevation was performed, whether the Roux limb was “40 cm”, “shorter” (≤ 39 cm), or “longer” (≥ 41 cm), and whether the device used for esophageal and jejunal anastomosis was a circular or linear stapler. Subsequently, we comparatively investigated postoperative QOL of the patients.RESULTSReconstruction route: Esophageal reflux subscale (SS) occurred significantly less frequently in patients who underwent antecolic reconstruction. Roux limb length: “Shorter” Roux limb did not facilitate esophageal reflux SS and somewhat attenuated indigestion SS and abdominal pain SS. Anastomosis technique: In terms of esophagojejunostomy techniques, no differences were observed.CONCLUSIONThe techniques used for total gastrectomy with Roux-en-Y reconstruction significantly affected postoperative symptoms. Our results suggest that elevating the Roux limb, which is not overly long, through an antecolic route may improve patients’ QOL.

36: ANASTOMOTIC STRICTURE AFTER IVOR LEWIS OESOPHAGECTOMY—AN EVALUATION OF INCIDENCE, RISK FACTORS AND TREATMENT

Abstract Background and aim Anastomotic stricture is a recognised complication after oesophagectomy. It can impact on patient quality of life with some patients requiring multiple dilatations. The aim of this study was to evaluate the frequency of strictures, contributing factors and the long-term outcomes of management in patients undergoing oesophagectomy with thoracic anastomosis using a standardised circular stapled technique. Methods All patients who underwent a two-stage transthoracic oesophagectomy with curative intent between January 2010 and December 2019 at the Northern Oesophago-Gastric Unit (NOGU) in Newcastle upon Tyne, UK were included. All patients who underwent a stapled (circular) intrathoracic anastomosis using a gastric conduit were included. Stricture incidence, number of dilatations to treat strictures and refractory stricture rate were recorded. Results Overall 705 patients were included with 192 (27.2%) developing strictures. Refractory strictures occurred in 38 patients (5.4%). One, two and three dilatations were needed for resolution of symptoms in 46 (37.4%), 23 (18.7%) and 20 (16.3%) patients respectively. Multivariable analysis identified the occurrence of an anastomotic leak (OR 1.906, 95% CI 1.088–3.341, P = 0.024) and circular stapler size less than 28 mm (OR 1.462, 95% CI 1.033–2.070, P = 0.032) as independent predictors of stricture occurrence. Patients with anastomotic leaks were more likely to develop refractory strictures (13.1% vs. 4.7%, OR 3.089, 95% CI 1.349–7.077, P = 0.008). Conclusion This study highlighted that 27.2% of patients having a circular stapled anastomosis required dilatation after surgery. However, most strictures were successfully treated after two dilatations, but 5% of patients had longer-term problems with refractory strictures.