Reduction of the Incidence of Delayed Gastric Emptying in Side-to-Side Gastrojejunostomy in Subtotal Stomach-Preserving Pancreaticoduodenectomy

Robot-assisted versus laparoscopic pancreatoduodenectomy: a pan-European multicenter propensity-matched study

BACKGROUND

The use of robot-assisted and laparoscopic pancreatoduodenectomy is increasing, yet large adjusted analyses that can be generalized internationally are lacking. This study aimed to compare outcomes after robot-assisted pancreatoduodenectomy and laparoscopic pancreatoduodenectomy in a pan-European cohort.

METHODS

An international multicenter retrospective study including patients after robot-assisted pancreatoduodenectomy and laparoscopic pancreatoduodenectomy from 50 centers in 12 European countries (2009-2020). Propensity score matching was performed in a 1:1 ratio. The primary outcome was major morbidity (Clavien-Dindo ≥III).

RESULTS

Among 2,082 patients undergoing minimally invasive pancreatoduodenectomy, 1,006 underwent robot-assisted pancreatoduodenectomy and 1,076 laparoscopic pancreatoduodenectomy. After matching 812 versus 812 patients, the rates of major morbidity (31.9% vs 29.6%; P = .347) and 30-day/in-hospital mortality (4.3% vs 4.6%; P = .904) did not differ significantly between robot-assisted pancreatoduodenectomy and laparoscopic pancreatoduodenectomy, respectively. Robot-assisted pancreatoduodenectomy was associated with a lower conversion rate (6.7% vs 18.0%; P < .001) and higher lymph node retrieval (16 vs 14; P = .003). Laparoscopic pancreatoduodenectomy was associated with shorter operation time (446 minutes versus 400 minutes; P < .001), and lower rates of postoperative pancreatic fistula grade B/C (19.0% vs 11.7%; P < .001), delayed gastric emptying grade B/C (21.4% vs 7.4%; P < .001), and a higher R0-resection rate (73.2% vs 84.4%; P < .001).

CONCLUSION

This European multicenter study found no differences in overall major morbidity and 30-day/in-hospital mortality after robot-assisted pancreatoduodenectomy compared with laparoscopic pancreatoduodenectomy. Further, laparoscopic pancreatoduodenectomy was associated with a lower rate of postoperative pancreatic fistula, delayed gastric emptying, wound infection, shorter length of stay, and a higher R0 resection rate than robot-assisted pancreatoduodenectomy. In contrast, robot-assisted pancreatoduodenectomy was associated with a lower conversion rate and a higher number of retrieved lymph nodes as compared with laparoscopic pancreatoduodenectomy.

Risk stratification of clinically relevant delayed gastric emptying after pancreaticoduodenectomy

BACKGROUND

Delayed gastric emptying (DGE) remains one of the major complications after pancreaticoduodenectomy (PD), with discrepant reports of its contributing factors. This study aimed to develop a nomogram to identify potential predictors and predict the probability of DGE after PD.

METHODS

This retrospective study enrolled 422 consecutive patients who underwent PD from January 2019 to December 2021 at our institution. The LASSO algorithm and multivariate logistic regression were performed to identify independent risk and protective factors associated with clinically relevant delayed gastric emptying (CR-DGE). A nomogram was established based on the selected variables. Then, the calibration curve, ROC curve, decision curve analysis (DCA), and clinical impact curve (CIC) were applied to evaluate the predictive performance of our model. Finally, an independent cohort of 45 consecutive patients from January 2022 to March 2022 was enrolled to further validate the nomogram.

RESULTS

Among 422 patients, CR-DGE occurred in 94 patients (22.2%). A previous history of chronic gastropathy, intraoperative plasma transfusion ≥ 400 ml, end-to-side gastrointestinal anastomosis, intra-abdominal infection, incisional infection, and clinically relevant postoperative pancreatic fistula (CR-POPF) were identified as risk predictors. Minimally invasive pancreaticoduodenectomy (MIPD) was demonstrated to be a protective predictor of CR-DGE. The areas under the curve (AUCs) were 0.768 (95% CI, 0.706-0.830) in the development cohort, 0.766 (95% CI, 0.671-0.861) in the validation cohort, and 0.787 (95% CI, 0.633-0.940) in the independent cohort. Then, we built a simplified scale based on our nomogram for risk stratification.

CONCLUSIONS

Our study identified seven predictors and constructed a validated nomogram that effectively predicted CR-DGE for patients who underwent PD.

The impact of gastrojejunostomy orientation on delayed gastric emptying after pancreaticoduodenectomy: a single center comparative analysis

BACKGROUND

Delayed gastric emptying (DGE) represents the most frequent complication after pancreaticoduodenectomy (PD). Aim of this study was to evaluate the impact of gastrojejunostomy (GJ)orientation on DGE incidence after PD.

METHODS

One-hundred and twenty-one consecutive PDs were included in the analysis and divided in the horizontal (H-GJ group) and vertical GJ anastomosis groups (V-GJ group). Postoperative data and the value of the flow angle between the efferent jejunal limb and the stomach of the GJ anastomosis at the upper gastrointestinal series were registered.

RESULTS

Seventy-five patients (62%)underwent H-GJ, while 46 patients (38%)underwent V-GJ. The incidence of DGE was significantly lower in the V-GJ group as compared to the H-GJ group (23.9%vs45.3%; p = 0.02). V-GJ was also associated to a less severe DGE manifestation (p = 0.006). The flow angle was significantly lower in case of V-GJ as compared to H-GJ (24.5°vs37°; p = 0.002). At the multivariate analysis, ASA score≥3 (p = 0.02), H-GJ (p = 0.03), flow angle>30°(p = 0.004) and Clavien-Dindo≥3 (p = 0.03) were recognized as independent prognostic factors for DGE. These same factors were independent prognostic features also for a more severe DGE manifestation.

CONCLUSION

VGJ and the more acute flow angle appear to be associated to a lower incidence rate and severity of DGE. This modified technique should be considered by surgeons in order to reduce postoperative DGE occurrence.

Perioperative Outcomes of Robotic Pancreaticoduodenectomy: a Propensity-Matched Analysis to Open and Laparoscopic Pancreaticoduodenectomy

INTRODUCTION

Robotic pancreaticoduodenectomy is slowly gaining acceptance within pancreatic surgery. Advantages have been demonstrated for robotic surgery in other fields, but robust data for pancreaticoduodenectomy is limited. The aim of this study was to compare the short-term outcomes of robotic pancreaticoduodenectomy (RPD) to open pancreaticoduodenectomy (OPD) and laparoscopic pancreaticoduodenectomy (LPD).

METHODS

Patients who underwent a pancreaticoduodenectomy between January 2011 and July 2019 at the Johns Hopkins Hospital were included in this retrospective propensity-matched analysis. The RPD cohort was matched to patients who underwent OPD in a 1:2 fashion and LPD in a 1:1 fashion. Short-term outcomes were analyzed for all three cohorts.

RESULTS

In total, 1644 patients were included, of which 96 (5.8%) underwent RPD, 131 (8.0%) LPD, and 1417 (86.2%) OPD. RPD was associated with a decreased incidence of delayed gastric emptying (9.4%) compared to OPD (23.5%; P = 0.006). The median estimated blood loss was significantly less in the RPD cohort (RPD vs OPD, 150 vs 487 mL; P < 0.001, RPD vs LPD, 125 vs 300 mL; P < 0.001). Compared to OPD, the robotic approach was associated with a shorter median length of stay (median 8 vs 9 days; P = 0.014) and a decrease in wound complications (4.2% vs 16.7%; P = 0.002). The incidence of other postoperative complications was comparable between RPD and OPD, and RPD and LPD.

CONCLUSION

In the hands of experienced surgeons, RPD may have a modest yet statistically significant reduction in estimated blood loss, postoperative length of stay, wound complications, and delayed gastric emptying comparing to OPD in similar patients.

An invaginated pancreaticogastrostomy following subtotal stomach-preserving pancreaticoduodenectomy: A prospective observational study

BACKGROUND/OBJECTIVE

Postoperative pancreatic fistula (POPF) leads to life-threatening complications after pancreaticoduodenectomy (PD). Pancreaticogastrostomy (PG) often adopted as a reconstruction technique after PD to prevent POPF. Delayed gastric emptying (DGE) following PD is the most common complication that compromises the quality of life. Subtotal stomach-preserving PD (SSPPD) preserves the pooling ability of the stomach and minimize the occurrence of DGE. This study aimed to describe our PG technique following SSPPD and evaluate the perioperative outcomes.

METHODS

The study included patients who underwent PG following SSPPD from August 2013 to July 2020 at our institution. An invaginated PG was performed by one-layer eight interrupted sutures with a lost stent. Patients' demographics and perioperative outcomes were documented.

RESULTS

This technique was applied in 72 patients with a median age of 75 years. The median operative time was 342 min. The clinically relevant POPF, DGE and post-pancreatectomy hemorrhage was 4 (5.6%), 5 (6.9%), and 10 (13.9%), respectively. Although the drain fluid amylase concentration on postoperative day 3 was significantly higher in clinically relevant POPF (CR-POPF) positive group (median, 2006 U/L vs. 74 U/L in CR-POPF negative group, p = 0.002), none of the risk factors including disease pathology, pancreatic duct diameter, texture of pancreas and excessive blood loss were significantly associated with CR-POPF. Other morbidity ≥ Clavien-Dindo classification II occurred in 29 patients (40.3%). The 90-days operative mortality was two (2.8%).

CONCLUSIONS

This novel method of one-layer invaginated PG following SSPPD is safe and dependable procedure with acceptable morbidity and mortality.

Effect of Rikkunshito, a Traditional Japanese Herbal Medicine, on Delayed Gastric Emptying and Oral Dietary Intake After Pancreaticoduodenectomy: A Prospective, Randomized, Single-Center, Open-Labeled Study

Introduction

Delayed gastric emptying (DGE) remains an important problem after pancreaticoduodenectomy (PD). There is a lack of effective treatments for early recovery of oral dietary intake. Rikkunshito (RKT), a Japanese herbal medicine, has been gaining attention as a facilitator of gastric emptying. We evaluated the effects of RKT on DGE after PD.

Methods

In this prospective, randomized, open-labeled study, patients were randomly allocated before PD in a 1:1 ratio to the RKT group or the control group that received no additional treatment. The RKT group received 2.5 g of RKT three times daily (7.5 g/day) from postoperative day (POD) 1 to POD 21. The primary endpoint was the incidence of DGE. Secondary endpoints were short-term postoperative outcomes including oral dietary intake volume and perioperative changes in levels of the hormones ghrelin and leptin. Patients were observed until hospital discharge.

Results

Twenty-six patients in each group (n = 52) completed the protocol treatment and were included in the analysis set. There were no statistically significant differences in basic characteristics and operative factors. The overall incidence of DGE was not statistically different between the RKT and control groups (30.8% vs 30.8%, p>0.9999). There were no statistically significant differences in the amount of postoperative oral dietary intake represented by total dietary intake (TDI) up to POD 14 and POD 21, complications, and length of hospital stay. No adverse events related to this study were observed. In the RKT group, total ghrelin and acyl-ghrelin were significantly upregulated and leptin was significantly downregulated earlier than in the control group.

Conclusion

RKT treatment from POD 1 to 21 did not reduce the incidence of DGE and had no clinically beneficial effect on short-term postoperative outcomes irrespective of changes in hormone levels.

Delayed Gastric Emptying as a Complication of Whipple's Procedure: Could it be Much Less Frequent than Anticipated? Could the Definition Be Revised? A Single Center Experience

Objective

Whipple's procedure for periampullary tumors has significant risks and complications. Delayed gastric emptying has the highest rate. Although the International Study Group of Pancreatic Surgery defined (ISGPS) this entity, multiple definitions still exist among authors. This study aims to revise the definition.

Method

Seventy-three consecutive patients were analyzed for complications, particularly delayed gastric emptying. All patients underwent a standardized surgery. Procedures used for total pancreatectomies and benign diseases were excluded.

Results

A total of 73 patients were included in the study. Intra-abdominal complications were observed in 15 (20.6%) patients. Grade C delayed gastric emptying was observed in only one (1.4%) patient. Grade A and B disease were observed in three (4.1%) patients. However, they responded well to conservative methods, causing no extra morbidity.

Conclusion

Grade A and B delayed gastric emptying can be observed after any gastrointestinal surgery. These patients respond well to simple conservative methods with nasogastric intubation. Drainage of the intra-abdominal collection resolves the emptying problem (if any). Only grade C disease without other intra-abdominal complications can be accepted as a complication of this procedure. ISGPS definition does not include the cause. Thus, the definition and grading can be revised.

Use of Video Review to Investigate Technical Factors That May Be Associated With Delayed Gastric Emptying After Pancreaticoduodenectomy

Importance

Technical proficiency at robotic pancreaticoduodenectomy (RPD) and video assessment are promising tools for understanding postoperative outcomes. Delayed gastric emptying (DGE) remains a major driver of cost and morbidity after pancreaticoduodenectomy.

Objective

To determine if technical variables during RPD are associated with postoperative DGE.

Design, Setting, and Participants

A retrospective study was conducted of technical assessment performed in all available videos (n = 192) of consecutive RPDs performed at a single academic institution from October 3, 2008, through September 27, 2016.

Exposures

Video review of gastrojejunal anastomosis during RPD.

Main Outcomes and Measures

Delayed gastric emptying was classified according to International Study Group of Pancreatic Surgery criteria. Video analysis reviewed technical variables specific in the construction of the gastrojejunal anastomosis. Using multivariate analysis, DGE was correlated with known patient variables and technical variables, individually and combined.

Results

Of 410 RPDs performed, video was available for 192 RPDs (80 women and 112 men; mean [SD] age, 65.7 [11.1] years). Delayed gastric emptying occurred in 41 patients (21.4%; grade A, 15; grade B, 14; and grade C, 12). Patient variables contributing to DGE on multivariate analysis were advanced age (odds ratio [OR] 1.11; 95% CI, 1.05-1.16; P < .001), small pancreatic duct size (OR, 0.84; 95% CI, 0.72-0.98; P = .03), and postoperative pseudoaneurysm (OR, 17.29; 95% CI, 2.34-127.78; P = .005). However, technical variables contributing to decreased DGE on multivariate analysis included the flow angle (within 30° of vertical) between the stomach and efferent jejunal limb (OR, 0.25; 95% CI, 0.08-0.79; P = .02), greater length of the gastrojejunal anastomosis (OR, 0.40; 95% CI, 0.20-0.77; P = .006), and a robotic-sewn anastomosis (robotic suture vs stapler: OR, 0.30; 95% CI, 0.09-0.95; P = .04).

Conclusions and Relevance

This study examines modifiable technical factors through the use of review of video obtained at the time of operation and suggests ways by which the surgical construction of the gastrojejunal anastomosis during RPD may reduce the incidence of DGE as a framework for prospective quality improvement.

Delayed Gastric Emptying in Side-to-Side Gastrojejunostomy in Pancreaticoduodenectomy: Result of a Propensity Score Matching

BACKGROUND

Delayed gastric emptying (DGE) is one of the most common morbidities of pancreaticoduodenectomy (PD). The aim of this study was to clarify whether the incidence of DGE can be reduced by side-to-side gastric greater curvature-to-jejunal anastomosis in subtotal stomach-preserving pancreaticoduodenectomy (SSPPD).

METHODS

The clinical data of 253 patients who had undergone PD were examined. Of a total of 188 patients who had undergone SSPPD, a gastrojejunostomy (GJ) was performed with end-to-side anastomosis in 87 patients (SSPPD-ETS group), and a GJ was performed with a greater curvature side-to-jejunal side anastomosis in 101 patients (SSPPD-STS group). After propensity score matching, the matched cohort consisted of 74 patients in each group. The postoperative data were evaluated according to the International Study Group of Pancreatic Surgery grade of DGE.

RESULTS

The total incidence of DGE was 9.4% in the SSPPD-ETS group and 4% in the SSPPD-STS group, with no significant difference (p = 0.1902). A significant difference was observed between the two groups in the incidence of DGE grade C (p = 0.0426).

CONCLUSIONS

The incidence of total DGE was not reduced statistically in the STS group compared with the ETS group, but reduced DGE grade C. Side-to-side anastomosis might be associated with a reduced incidence of DGE grade C.

Superiority of stapled side-to-side gastrojejunostomy over conventional hand-sewn end-to-side gastrojejunostomy for reducing the risk of primary delayed gastric emptying after subtotal stomach-preserving pancreaticoduodenectomy

Background and purpose

Delayed gastric emptying (DGE) is the most common complication following pancreaticoduodenectomy (PD). The clinical efficacy of stapled side-to-side anastomosis using a laparoscopic stapling device during alimentary reconstruction in PD is not well understood and its superiority over conventional hand-sewn end-to-side anastomosis remains controversial. The objective of this study was to evaluate the effectiveness of the stapled side-to-side anastomosis in preventing the development of DGE after PD.

Methods

The subjects of this retrospective study were 137 patients who underwent pancreaticoduodenectomy, as subtotal stomach-preserving pancreaticoduodenectomy (SSPPD; n = 130), or conventional whipple procedure (n = 7) with Child reconstruction, between January 2010 and May 2014. The patients were divided into two groups according to whether they had had a stapled side-to-side anastomosis (SA group; n = 57) or a conventional hand-sewn end-to-side anastomosis (HA group; n = 80).

Results

SA reduced the operative time (SA vs. HA: 508 vs. 557 min, p = 0.028) and the incidence of delayed gastric emptying (SA vs. HA: 21.1 vs. 46.3%, p = 0.003) and was associated with shorter hospitalization (SA vs. HA: 33 vs. 39.5 days, p = 0.007). In this cohort, SA was the only significant factor contributing to a reduction in the incidence of DGE (p = 0.002).

Conclusions

Stapled side-to-side gastrojejunostomy reduced the operative time and the incidence of DGE following PD with Child reconstruction, thereby also reducing the length of hospitalization.