A new reconstruction method for preventing delayed gastric emptying after pylorus-preserving pancreatoduodenectomy

Risk factors for delayed gastric emptying in pancreaticoduodenectomy

The study of robotic pancreaticouodenectomy (RPD) focusing on delayed gastric emptying (DGE) is seldom reported. This study explored the incidence of DGE in RPD with extracorporeal hand-sewn gastrojejunostomy involving downward positioning of the stomach. Patients with periampullary lesions undergoing RPD or open pancreaticouodenectomy (OPD) were included for comparison. A variety of clinical factors were evaluated for the risk of developing DGE. There were 409 (68.2%) RPD and 191 (31.8%) OPD in this study. DGE occurred in 7.7% of patients after pancreaticoduodenectomy, with 4.4% in RPD and 14.7% in OPD, p < 0.001. Nausea/vomiting (12.6% vs. 6.3%) and jaundice (9.9% vs. 5.2%) were significant preoperative risk factors for DGE, while malignancy (8.7% vs. 2.2%) and lymph node involvement (9.8% vs. 5.6%) were significant pathological risk factors. Intraoperative blood loss > 200 c.c. was the other factor related to DGE (11.2% vs. 4.4% in those with blood loss ≤ 200 c.c.). None of the postoperative complications was significantly associated with DGE. Hospital stay was significantly longer in the group with DGE (median, 37 vs. 20 days in the group without DGE). After multivariate analysis by binary logistic regression, compared with OPD, RPD was the only independent factor associated with a lower incidence of DGE. RPD with extracorporeal hand-sewn antecolic, antiperistaltic, and inframesocolic gastrojejunostomy via a small umbilical wound involving careful downward positioning of the stomach was associated with a low incidence of DGE and presented as the most powerful independent predictor of this condition.

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.

Risk-Stratified Pancreatectomy Clinical Pathway Implementation and Delayed Gastric Emptying

BACKGROUND

Delayed gastric emptying (DGE) is a frequent complication after pancreaticoduodenectomy (PD) that impairs recovery and quality of life. The purpose of this study was to assess the impact risk-stratified pancreatectomy clinical pathways (RSPCPs) had on delayed gastric emptying (DGE) and identify factors associated with DGE in a contemporary period.

METHODS

A single-institution, prospective database was queried for consecutive PDs during July 2011-November 2019. Using international definitions, DGE rates were compared between periods before and after RSPCPs were implemented in 2016, classifying patients according to their postoperative pancreatic fistula (POPF) risk. Risk factors were analyzed to identify modifiable targets.

RESULTS

Among 724 elective PDs, 552 (76%) were for adenocarcinoma and 172 (24%) for other diagnoses. Of the 197 (27%) patients with DGE, 119 (16%) had type A, 41 (6%) type B, and 38 (5%) type C. In the overall cohort, DGE rates were higher with pylorus-preserving vs. classic hand-sewn reconstruction (odds ratio [OR] - 1.84; p < 0.001), postoperative abscess (OR - 2.54; p = 0.003), and non-white patients (p = 0.007), but lower after implementation of RSPCPs (OR - 0.34, p < 0.001). In the 374 patients treated with RSPCPs, only 17% (n = 65/374) developed DGE. Patients with protocol-compliant NGT removal ≤ 48 h were less likely to experience DGE (OR - 1.46, p = 0.042).

CONCLUSION

Our data suggest that implementation of preoperatively assigned RSPCPs as a care bundle was the most important factor in decreasing DGE. These gains were accentuated in patients who underwent early nasogastric tube removal and had a classic hand-sewn gastro-jejunostomy reconstruction. Application of these modifiable factors is generalizable with low implementation barriers.

Previous upper abdominal surgery is a risk factor for nasogastric tube reinsertion after pancreaticoduodenectomy

BACKGROUND

Pancreaticoduodenectomy without subsequent nasogastric tube management has not been widely adopted due to delayed gastric emptying, the specific and frequent morbidity associated with this surgical procedure. We assessed the feasibility of pancreaticoduodenectomy without use of nasogastric tubes and the risk factors for subsequent nasogastric tube reinsertion.

METHODS

We retrospectively reviewed 465 patients who underwent pancreaticoduodenectomy at a single institution between 2010 and 2019. Primary endpoint was the rate of nasogastric tube reinsertion. Logistic regression analysis was used to determine independent risk factors of nasogastric tube reinsertion and delayed gastric emptying.

RESULTS

The rate of nasogastric tube reinsertion was 10.1% (47/465). The rate of delayed gastric emptying was 9.5% (44/465). Logistic regression analysis identified 4 independent risk factors for nasogastric tube reinsertion: male sex (odds ratio = 4.42; 95% confidence interval 1.50-13.0, P = .007), comorbidity of cardiac ischemia (odds ratio = 3.04; 95% confidence interval 1.05-8.79, P = .041), preoperative cholangitis or cholecystitis (odds ratio = 2.21; 95% confidence interval 1.02-4.76, P = .044), and previous upper abdominal surgery (odds ratio = 8.34; 95% confidence interval 3.07-22.7, P < .001). Independent risk factors for delayed gastric emptying were male sex (odds ratio = 3.20; 95% confidence interval 1.11-9.21, P = .031), comorbidity of cardiac ischemia (odds ratio = 3.81; 95% confidence interval 1.34-10.8, P = .012), concomitant organ resection (odds ratio = 3.99; 95% confidence interval 1.10-14.4, P = .035), and previous upper abdominal surgery (odds ratio = 7.21; 95% confidence interval 2.68-19.4, P < .001).

CONCLUSION

Pancreaticoduodenectomy without use of nasogastric tubes is feasible, but patients with previous upper abdominal surgery require careful postoperative nasogastric tube management.

Gastrostomy as a Preemptive Measure after Pancreatoduodenectomy against Delayed Gastric Emptying: A Small Case Series and a Review of the Literature

Delayed gastric emptying (DGE) is a common (20–30%) postoperative complication following pancreatoduodenectomy (PD) (Parmar et al., 2013). Various causes and preemptive measures have been suggested to decrease the occurrence of DGE. We added a simple step in the procedure of 26 consecutive pancreatic head resections, which seems to alleviate DGE and has never been highlighted before.

The influence of the preoperative thickness of the abdominal cavity on the gastrojejunal anatomic position and delayed gastric emptying after pancreatoduodenectomy

BACKGROUND

We aimed to investigate the hypothesis that preoperative thickness of the abdominal cavity influenced on the gastrojejunostomy position and the incidence of delayed gastric emptying (DGE) after pancreatoduodenectomy.

METHODS

Between January 2009 and December 2018, consecutive patients who underwent subtotal stomach-preserving pancreatoduodenectomy were retrospectively reviewed. Thickness of the abdominal cavity at the level of the celiac axis (TACC) and umbilicus (TACU) were measured using computed tomography before surgery. The ventral deviation of the gastrojejunostomy was evaluated as the sagittal fundus anastomotic angle (SFAA) using sagittal computed tomography images taken after surgery.

RESULTS

A total of 281 patients were included. Of these, clinically relevant DGE (CR-DGE) was observed in 47 patients. TACC was significantly correlated with SFAA (R = 0.53, P < 0.001). Both TACC and SFAA were significantly greater in patients with CR-DGE compared to those without CR-DGE. In contrast, TACU was not associated with SFAA and the incidence of CR-DGE. Multivariate analysis revealed that TACC >110 mm (odds ratio, 3.07; p = 0.002) and pancreatic fistula (odds ratio, 2.71; p = 0.013) were identified as independent risk factors for CR-DGE.

CONCLUSION

Thickness of the upper abdominal cavity had a significant influence on gastrojejunal anatomic position and the development of CR-DGE after pancreatoduodenectomy.

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.

Antecolic reconstruction is associated with a lower incidence of delayed gastric emptying compared to retrocolic technique after Whipple or pylorus-preserving pancreaticoduodenectomy

BACKGROUND

The aim of present study is to investigate the relationship between the antecolic (AC) route of gastrojejunostomy (GJ) after pancreaticoduodenectomy (PD) or duodenojejunostomy (DJ) reconstruction after pylorus-preserving pancreaticoduodenectomy (PPPD), and the incidence of delayed gastric emptying (DGE).

METHODS

An electronic search of 4 databases to identify all articles comparing AC and retrocolic (RC) reconstruction after PD or PPPD was performed.

RESULTS

Fifteen studies involving 2270 patients were included for final pooled analysis. The overall incidence of DGE was 27.2%. Meta-analysis results showed AC group had lower incidence of DGE (odds ratio, 0.29; 95% confidence interval [CI], 0.16-0.52, P < .0001) and shorter hospital length of stay (weight mean difference, -3.29; 95% CI, -5.2 to -1.39, P = .0007). Days until to liquid and solid diet in the AC group were also significantly earlier than that in the RC group (P = .0006 and P < .0001). There was no difference in operative time, incidence of pancreatic fistula and bile leakage, and mortality, respectively.

CONCLUSIONS

AC route of GJ after PD or DJ after PPPD is associated with a lower incidence of DGE. However, the preferred route for GJ or DJ reconstruction remains to be investigated in well-powered, randomized, controlled trial.

Risk factors for post-pancreaticoduodenectomy delayed gastric emptying in the absence of pancreatic fistula or intra-abdominal infection

BACKGROUND AND OBJECTIVES

Delayed gastric emptying (DGE) occurs commonly following pancreaticoduodenectomy (PD), but the rate of DGE in the absence of other intra-abdominal complications is poorly understood. The objectives of this study were to define the incidence of DGE and identify risk factors for DGE in patients without pancreatic fistula or other intra-abdominal infections.

METHODS

Retrospective cohort study utilizing the American College of Surgeons National Surgical Quality Improvement Program pancreatectomy variables to identify patients with DGE following PD without evidence of fistula or intra-abdominal infection. Multivariable models were developed to assess preoperative, intraoperative, and technical factors associated with DGE.

RESULTS

The rate of DGE was 11.7% in 10502 cases without pancreatic fistula or intra-abdominal infection. Patients were more likely to develop DGE if age ≥75 (odds ratio [OR], 1.22; P = 0.003), male (OR, 1.29; P < 0.001), underwent pylorus-sparing PD (OR, 1.27; P = 0.004), or had a prolonged operative time (OR, 1.38 if greater than seven vs less than 5 hours; P = 0.005). Factors not associated with DGE included BMI, pathologic indication, and surgical approach.

CONCLUSION

The incidence of DGE after PD is notable even in patients without other abdominal complications. Identification of patients at increased risk for DGE may aid patient counseling as well as decisions regarding surgical technique, enteral feeding access, and enhanced-recovery pathways.

Retrocolic Gastrojejunostomy After Pancreaticoduodenectomy: A Satisfactory Delayed Gastric-Emptying Rate

OBJECTIVES

Delayed gastric emptying (DGE) is a critical complication after pancreaticoduodenectomy (PD). Antecolic gastrojejunostomy has long been adopted as standard procedure because it is thought to reduce DGE. However, we have used retrocolic gastrojejunostomy (retro-GJ) for more than 10 years and have not observed high DGE rates. We aimed to clarify whether our retro-GJ approach produced comparable outcomes in preventing DGE.

METHODS

A total of 211 patients who underwent pylorus-resecting PD with retro-GJ at our institution between 2005 and 2016 were retrospectively analyzed. The incidence rate of DGE and the length of postoperative hospital stay were assessed.

RESULTS

The overall incidence of DGE with our retro-GJ procedure was 13% (n = 28), and the rate of clinically relevant DGE (grade B or C based on the International Study Group of Pancreatic Surgery criteria) was 4% (n = 8). The median postoperative hospital stay was 17 days (interquartile range, 13-25 days). Major complications (Clavien-Dindo grade ≥III) occurred in 37% (n = 79) of patients and were not associated with the occurrence of clinically relevant DGE (P = 0.47).

CONCLUSIONS

Our retro-GJ approach after PD with gastrojejunostomy, which involves careful positioning at the left-sided inframesocolic point, satisfactorily prevents DGE.

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.

The International Study Group of Pancreatic Surgery definition of delayed gastric emptying and the effects of various surgical modifications on the occurrence of delayed gastric emptying after pancreatoduodenectomy

BACKGROUND

A number of definitions have been used for delayed gastric emptying (DGE) after pancreatoduodenectomy and the reported rates varied widely. The International Study Group of Pancreatic Surgery (ISGPS) definition is the current standard but it is not used universally. In this comprehensive review, we aimed to determine the acceptance rate of ISGPS definition of DGE, the incidence of DGE after pancreatoduodenectomy and the effect of various technical modifications on its incidence.

DATA SOURCE

We searched PubMed for studies regarding DGE after pancreatoduodenectomy that were published from 1 January 1980 to 1 July 2015 and extracted data on DGE definition, DGE rates and comparison of DGE rates among different technical modifications from all of the relevant articles.

RESULTS

Out of 435 search results, 178 were selected for data extraction. The ISGPS definition was used in 80% of the studies published since 2010 and the average rates of DGE and clinically relevant DGE were 27.7% (range: 0-100%; median: 18.7%) and 14.3% (range: 1.8%-58.2%; median: 13.6%), respectively. Pylorus preservation or retrocolic reconstruction were not associated with increased DGE rates. Although pyloric dilatation, Braun's entero-enterostomy and Billroth II reconstruction were associated with significantly lower DGE rates, pyloric ring resection appears to be most promising with favorable results in 7 out of 10 studies.

CONCLUSIONS

ISGPS definition of DGE has been used in majority of studies published after 2010. Clinically relevant DGE rates remain high at 14.3% despite a number of proposed surgical modifications. Pyloric ring resection seems to offer the most promising solution to reduce the occurrence of DGE.

Delayed gastric emptying following pancreatoduodenectomy with alimentary reconstruction according to Roux-en-Y or Billroth-II

Background

Delayed gastric emptying (DGE) remains the most frequent complication following pancreatoduodenectomy (PD) with published incidences as high as 61%. The present study investigates the impact of bowel reconstruction techniques on DGE following classic PD (Whipple-Kausch procedure) with pancreatogastrostomy (PG).

Methods

We included 168 consecutive patients who underwent PD with PG with either Billroth II type (BII, n = 78) or Roux-en-Y type reconstruction (ReY, n = 90) between 2004 and 2015. Excluded were patients with conventional single loop reconstruction after pylorus preserving procedures. DGE was classified according to the 2007 International Study Group of Pancreatic Surgery definition. Patients were analyzed regarding severity of DGE, morbidity and mortality, length of hospital stay and demographic factors.

Results

No difference was observed between BII and ReY regarding frequency of DGE. Overall rate for clinically relevant DGE was 30% (ReY) and 26% (BII). BII and ReY did not differ in terms of demographics, morbidity or mortality. DGE significantly prolongs ICU (four vs. two days) and hospital stay (20.5 vs. 14.5 days). Risk factors for DGE development are advanced age, retrocolic reconstruction, postoperative hemorrhage and major complications.

Conclusions

The occurrence of DGE can not be influenced by the type of alimentary reconstruction (ReY vs. BII) following classic PD with PG. Old age and major complications could be identified as important risk factors in multivariate analysis.

Trial registration

German Clinical Trials Register (DRKS) DRKS00011860. Registered 14 March 2017.

Our contrivances to diminish complications after pylorus-preserving pancreaticoduodenectomy

The objective of this study is to diminish postoperative complications after pylorus-preserving pancreaticoduodenectomy. Pylorus-preserving pancreaticoduodenectomy is still associated with major complications, especially leakage at pancreatojejunostomy and delayed gastric emptying. Traditional pylorus-preserving pancreaticoduodenectomy was performed in group A, while the novel procedure, an antecolic vertical duodenojejunostomy and internal pancreatic drainage with omental wrapping, was performed in group B (n = 40 each). We compared the following characteristics between the 2 groups: operation time, blood loss, time required before removal of nasogastric tube and resumption of food intake, length of hospital stay, and postoperative complications. The novel procedure required less time and was associated with less blood loss (both P < 0.0001). In the comparison of the 2 groups, group B showed less time for removal of nasogastric tubes and resumption of food intake, shorter hospital stays, and fewer postoperative complications (all P < 0.0001). The novel procedure appears to be a safe and effective alternative to traditional pancreaticoduodenectomy techniques.

The Standardization of Pancreatoduodenectomy: Where Are We?

Pancreaticoduodenectomy (PD) represents an important challenge for surgeons due to the complexity of the operation, requirement for technical skills and experience, and postoperative management involving important and life-threatening complications. Despite efforts to reduce mortality in high-volume centers, the morbidity rate is still high (approximately 40-50%). The PD standardization process of surgical aspects and preoperative and postoperative settings is essential to permit pancreatic surgeons to communicate in the same language, compare experiences and results, and to improve the short- and long-term outcomes. The aim of this article is to assess the state of the art practices for important matters of debate for PD (the role of mini invasive approach, the definition and the role of mesopancreas, the extent of lymphadenectomy, the different methods of reconstructions, the prophylactic drainage of the abdominal cavity), and to suggest possible future studies.

Delayed Gastric Emptying After Stapled Versus Hand-Sewn Anastomosis of Duodenojejunostomy in Pylorus-Preserving Pancreaticoduodenectomy: a Randomized Controlled trial

BACKGROUND

A retrospective analysis indicated that the incidence of delayed gastric emptying (DGE) was less after using a circular stapler (CS) for duodenojejunostomy than that after hand-sewn (HS) anastomosis in pylorus-preserving pancreaticoduodenectomy (PpPD). This randomized clinical trial compared the incidence of DGE postoperative after CS duodenojejunostomy with that of conventional HS anastomosis in PpPD.

METHODS

We randomly assigned 101 patients (age 20-80) undergoing PpPD to receive CS duodenojejunostomy (group CS, n = 50) or HS duodenojejunostomy (group HS, n = 51) in two Japanese cancer center hospitals between 2011 and 2013. The patients were stratified by institution and size of the main pancreatic duct (<3 or ≥3 mm). The primary endpoint was the incidence of grade B or C DGE according to the international definition with a non-inferiority margin of 5 %. This trial is registered with University hospital Medical Information Network (UMIN) Center: UMIN000005463.

RESULTS

Per-protocol analysis of data on 95 patients showed that grade B or C DGE was found in 4 (8.9 %) of 45 patients who underwent CS anastomosis and in 8 (16 %) of 50 patients who underwent HS anastomosis (P = 0.015). There were no differences in the overall incidence of DGE (P = 0.98), passage of the contrast medium through the anastomosis (P = 0.55), or hospital stays (P = 0.22).

CONCLUSIONS

CS duodenojejunostomy is not inferior to HS anastomosis with respect to the incidence of clinically significant DGE, justifying its use as treatment option.

Effect of antecolic or retrocolic route of gastroenteric anastomosis on delayed gastric emptying after pancreaticoduodenectomy: A meta-analysis of randomized controlled trials

BACKGROUND

Delayed gastric emptying (DGE) is one of the most troublesome complications after classical pancreaticoduodenectomy (PD) or pylorus-preserving PD. Whether the route of gastroenteric reconstruction has any influence on DGE remains controversial. The aim of this study was to investigate the influence of different types of gastroenteric anastomosis on DGE after PD/PPPD.

METHODS

A systematic search of literature databases (Cochrane Library, PubMed, EMBASE, and Web of Science) was performed to identify eligible studies. Cochrane collaboration's tool for assessing risk of bias was utilized to evaluate the quality of included studies. The primary outcome was DGE incidence rate. Further outcomes included mortality, morbidity, and other operation related events. Random-effect or fix-effect models were used as appropriate.

RESULTS

Five randomized controlled trials (RCTs) including a total of 530 patients were identified and included in the analysis. Based on these studies, no difference was found in DGE incidence between antecolic and retrocolic groups (relative risk [RR], 0.82; 95% confidence interval [CI], 0.51-1.32; P = 0.41). Mortality, morbidity, and operation related events were not significantly different between groups.

CONCLUSIONS

Results of the meta-analysis reveal that DGE occurrence is not affected by route of gastroenteric anastomosis. Anastomosis approach should be chosen according to the surgeons' preference.

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

BACKGROUND

One of the most common morbidities of pancreaticoduodenectomies is delayed gastric emptying (DGE). The recent advent of subtotal stomach-preserving pancreaticoduodenectomy (SSPPD) attempts to lessen this troublesome complication; however, the incidence of DGE still remains to be 4.5-20%. This study aims to evaluate whether the incidence of DGE can be reduced by the side-to-side gastric greater curvature-to-jejunal anastomosis in comparison with the gastric stump-to-jejunal end-to-side anastomosis in SSPPD.

METHODS

Between October 2007 and September 2012, a total of 160 consecutive patients who had undergone SSPPD were analyzed retrospectively. In the first period (October 2007-March 2010), gastrojejunostomy was performed with end-to-side anastomosis in 80 patients (SSPPD-ETS group). In the second period (April 2010-September 2012), gastrojejunostomy was performed with the greater curvature side-to-jejunal side anastomosis in 80 patients (SSPPD-STS group). The postoperative data were collected prospectively in a database and reviewed retrospectively.

RESULTS

The incidence of DGE was 21.3% in the SSPPD-ETS group and 2.5% in the SSPPD-STS group (P = 0.0002). According to the classification of the International Study Group of Pancreatic Surgery (ISGPS), the incidence of DGE of grades A, B, and C were 5, 5, and 7 in the SSPPD-ETS group and 0, 2, and 0 in the SSPPD-STS group, respectively. The overall morbidity and postoperative hospital stay of the two groups were not significantly different.

CONCLUSIONS

The greater curvature side-to-side anastomosis of gastrojejunostomy is associated with a reduced incidence of DGE after SSPPD.

[Prevention of gastrostasis after pancreaticoduodenal resection: new technique of gastroenterostomy]

It was performed a retrospective comparative analysis of treatment results of 113 patients with pancreatic head and periampular cancer. The main group consisted of 58 patients in whom pancreaticoduodenal resection was performed according to an original technique of Russian Scientific Center of Surgery. Control group included 55 patients who underwent end-to-side gastrojejunostomy reconstruction. We have analyzed immediate postoperative complications in 2 groups without taking into consideration nosological forms of the disease. Pancreaticojejunostomy failure was diagnosed postoperatively in 5 (8.6%) patients in main group and in 10 (18.2%) patients in control group. There was no hepaticoentero- and gastroenterostomy failure in patients who underwent new technique of gastrojejunostomy while these events were observed in 8 (14.5%) and 3 (5.5%) patients respectively in control group. Mortality was 1.7% (n=1) in main group and 5.5% (n=3) in control group (p=0.29). Mild degree of gastrostasis (A class) was observed in 54 (93.7%) patients of main group and in 34 (61.8%) patients of control group (p=0.0004). There was B class of gastrostasis in 4 (6.9%) patients of main group. Severe gastrostasis (C class) was not revealed in any observation. In control group B class of gastrostasis was diagnosed in 14 (25.5%) patients, severe degree - in 7 (12.7%) patients. Univariant analysis showed hemotransfusion (p=0.037), pancreatic fistula (p=0.001), enteric fistula (p=0.005) and reconstruction technique (p=0.00004) as predictors of gastrostasis. Multivariant analysis defined pancreatic fistula (p=0.01), enteric fistula (p=0.04) and reconstruction technique (p=0.001) as significant predictors of gastrostasis. Thus, our study revealed significant decreasing gastrostasis incidence in case of original technique in comparison with conventional anastomosis, as well as demonstrated effect of anastomoses failure on augmentation of gastrostasis frequency after pancreaticoduodenal resection. Further randomized investigations are necessary to confirm our results.

Effect of antecolic or retrocolic reconstruction of the gastro/duodenojejunostomy on delayed gastric emptying after pancreaticoduodenectomy: a meta-analysis

BACKGROUND

Delayed gastric emptying (DGE) is one of the most frequent complications after pancreaticoduodenectomy (PD). This meta-analysis aimed to evaluate the effect of antecolic versus retrocolic reconstruction of gastro/duodenojejunostomy on DGE after PD.

METHODS

Randomized controlled trials (RCTs) comparing antecolic versus retrocolic reconstruction of gastro/duodenojejunostomy on DGE after PD were eligible for inclusion. Pooled estimates of treatment effect were calculated using either the fixed effects model or random effects model.

RESULTS

Five RCTs involving 534 randomized patients were eligible. The comparison of DGE showed no significant difference (odds ratio, 0.66; 95% confidence interval, 0.32 to 1.33; P = 0.24). The antecolic and retrocolic groups also had comparable outcomes for clinical parameters related to DGE, other complications, hospital mortality, and length of hospital stay.

CONCLUSIONS

The route of gastro/duodenojejunostomy reconstruction has no impact on DGE after PD. Therefore, the choice of reconstruction route should be selected according to the surgeon's preference.

Meta-analysis of antecolic versus retrocolic gastric reconstruction after a pylorus-preserving pancreatoduodenectomy

INTRODUCTION

Delayed gastric emptying (DGE) is a common complication after a pylorus-preserving pancreatoduodenectomy (PPPD) and is associated with significant morbidity. This study determines whether DGE is affected by antecolic (AC) or retrocolic (RC) reconstruction after a PPPD.

METHOD

An electronic search was performed of the MEDLINE, EMBASE and PubMed databases to identify all articles related to this topic. Pooled risk ratios (RR) were calculated for categorical outcomes, and mean differences (MD) for secondary continuous outcomes using the fixed-effects and random-effects models for meta-analysis.

RESULTS

Nine studies including 878 patients met the inclusion criteria. DGE was lower with an AC reconstruction RR 0.31 [0.12, 0.78] Z = 2.47 (P = 0.010). Length of stay (LOS) MD -4 days [-7.63, -1.14] Z = 2.65 (P = 0.008) and days to commence a solid diet MD -5 days [-6.63, -3.15] Z = 5.50 (P ≤ 0.000) were also significantly in favour of the AC group. There was no difference in the incidence of pancreatic fistula, intra-abdominal collection/bile leak or mortality between the two groups.

CONCLUSION

AC reconstruction after PPPD is associated with a lower incidence of DGE. Time to oral intake was significantly shorter with AC reconstruction, with a reduced hospital stay.

Factors influencing clinically significant delayed gastric emptying after subtotal stomach-preserving pancreatoduodenectomy

BACKGROUND

Subtotal stomach-preserving pancreatoduodenectomy (SSPPD), in which the pylorus ring is resected and most of the stomach is preserved, has been performed recently in Japan. This study was undertaken to clarify the incidence of delayed gastric emptying (DGE) after SSPPD at a high-volume hospital and to determine the independent factors that influence the development of DGE after SSPPD.

METHODS

Between 2002 and 2011, 201 consecutive patients underwent standardized SSPPD. After SSPPD, DGE (defined according to the International Study Group of Pancreatic Surgery) was analyzed, and associated variables were assessed by univariate and multivariate analyses, retrospectively.

RESULTS

Clinically significant DGE (grades B and C) occurred in 35 (17 %) of the 201 patients; 26 patients had other accompanying abdominal complications (secondary DGE), and pancreatic leakage was the sole risk factor for DGE (odds ratio 6.63, 95 % CI 2.86-15.74; p < 0.001). Only nine (4 % of all patients) of the 35 patients with clinically significant DGE were classified as having DGE that had arisen without any obvious etiology (primary DGE).

CONCLUSIONS

DGE after SSPPD is strongly linked to the occurrence of other postoperative intra-abdominal complications such as pancreatic fistula. The incidence rate of primary DGE after SSPPD was 4 %. Although the ISGPS classification of DGE is clearly applicable, the grades do not explain why DGE occurs. Primary and secondary DGE should therefore be defined separately.

Impact of the reconstruction method on delayed gastric emptying after pylorus-preserving pancreaticoduodenectomy: a prospective randomized study

BACKGROUND

Delayed gastric emptying (DGE) is of considerable concern in patients undergoing pylorus-preserving pancreaticoduodenectomy (PPPD). Prolonged hospital stay, increased cost, and decreased quality of life add on to interventions needed to treat DGE. This study was conducted to determine if performing duodenojejunostomy via the antecolic rather than the retrocolic route improved incidence of DGE.

METHODS

Patients undergoing PPPD between April 2007 and November 2009 were randomized for either antecolic or retrocolic reconstruction of the duodenojejunostomy. DGE was then assessed by clinical criteria on postoperative day (POD) 10. A paracetamol absorption test was also administered with a liquid meal, and serial plasma levels of intestinal peptides were measured.

RESULTS

Overall, 64 patients were amenable for analysis: 36 in the antecolic group and 28 in the retrocolic group. The incidences of DGE on POD 10 were 17.6 and 23.1 % (antecolic vs. retrocolic, respectively) (p = 0.628). The two groups did not differ in regard to their median (interquartile range) postoperative hospital length of stay [13.0 (10.0–17.5) vs. 12.5 (11.0–17.0) days; p = 0.446], time to regular diet [5 (5–7) vs. 5 (4–6) days; p = 0.353], or morbidity (52.9 vs. 50.0 %; p = 0.777). The median length of nasogastric tube decompression was similar in the two groups [4 (3–7) vs. 3 (3–5) days; p = 0.600]. Levels of paracetamol and glucagon-like peptide-1 were markedly decreased in patients with DGE.

CONCLUSIONS

Antecolic reconstruction after PPPD does not improve the occurrence/the incidence of DGE and is similar to retrocolic reconstruction with regard to secondary outcome parameters.

Prospective randomized clinical trial of a change in gastric emptying and nutritional status after a pylorus-preserving pancreaticoduodenectomy: comparison between an antecolic and a vertical retrocolic duodenojejunostomy

BACKGROUND

Although an antecolic duodenojejunostomy was reported to reduce post-operative delayed gastric emptying (DGE) compared with a retrocolic duodenojejunostomy after a pylorus-preserving pancreaticoduodenectomy (PPPD), the long-term effects of these procedures have rarely been studied. The aim of this prospective, randomized, clinical trial was to investigate the influence of the reconstruction route on post-operative gastric emptying and nutrition.

METHODS

Reconstruction was performed in 116 patients with an antecolic duodenojejunostomy (A group, n = 58) or a vertical retrocolic duodenojejunostomy (VR group, n = 58). Post-operative complications, including DGE, gastric emptying variables assessed by (13) C-acetate breath test and nutrition, were compared between the two groups for 1 year post-operatively.

RESULTS

The incidence of DGE was not significantly different between the procedures (A group: 12.1%; VR group: 20.7%, P = 0.316). At post-operative month 1, gastric emptying was prolonged in the VR versus the A group but not significantly so. At post-operative month 6, gastric emptying was accelerated significantly in the A versus the VR group. Post-operative weight recovery was significantly better in the VR versus the A group at post-operative month 12 (percentage of pre-operative weight, A group: 93.8 ± 1.2%; VR group: 98.5 ± 1.3%, P = 0.015).

CONCLUSIONS

A vertical retrocolic duodenojejunostomy was an acceptable procedure for the lower incidence of DGE and may contribute to better weight gain affected by moderate gastric emptying.

Pancreatoduodenectomy - preventing complications

Increased awareness of periampullary & pancreatic head cancers, and the accompanying improved outcomes following pancreatoduodenectomy (PD), has possibly led to an increase in patients seeking treatment for the same. While there has definitely been a reduction in morbidity rates following PD in the last few decades, this decline has not mirrored the drastic fall in mortality. Amongst the foremost in the factors responsible for this reduction in mortality is the standardization of surgical technique and development of dedicated teams to manage all aspects of this demanding procedure. This review intends to provide the reader with an overview of major complications following this major surgery and measures to prevent them based on the authors' experience.

Complications after pancreatic resection: diagnosis, prevention and management

BACKGROUND

Although mortality after pancreaticoduodenectomy (PD) or distal pancreatectomy (DP) has decreased, morbidity still remains high. The aim of this review article is to present, define, predict, prevent, and manage the main complications after pancreatic resection (PR).

METHODS

A non-systematic literature search on morbidity and mortality after PR was undertaken using the PubMed/MEDLINE and Embase databases.

RESULTS

The main complications after PR are delayed gastric emptying (DGE), pancreatic fistula (PF), and bleeding, as defined by the International Study Group on Pancreatic Surgery. PF occurs in 10% to 15% of patients after PD and in 10% to 30% of patients after DP. The different techniques of pancreatic anastomosis and pancreatic remnant closure do not show significant advantages in the prevention of PF, nor does the perioperative use of somatostatin and its analogues. The trend is for conservative or interventional radiology therapy for PF (with enteral nutrition), which achieves a success rate of approximately 80%. DGE after PD occurs in 20% to 50% of patients. Prophylactic erythromycin may reduce the incidence of DGE. Gastric aspiration with erythromycin is usually effective in one to three weeks. Bleeding (gastrointestinal and intraabdominal) occurs in 4% to 16% of patients after PD and in 2% to 3% of patients after DP. Endovascular treatment can only be used for a haemodynamically stable patient. In cases of haemodynamic instability or associated septic complications, surgical treatment is necessary. In expert centres, the mortality rates can be less than 1% after DP and less than 3% after PD.

CONCLUSION

There is a need for improved strategies to prevent and treat complications after PR.

Pancreatic surgery: indications, complications, and implications for nutrition intervention

Pancreatic surgery is a complicated procedure leaving postoperative patients with an altered gastrointestinal (GI) anatomy and a potential for further surgical complications such as leaks and fistulas. Beyond surgical complications, these patients are prone to delayed gastric emptying, fat malabsorption, and hyperglycemia, with early satiety and poor appetite further compromising nutrition status. Many of these patients are malnourished prior to this major surgical procedure, and significant weight loss is common postoperatively. Does this affect their outcome? There seems to be a lack of consensus in this patient population regarding how to optimize nutrition and limit potential deleterious effects of this surgery. It is important to first understand the underlying disease condition and the effects to the gland, different forms of surgery with subsequent GI alterations, and common surgical and digestive complications. Once this is reviewed, existing nutrition support literature will be explored in attempts to determine the best nutrition management in this patient population.

[Gastroenteric reconstruction route after pancreaticoduodenectomy: antecolic versus retrocolic]

INTRODUCTION

Delayed gastric emptying (DGE) is a relatively common complication after cephalic pancreaticoduodenectomy (CPD). Its origin is not very clear, and it is believed that its appearance is due to multiple factors (hormones, appearance of other complications, particularly pancreatic fistulas, and the surgical technique). Among the technical aspects associated with DGE, it has been proposed that the route of gastroenteric reconstruction (antecolic or retrocolic) could have an effect on its incidence.

MATERIAL AND METHODS

A systemic review was made of the literature, searching for articles that compared both reconstruction routes after CPD, finding only 11 articles: 4 randomised clinical trials, one prospective study, and 6 retrospective studies. A meta-analysis could not be performed on them, due to the large methodological differences between them.

RESULTS

In the 4 randomised studies, 2 were in favour of the antecolic route, and 2 did not observe any differences between either of them. The antecolic route obtained a much lower DGE rate than the retrocolic one in the only prospective study. In 4 of the retrospective studies the antecolic route obtained a very low rate. The results of both routes were similar in another 2 retrospective studies, with the retrocolic route slightly better in one of them.

CONCLUSIONS

Using the published literature, the gastric reconstruction route associated with less DGE after CPD cannot currently be determined.

Clinical risk factors of delayed gastric emptying in patients after pancreaticoduodenectomy: a systematic review and meta-analysis

BACKGROUND

The clinical risk factors of delayed gastric emptying (DGE) in patients after pancreaticoduodenectomy (PD) remains controversial. Herein, we conducted a systematic review to quantify the associations between clinical risk factors and DGE in patients after conventional PD or pylorus preserving pancreaticoduodenectomy (PPPD).

METHODS

A systematic search of electronic databases (PubMed, EMBASE, OVID, Web of Science, The Cochrane Library) for studies published from 1970 to 2012 was performed. Cohort, case-control studies, and randomized controlled trials that examined clinical risk factors of DGE were included.

RESULTS

Eighteen studies met final inclusion criteria (total n = 3579). From the pooled analyses, preoperative diabetes (OR 1.49, 95% CI, 1.03-2.17), pancreatic fistulas (OR 2.66, 95% CI, 1.65-4.28), and postoperative complications (OR 4.71, 95% CI, 2.61-8.50) were significantly associated with increased risk of DGE; while patients with preoperative biliary drainage (OR 0.68, 95% CI, 0.48-0.97) and antecolic reconstruction (OR 0.17, 95% CI, 0.07-0.41) had decreased risk of DGE development. Gender, malignant pathology, preoperative jaundice, intra-operative transfusion, PD vs. PPPD and early enteral feeding were not significantly associated with DGE development (all P > 0.05).

CONCLUSIONS

Our findings demonstrate that preoperative diabetes, pancreatic fistulas, and postoperative complications were clinical risk factors predictive for DGE. Antecolic reconstruction and preoperative biliary drainage result in a reduction in DGE. Knowledge of these risk factors may assist in identification and appropriate referral of patients at risk of DGE.

Management and prevention of delayed gastric emptying after pancreaticoduodenectomy

Although technical advances have been made in pancreaticoduodenectomy, the incidence of delayed gastric emptying (DGE) is reported as being high. Postoperative DGE is not fatal, but often results in prolonging the length of patients' stay in hospital, increasing their medical expenses, and further lowering their quality of life. DGE is a complex process caused by disorder and incoordination of various factors in charge of gastric mobility, such as smooth muscle cells (myogenic), enteric neuron (hormonal), and autonomic nervous system (neural). DGE often occurs after operative maneuvers that cause the loss of organs responsible for gastric motility and emptying or kinetic muscular or neuromuscular ischemia. To prevent DGE, it is most important to develop and universalize a standardized surgical technique in a way to reduce factors that are considered to cause DGE after pancreaticoduodenectomy. Moreover, if it is suspected that DGE occurred after pancreaticoduodenectomy, a differential diagnosis from diseases with similar symptoms via an accurate diagnostic approach should be implemented.

Delayed gastric emptying improved by straight stomach reconstruction with twisted anastomosis to the jejunum after pylorus-preserving pancreaticoduodenectomy (PPPD) in 118 consecutive patients at a single institution

PURPOSE

Delayed gastric emptying (DGE) is a leading cause of complication after pylorus-preserving pancreaticoduodenectomy (PPPD). Its incidence has been reported to range from 5 to 57%. We describe a modified reconstruction method, which resulted in a low rate of DGE.

METHODS

Between April 2003 and March 2008, we performed PPPD and reconstruction using an antecolic method in 118 consecutive patients. After PPPD, reconstruction was done using conventional Child procedure in 12 patients (PPPD group) and with the following modifications in the remaining 106 patients (PPPDR group): duodenojejunostomy was performed using the straight method and the jejunum was anastomosed with a 30° counterclockwise twist. We evaluated the incidence of DGE based on the grading system defined by the International Study Group of Pancreatic Surgery (ISGPS).

RESULTS

The PPPDR group had a lower incidence of DGE than the PPPD group (PPPD), occurring in 7 patients (7%) versus 4 patients (33%), respectively. However, the overall morbidity rates and postoperative hospital stays of the two groups did not differ significantly.

CONCLUSIONS

Straight stomach reconstruction with a twisted anastomosis could reduce the incidence of DGE after PPPD reconstruction.

Analysis of risk factors for delayed gastric emptying (DGE) after 387 pancreaticoduodenectomies with usage of 70 stapled reconstructions

BACKGROUND

Delayed gastric emptying (DGE) is one of the most troublesome complications after pancreaticoduodenectomy (PD).

METHODS

Between 2004 and 2009, 387 patients underwent PD and of these, 302 patients (78%) underwent pylorus-preserving PD. The stapled reconstruction of duodeno- or gastrojejunostomy was introduced in 2006, and 70 patients (18%) underwent stapled Roux-en-Y reconstruction. Postoperative DGE was defined based on the International Study Group on Pancreatic Surgery classification, and grade B or C DGE was considered to be clinically relevant. Risk factors for DGE were evaluated using univariate and multivariate analyses.

RESULTS

Four patients died in the hospital (1.0%). Postoperative DGE was found in 70 patients (18%). DGE was less frequently seen in stapled reconstruction than in hand-sewn reconstruction (7.2% vs. 21%, P < 0.001), and in single-layer anastomosis than in double-layer anastomosis (12% vs. 24%, P = 0.02). The multivariate logistic regression analysis revealed that the independent risk factors for DGE were postoperative pancreatic fistula (risk ratio [RR] 2.4, P = 0.002), hand-sewn reconstruction (RR 2.9, P = 0.03) and male (RR 2.2, P = 0.02).

CONCLUSION

The method of alimentary reconstruction affected the occurrence of DGE. The incidence of DGE was less in stapled reconstruction than in hand-sewn reconstruction.

Effect of antecolic or retrocolic reconstruction of the gastro/duodenojejunostomy on delayed gastric emptying after pancreaticoduodenectomy: a randomized controlled trial

OBJECTIVE

To study the effect of antecolic vs. retrocolic reconstruction on delayed gastric emptying (DGE) after pancreaticoduodenectomy (PD) and to analyze factors which may be associated with post-PD DGE. DGE is a troublesome complication occurring in 30-40% of patients undergoing PD leading to increased postoperative morbidity. Many factors have been implicated in the pathogenesis of DGE. Among the various methods employed to reduce the incidence, recent reports have suggested that an antecolic reconstruction of gastro/duodenojejunostomy may decrease the incidence of DGE.

METHODS

Between Sep 2006 and Nov 2008, 95 patients requiring PD (for both malignant and benign conditions) were eligible for the study. Of these, 72 patients finally underwent a PD and were randomized to either a retrocolic or antecolic reconstruction of the gastro/duodenojejunostomy. All patients underwent the standard Whipple's or a pylorus preserving pancreaticoduodenectomy (PPPD), and the randomization was stratified according to the type of PD done. DGE was assessed clinically using the Johns Hopkins criteria (Yeo et al. in Ann Surg 218: 229-37, 1993). In patients suspected to have DGE, mechanical causes were excluded by imaging and/or endoscopy. Occurrence of DGE was the primary endpoint, whereas duration of hospital stay and occurrence of intra-abdominal complications were the secondary end points.

RESULTS

The antecolic and retrocolic groups were comparable with regard to patient demographics, diagnosis, and other preoperative, intraoperative, and postoperative factors. Overall, DGE occurred in 21 patients (30.9%). There was no significant difference in the incidence of DGE in the antecolic vs. the retrocolic group (34.4% vs. 27.8%; p = 0.6). On univariate analysis, older age, use of octreotide, and intra-abdominal complications were significantly associated with the occurrence of DGE; however, on a multivariate analysis, only age was found to be significant (p = 0.02). The mean postoperative stay was longer among patients who developed DGE (21.9 ± 9.3 days vs. 13 ± 6.9 days; p = 0.0001).

CONCLUSIONS

Delayed gastric emptying is a cause of significant morbidity and prolongs the duration of hospitalization following pancreaticoduodenectomy. The incidence of DGE does not appear to be related to the method of reconstruction (antecolic or retrocolic). Older age may be a risk factor for its occurrence.

Analysis of clinical trials evaluating complications after pancreaticoduodenectomy: a new era of pancreatic surgery

Pancreatic fistula and delayed gastric emptying (DGE) are the major postoperative complications of pancreaticoduodenectomy (PD). Pancreatic fistula is life-threatening and DGE, while not life-threatening, prolongs the hospital stay, increasing costs and compromising quality of life. To establish the current consensus of pancreatic fistula and DGE after PD, we analyzed the results of randomized controlled trials (RCTs) designed to prevent these postoperative complications. Five RCTs comparing PD with pylorus-preserving pancreaticoduodenectomy (PpPD) performed for periampullary tumors showed that the two procedures were equally effective with respect to morbidity, mortality, and survival. We reviewed 15 RCTs, 2 prospective nonrandomized studies, and 2 meta-analyses of operative techniques and postoperative management designed to prevent pancreatic fistula. The results of the RCTs designed to prevent pancreatic fistula recommended duct-to-mucosa pancreaticojejunostomy or one-layer end-to-side pancreaticojejunostomy, equally. We also reviewed five RCTs of operative techniques and postoperative management designed to prevent DGE, which revealed that the antecolic route for duodenojejunostomy significantly reduced the incidence of DGE. Further RCTs to study innovative approaches to prevent postoperative complications after PD are warranted.

Pylorus preserving pancreaticoduodenectomy for peri-ampullary carcinoma, is it a good option?

Pancreaticoduodenectomy (PD) is the standard surgical treatment for resectable peri-ampullary tumors. It can be performed with or without pylorus preservation. Many surgeons have a negative opinion of pylorus preserving PD (PPPD) and consider it an inferior operation, especially from an oncological point of view. This article reviews the various aspects of PD in the context of operative factors like blood loss and operation time, complications such as delayed gastric emptying and anastomotic leaks, and the impact on quality of life and survival. We aim to show that PPPD is at least as good as classic PD, if not better in some aspects.

A reduction in delayed gastric emptying by classic pancreaticoduodenectomy with an antecolic gastrojejunal anastomosis and a retrogastric omental patch

BACKGROUND

Delayed gastric emptying (DGE) continues to be a major cause of morbidity following pancreaticoduodenectomy (PD). A change in the method of reconstruction following PD was instituted in an attempt to reduce the incidence DGE.

METHODS

Patients undergoing PD from January 2002 to December 2008 were reviewed and outcomes determined. Pylorus-preserving pancreaticoduodenectomy (PPPD) with a retrocolic duodenojejunal anastomosis (n = 79) or a classic PD with a retrocolic gastrojejunostomy (n = 36) was performed prior to January 2008. Thereafter, a classic PD with an antecolic gastrojejunal anastomosis and placement of a retrogastric vascular omental patch was undertaken (n = 36).

RESULTS

A statistically significant decrease in DGE was noted in the antecolic group compared to the entire retrocolic group (14% vs 40%; p = 0.004) and compared to patients treated by classic PD with a retrocolic anastomosis alone (14% vs 39%; p = 0.016). On multivariate analysis, the only modifiable factor associated with reduced DGE was the antecolic technique with an omental patch, odds ratio (OR) 0.3 (confidence interval (CI) 0.1-0.8) p = 0.022. Male gender was associated with an increased risk of DGE with OR 2.3 (CI 1.1-4.8) p = 0.026.

CONCLUSION

A classic PD combined with an antecolic anastomosis and retrogastric vascular omental patch results in a significant reduction in DGE.

Improvement of glucose metabolism after a pancreatoduodenectomy

OBJECTIVES

The aim of this study was to investigate the mechanisms of the change in glucose metabolism after a pancreatoduodenectomy (PD).

METHODS

Oral glucose tolerance tests were performed in 17 patients before and 1 month after a PD. The changes in plasma glucose and insulin concentrations, homeostasis model of insulin resistance, and insulinogenic index (beta-cell function) were analyzed. Two additional factors, gastric emptying function and plasma glucagon-like peptide-1 (GLP-1) concentration, that possibly affect perioperative glucose metabolism were also assessed.

RESULTS

The plasma glucose and insulin concentrations were significantly lower after the operation, especially in preoperative diabetic patients. beta-Cell function did not change after the operation. On the other hand, insulin resistance became normal 1 month after the operation. The value of gastric emptying function after the operation was not statistically different in comparison with that before the operation. Postoperative plasma GLP-1 concentration was significantly higher than the preoperative value.

CONCLUSIONS

beta-Cell function is maintained after a PD, whereas the improvement of insulin resistance may cause a short-term transient improvement of the glucose metabolism after the operation. The significance of increased postoperative GLP-1 concentration remains an unsolved issue.

Reconsideration of postoperative oral intake tolerance after pancreaticoduodenectomy: prospective consecutive analysis of delayed gastric emptying according to the ISGPS definition and the amount of dietary intake

OBJECTIVE

A prospective consecutive study was planned to evaluate the postpancreaticoduodenectomy (PD) oral intake tolerance. The occurrence of delayed gastric emptying (DGE), as defined by the International Study Group of Pancreatic Surgery (ISGPS), and the amount of dietary intake were analyzed. The risk factors for low oral intake tolerance were additionally determined.

SUMMARY BACKGROUND DATA

The causation of DGE after PD is still unclear. Several possible factors have been discussed, such as reconstruction methods and other complications. However, none of them has followed the definition of ISGPS.

METHODS

Between 2003 and 2007, 101 consecutive patients underwent PD-related surgery, and standard operative procedure was performed on 85 patients. Perioperative data were prospectively collected in all patients, and the patient's postoperative dietary intake was recorded for all meals until discharge. As an indicator of early postoperative oral intake tolerance, we added up the dietary intake from postoperative day 1 to 21 and called this value the total amount of dietary intake (TDI). The postoperative outcomes were compared between non-DGE and DGE. The high-low of TDI values was also analyzed. Multivariate analysis for factors associated with the occurrence of DGE and TDI was performed.

RESULTS

The occurrence of DGE as defined by ISGPS was 42%. The postoperative outcomes of DGE patients were significantly poor compared with those of non-DGE patients. TDI values were significantly low in DGE patients, and non-DGE patients with low TDI values showed a significantly extended duration of parenteral nutrition and postoperative hospitalization. Operative bleeding (>1,000 mL) and pancreatic fistulas were likely to be associated with DGE occurrence. Gender (women), BMI (>25 kg/m), postoperative intraabdominal infection, and DGE were significantly associated with low TDI values.

CONCLUSIONS

The ISGPS definition of DGE seemed feasible for patient management. TDI values provided additional information for analyzing postoperative oral intake tolerance, especially when describing the differences among non-DGE patients. Substantial risk factors for low oral intake tolerance were high BMI, postoperative intraabdominal infection, and DGE.

Improvement of early delayed gastric emptying in patients with Billroth I type of reconstruction after pylorus preserving pancreatoduodenectomy

BACKGROUND

Early delayed gastric emptying (DGE) is the most common complication after pylorus-preserving pancreatoduodenectomy (PpPD). Recently, a vertical antecolic reconstruction for duodenojejunostomy was recommended to decrease the incidence of early DGE in patients with Billroth II-type reconstruction after PpPD. However, Billroth I-type reconstruction (B-I) after PpPD is still favored in Japan.

METHODS

Twelve consecutive patients with B-I were prospectively enrolled. Our technique includes an end-to-side duodenojejunostomy and alignment of the stomach contours with fixation of the greater omentum to the abdominal wall in order to promote passage from the stomach through the jejunal loop. DGE was evaluated according to the consensus definition of the International Study Group of Pancreatic Surgery (ISGPS).

RESULTS

DGE was absent, with the nasogastric tube removed within 3 days in all patients. Mean duration of nasogastric tube placement was 1.5 +/- 0.4 days. Mean maximum suction volume was 85 +/- 32 ml/day.

CONCLUSION

Preliminary results were encouraging simply with relief of the outflow disturbance around the duodenojejunostomy in patients with B-I after PpPD. These findings warrant further prospective randomized trials at either multiple or high-volume centers.