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1.

Background:

Roux-en-Y gastric bypass (RYGBP) is the most common procedure for weight loss surgery but has multiple complications. This study evaluates the use of reinforced circular staplers (RCS) and their effects on reducing gastrojejunal anastomotic complications.

Methods:

We conducted a retrospective chart review from January 2007 to November 2008. Laparoscopic RYGBP were performed in 287 patients. A comparison was made of the complications with and without the use of reinforced circular staplers. The comparison was between a nonreinforced circular stapler (NRCS) group comprising 182 patients and an RCS group comprising 105 patients.

Results:

Complications at gastrojejunal anastomosis were experienced by 15.3% of the patients; 9.5% were in the RCS group and 18.7% were in the NRCS group (P=0.026). Neither group had anastomotic leaks. Bleeding rate was 4.8% in the RCS group vs. 6.6% in the NRCS group. Ulcers occurred in 2.9% of the RCS group vs. 6.0% of the NRCS group. Stricture rate was 1.9% in the RCS group vs. 6.6% in the NRCS group.

Conclusion:

The application of RCS reduced the incidence of gastrojejunal anastomotic complications. Patients are twice as likely to develop complications when no RCS device is used (95% CI 1.03, 4.623). Therefore, it is beneficial to utilize RCS for the gastrojejunal anastomosis in RYGBP procedures.  相似文献   

2.

Objectives:

We present a randomized controlled trial of laparoscopic gastric bypass comparing 2 techniques of gastrojejunostomy in patients with morbid obesity.

Methods:

Eighty consecutive patients underwent laparoscopic Roux-en-Y gastric bypass between September 2005 and August 2006. Patients were randomly assigned to 2 groups by the use of sealed envelopes. In group A, the gastrojejunal anastomosis was performed with a 21-mm circular-stapler, and in group B, this anastomosis was performed with a 45-mm linear-stapler. The rest of the procedure was identical in both groups. Variables evaluated were complications involving the gastrojejunostomy, operative time, length of stay, and percentage of excess weight loss.

Results:

Both groups were similar in age and body mass index. No patients experienced leakage or gastrojejunal anastomosis fistula, but group A patients had a more frequent stricture rate (P<0.05). Operative time and hospital stay were comparable in both groups (P>0.05). Percentage excess weight loss at one year following surgery was satisfactory in both groups, without a statistically significant difference (P>0.05).

Conclusion:

Gastrojejunal anastomosis does not seem to be a critical factor in excess weight loss for morbidly obese patients who underwent laparoscopic gastric bypass. The 2 techniques used in this experience are safe and effective; however, the 45-mm liner-stapler is preferable because it has a lower stricture rate.  相似文献   

3.

Background and Objectives:

Laparoscopic gastrojejunostomy (LGJ) has been proposed as the technique preferred over open gastrojejunostomy for relieving gastric outlet obstruction (GOO) due to malignant and benign disease. This study investigates the feasibility and safety of LGJ for GOO.

Methods:

A retrospective review was performed of patients who underwent LGJ at Mount Sinai Medical Center from 2004 to 2008. Patient''s operative course and long-term outcomes were collected.

Results:

Twenty-eight patients were reviewed (16 had malignancy, 7 had PUD, 3 had Crohn''s disease, and one had obstruction of unclear cause). Average operative time was 170 minutes, and estimated blood loss was 80cc. One case was converted to open; another had stapler misfiring. Patients regained bowel function at a median of 3 days and remained in the hospital for a median of 8 days. There were 4 major postoperative complications (14%): 1 anastomotic leak and 1 trocar-site hemorrhage requiring reoperation and 2 gastrointestinal bleeds requiring endoscopic intervention. There were 5 minor complications (18%), including a partial small bowel obstruction, 1 patient developed bacteremia, and 3 patients had delayed gastric emptying. One patient had persistent GOO requiring reoperation 3 months later.

Conclusion:

LGJ can be performed for GOO with improved outcome and an acceptable complication rate compared to the open GJ reported in the literature.  相似文献   

4.

Objective:

To compare laparoscopic anterior discoid resection (ADR) with low anterior resection (LAR).

Methods:

This is a retrospective review of a cohort (Canadian Task Force classification II-2) of patients undergoing laparoscopic ADR or LAR at a university hospital. Chart review and telephone questionnaires were conducted to examine long-term outcomes. Preoperative and operative findings, short- and long-term outcomes were compared. SF-12 quality of life scores, need for further interventions, and overall satisfaction were also compared.

Results:

Twenty-two patients underwent laparoscopic ADR (n=8) or LAR (n=14) for rectosigmoid endometriosis between January 2001 and December 2009. Mean follow-up time was 41.26 months (range, 14 to 70). Patients undergoing laparoscopic ADR had significantly less blood loss and shorter operative time and hospital stay. Patients who required LAR had a significantly higher rate of mucosal involvement (61.5% v. 0%). No statistically significant difference was found in the size, depth of invasion, location of lesions, or operative complications. Fifty percent of the LAR group had several lesions as opposed to 12.5% of the ADR group. Median age was significantly higher in patients who required LAR (39) than in patients who required ADR (32). Three patients in the LAR group (21.4%) had anastomotic strictures; 2 required dilation. The ADR group had consistently higher increments of improvement in bowel symptoms and dyspareunia. Overall satisfaction rate with the procedures was 93.3%. SF-12 scores were comparable between the 2 groups.

Conclusion:

ADR compared with LAR is associated with decreased operative time, blood loss, and hospital stay and a lower rate of anastomotic strictures. Other outcomes and satisfaction rates are comparable between the 2 procedures.  相似文献   

5.

Background:

The use of robotic assistance in adult genitourinary surgery has been successful in many operations, leading surgeons to test its use in other applications as well.

Methods:

Based on our use during prostatectomy, we have applied robotic surgery to complex distal ureteral surgeries since 2004 with successful outcomes.

Results:

A series of 11 patients who underwent robot-assisted laparoscopic distal ureteral surgery is presented. These surgeries include distal ureterectomy for ureteral cancer with reimplantation, as well as reimplantation with and without Boari flap or psoas hitch for benign conditions.

Conclusions:

Robot-assisted laparoscopic surgery can be successfully applied to patients requiring distal ureteral surgery. Maintenance of the principles of open surgery is paramount.  相似文献   

6.

Objective:

We assessed the optimal time interval between endoscopic stenting and subsequent surgery in patients with obstructive left-sided colon cancer.

Methods:

We reviewed the medical records of patients who underwent endoscopic colonic stenting for obstructive left-sided colon cancer between January 2009 and January 2012. Patients who had successful endoscopic intervention as a bridge to surgery were included in the study. Other variables studied were the duration between endoscopic stenting and surgery, the reobstruction rate, the stoma creation rate, the anastomotic leak rate, and the in-hospital mortality rate.

Results:

The medical records of 53 patients who underwent endoscopic stenting for obstructive left-sided colon cancer were reviewed, and 43 were included in the study. The median duration between endoscopic stenting and surgery was 7 days (range, 5–33).

Conclusion:

A median duration of 7 to 9 days after endoscopic stenting in patients with obstructive left-sided colon cancer is enough time to subsequently perform a safe surgical procedure. Extending this duration may expose the patient to the risk of reobstruction and emergency surgery.  相似文献   

7.

Introduction

Intrathoracic anastomotic leakage following oesophagectomy is a crushing condition. Until recently, surgical re-exploration was the preferred way of dealing with this life threatening complication. However, mortality remained significant. We therefore adopted endoscopic stent implantation as the primary treatment option. The aim of this study was to investigate the feasibility and results of endoscopic stent implantation as well as potential hazards and pitfalls.

Methods

Between January 2004 and December 2011, 292 consecutive patients who underwent an oesophagectomy at a single high volume centre dedicated to oesophageal surgery were included in this retrospective study. Overall, 38 cases with anastomotic leakage were identified and analysed.

Results

A total of 22 patients received endoscopic stent implantation as primary treatment whereas a rethoracotomy was mandatory in 15 cases. There were no significant differences in age, frequency of neoadjuvant therapy or ASA grade between cases with and without a leak. However, patients with a leak were five times more likely to have a fatal outcome (odds ratio: 5.10, 95% confidence interval: 2.06–12.33, p<0.001). Stent migration occurred but endoscopic reintervention was feasible. In 17 patients (77%) definite closure and healing of the leak was achieved, and the stent was removed subsequently. Two patients died owing to severe sepsis despite sufficient stent placement. Moreover, stent related aortic erosion with consecutive fatal haemorrhage occurred in three cases.

Conclusions

Stent implantation for intrathoracic oesophageal anastomotic leaks is feasible and compares favourably with surgical re-exploration. It is an easily available, minimally invasive procedure that may reduce leak related mortality. However, it puts the already well-known risk of stent-related vascular erosion on the spot. Awareness of this life threatening complication is therefore mandatory.  相似文献   

8.

Background:

Laparoscopy to repair iatrogenic colonoscopic perforation of the colon has proven to be a safe, effective, and reproducible means to treat these potentially devastating emergencies. The use of the laparoscope provides exceptional diagnostic yield, and under the hand of a trained surgeon, produces excellent therapeutic results while minimizing recovery time for the patient.

Methods:

We report the case of an 86-year-old man who underwent emergent laparoscopic repair of a postoperative anastomotic leak following sigmoid colectomy.

Results:

The patient underwent laparoscopic oversewing of a colonic anastomotic leak, omental patch, and diverting loop ileostomy. The patient recovered fully from his emergency procedure without any further complications.

Conclusion:

Laparoscopic surgery can be extended to a wider variety of colorectal emergencies in a carefully selected group of patients, including the elderly.  相似文献   

9.

Background

The only effective treatment for patients with morbid obesity is surgery. Laparoscopic bariatric surgery has become quite popular in attempts to decrease the morbidity associated with laparotomy. The aim of this study was to assess the safety and efficiency by using SurgASSIST® for performing the gastrojejunostomy in laparoscopic Roux-en-Y gastric bypass (RYGBP). The variables were compared with the results using the standard laparoscopic circular end-to-end anastomotic stapler (CEEA®).

Methods

After randomization, the gastro-jejuostomy of RYGBP was performed in ten patients by transabdominal introduced circular stapler (group A) and in ten patients by transorally introduced circular stapler (SurgASSIST®; group B) via five-port laparoscopy. A prospective 12-month postoperative follow-up including documentation of minor and major complication as well as weight loss and body composition is done every 8 weeks.

Results

The average body mass index (BMI, 52 kg/m2) and the other baseline characteristics were equally distributed in both groups. There was no difference in reduction of BMI, excess weight loss, and fat mass in both groups. The rate of port site wound infection in group A was significantly higher (p?=?0.03) when compared to group B. There was no anastomotic leak or stricture postoperatively in both groups.

Conclusions

Performing of a gastrojejunostomy in RYGBP by SurgASSIST is a safe and feasible method in comparison to conventional circular stapler systems. The advantage of SurgASSIST is the avoidance to introduce the stapler through the abdominal wall and, by this, a possible port site wound infection. Further prospective studies have to be performed to verify the advantages of the SurgASSIST in comparison to conventional circular stapler systems.  相似文献   

10.

Background:

Laparoscopic suturing is a difficult skill to master but can be acquired with extensive training outside the operating room. This study was done with the primary aim of assessing whether prior exposure to laparoscopic surgery helped trainees in acquiring laparoscopic suturing skills more quickly than trainees with no prior exposure to laparoscopic surgery.

Materials and Methods:

Twenty laparoscopy-exposed and 20 laparoscopy-naïve surgeons performed 5 laparoscopic gastrojejunostomies each on a phantom porcine model. The performance was evaluated for operation time, overall anastomotic score (calculated by adding scores of anastomotic leak, size of the anastomosis, suture placement, and mucosal approximation), and the level of difficulty. The performance at the beginning of training (baseline) was compared to the performance at the end of training.

Results:

All participants showed statistically significant improvement in operation time, overall anastomotic score, and difficulty level. Laparoscopy-exposed surgeons had a significantly better operation time than laparoscopy-naïve surgeons at the beginning of training; however, the difference became insignificant by the end of training. The difference in overall anastomotic score was not significant between laparoscopy-exposed and naïve-surgeons. Laparoscopy-exposed surgeons showed significant improvements in anastomotic leak rate and size of the anastomosis, whereas laparoscopy naïve surgeons showed improvements in all the parameters, although these were not significant statistically.

Conclusion:

Training improves the laparoscopic suturing skills of laparoscopy-exposed as well as laparoscopy-naïve surgeons. Prior experience in laparoscopic surgery does not seem to influence the acquisition of laparoscopic suturing skills as laparoscopic-naïve surgeons manage to catch up with the skills of the laparoscopy-exposed surgeons.  相似文献   

11.

Background and Objectives:

Single-incision laparoscopic surgery is gaining popularity among minimally invasive surgeons and is now being applied to a broad number of surgical procedures. Although this technique uses only 1 port, the diameter of the incision is larger than in standard laparoscopic surgery. The long-term incidence of port-site hernias after single-incision laparoscopic surgery has yet to be determined.

Methods:

All patients who underwent a single-incision laparoscopic surgical procedure from May 2008 through May 2009 were included in the study. Single-incision laparoscopic surgical operations were performed either by a multiport technique or with a 3-trocar single-incision laparoscopic surgery port. The patients were seen at 30 to 36 months'' follow-up, at which time they were examined for any evidence of port-site incisional hernia. Patients found to have hernias on clinical examination underwent repairs with mesh.

Results:

A total of 211 patients met the criteria for inclusion in the study. The types of operations included were cholecystectomy, appendectomy, sleeve gastrectomy, gastric banding, Nissen fundoplication, colectomy, and gastrojejunostomy. We found a port-site hernia rate of 2.9% at 30 to 36 months'' follow-up.

Conclusion:

Port-site incisional hernia after single-incision laparoscopic surgical procedures remains a major setback for patients. The true incidence remains largely unknown because most patients are asymptomatic and therefore do not seek surgical aid.  相似文献   

12.

Objective:

To explore the feasibility, safety, efficacy, and cosmetic outcomes of transvaginal endoscopic salpingectomy for tubal ectopic pregnancy.

Methods:

From May 2009 to May 2012, we prospectively enrolled 40 patients, each of whom had been scheduled for a salpingectomy because of a tubal ectopic pregnancy, and randomized them into two groups: transvaginal endoscopic surgery and laparoscopic approach. We recorded the estimated blood loss, time of anal exhaust, postoperative pain score, length of stay, and scar assessment scale associated with transvaginal endoscopic access (n = 18) (natural orifice transluminal endoscopic surgery) and laparoscopic salpingectomy (n = 20) (control group) for tubal ectopic pregnancy. The transvaginal salpingectomy was performed with a double-channel endoscope through a vaginal puncture. A single surgeon performed the surgical procedures in patients in both groups.

Results:

The group that underwent the transvaginal endoscopic procedure reported lesser pain at all postoperative visits than the group that underwent the laparoscopic approach. The duration of time for transvaginal endoscopic surgery was slightly longer than that for the laparoscopic approach. However, there was no statistically significant difference between the two groups in the duration of operative time. The group that underwent transvaginal endoscopic surgery was more satisfied with the absence of an external scar than the group that underwent the laparoscopic procedure, which left a scar. The estimated blood loss, time of anal exhaust, and length of stay were the same in both groups.

Conclusion:

The safety and efficacy of transvaginal endoscopic salpingectomy for tubal ectopic pregnancy are equivalent to those of the laparoscopic procedure. Lesser postoperative pain and a more satisfactory cosmetic outcome were found with the transvaginal endoscopic procedure, making it the more preferred method and superior to the laparoscopic approach.  相似文献   

13.

Background and Objectives:

As the number of bariatric operations performed increases, the number of patients requiring reoperation for failed weight loss is expected to proportionately increase. Natural orifice surgery is an alternative approach to revisional gastric bypass surgery when postoperative complications, such as dilatation of the gastrojejunostomy, gastrogastric fistula, and gastric pouch, dilation occur.

Methods:

The present article reports on the safe and successful use of an endoscopic tissue plicating device in a patient found to have a dilated gastric pouch and a gastrogastric fistula 12 years after an open, nondivided RYGB.

Results:

The procedure was performed without complications and resulted in a reduced pouch size to approximately 30cc to 50cc and redirection of the flow of gastric contents through her gastrojejunostomy. The patient''s early satiety returned and, 1 year postoperatively, she had incurred a 45-pound weight loss.

Discussion:

The morbidity and mortality of revision gastric bypass was avoided while the patient''s goal of moderate weight loss was achieved. Tissue plicating devices offer an alternative for repair of some postbariatric complications. With the rapid advances in endoluminal technology and increasing experience with natural orifice surgery, the ability to successfully address surgical problems through less invasive means will continue to improve.  相似文献   

14.

Background and Objectives:

An experimental study was undertaken to evaluate whether a previously described technique for laparoscopic sigmoid resection with intracorporeal resection-anastomosis and specimen removal via a suprapubic incision could be facilitated and applied to the rectum.

Methods:

Ten domestic pigs (median weight 41 kg) underwent low anterior resection of the rectum, which was transected with an articulating endoscopic stapler. Pursestring sutures were fashioned intracorporeally with a laparoscopic pursestring clamp. The anvil of a circular stapler was inserted through a 33 mm port into the colon and pursestring tied intracorporeally. A circular gun with a spike fixed to its shaft was introduced per anum and a double-stapled anastomosis performed.

Results:

Complete doughnuts were obtained in all cases and anastomoses were all methylene blue tight. All porcine subjects had an uneventful 5-week postoperative course. The median anastomotic level from the anal verge was 5.2 cm. Histology of colorectal anastomoses revealed healing mucosa.

Conclusions:

The use of articulating endoscopic stapler, laparoscopic pursestring clamp, and circular stapler with a spike fixed to its shaft seems to facilitate a previously described intracorporeal approach to sigmoid resection which was safely applied to the rectum in a porcine model.  相似文献   

15.

Background:

During laparoscopic right hemicolectomy, the anastomosis can be created intra- or extracorporeally. This study aimed to determine whether a difference exists in short-term outcomes between these techniques.

Methods:

Prospectively collected data of 80 consecutive patients who underwent laparoscopic right hemicolectomies since 2004 were reviewed retrospectively. An intracorporeal anastomosis was performed in 23 patients, an extracorporeal anastomosis in 57.

Results:

There were no significant differences in median length of stay (4 days), number of removed lymph nodes, estimated blood loss, operative time (190 minutes intracorporeal vs. 180 minutes) and postoperative ileus (22% intracorporeal vs. 16%). The incision length was significantly shorter in the intracorporeal group (4cm vs. 5cm; P=0.004). Complications related to the anastomosis including twisting of the mesentery (n=2), anastomotic volvulus (n=1), or leak (n=1) occurred in 4 patients in the extracorporeal group compared with one minor anastomotic leak in the intracorporeal group. Major complication rates were similar between the 2 groups (4.3% intracorporeal vs. 5.3% extracorporeal).

Conclusion:

The type of anastomosis does not influence short-term outcomes after laparoscopic right hemicolectomy. An intracorporeal anastomosis results in shorter incision length and may decrease wound-related complications.  相似文献   

16.

Objective:

To demonstrate the application of tattooing for the intraoperative localization of posterior wall gastric leiomyoma during laparoscopic resection. The preoperative injection of Indian ink in the tumor-bearing area of the posterior gastric wall eliminates the need to perform anterior wall gastrostomy or intraoperative upper endoscopic tumor localization.

Methods:

A patient with posterior wall gastric leiomyoma was marked with Indian ink during preoperative upper endoscopy. The dye was visualized intraoperatively facilitating wedge resection of the tumor-bearing area with the Endo GIA.

Results:

The patient had an uneventful surgery and recovery. Complete excision of the tumor was accomplished.

Conclusion:

The preoperative endoscopic marking of gastric lesions, facilitates the intraoperative localization and resection of these lesions.  相似文献   

17.

Introduction:

Repair of large paraesophageal hernias by itself is associated with high failure rates in the morbidly obese. A surgical approach addressing both giant paraesophageal hernia and morbid obesity has, to our knowledge, not been explored in the surgical literature.

Methods:

A retrospective review of a bariatric surgery database identified patients who underwent simultaneous repair of large type 3 paraesophageal hernias with primary crus closure and Roux-en-Y gastric bypass (RYGB). Operative time, intraoperative and 30-day morbidity, weight loss, resolution of comorbid conditions and use of anti-reflux medication were outcome measures. Integrity of crural closure was studied with a barium swallow.

Results:

Three patients with a mean body mass index of 46kg/m2 and mean age of 46 years underwent repair of a large paraesophageal hernia, primary crus closure, and RYGB. Mean operative time was 241 minutes and length of stay was 4 days. There was no intraoperative or 30-day morbidity. One patient required endoscopic balloon dilatation of the gastrojejunostomy. At 12 months, all patients were asymptomatic with excellent weight loss and resolution of comorbidities. Contrast studies showed no recurrence of the hiatal hernia.

Conclusion:

Simultaneous laparoscopic repair of large paraesophageal hernias in the morbidly obese is safe and effective.  相似文献   

18.

Background and Objectives:

Bowel anastomosis after anterior resection is one of the most difficult tasks to perform during laparoscopic colorectal surgery. This study aims to evaluate a new feasible and safe intracorporeal anastomosis technique after laparoscopic left-sided colon or rectum resection in a pig model.

Methods:

The technique was evaluated in 5 pigs. The OrVil device (Covidien, Mansfield, Massachusetts) was inserted into the anus and advanced proximally to the rectum. A 0.5-cm incision was made in the sigmoid colon, and the 2 sutures attached to its delivery tube were cut. After the delivery tube was evacuated through the anus, the tip of the anvil was removed through the perforation. The sigmoid colon was transected just distal to the perforation with an endoscopic linear stapler. The rectosigmoid segment to be resected was removed through the anus with a grasper, and distal transection was performed. A 25-mm circular stapler was inserted and combined with the anvil, and end-to-side intracorporeal anastomosis was then performed.

Results:

We performed the technique in 5 pigs. Anastomosis required an average of 12 minutes. We observed that the proximal and distal donuts were completely removed in all pigs. No anastomotic air leakage was observed in any of the animals.

Conclusion:

This study shows the efficacy and safety of intracorporeal anastomosis with the OrVil device after laparoscopic anterior resection.  相似文献   

19.

Background and Objectives:

A short hospital stay is one of the main advantages of laparoscopic surgery. Previous studies have shown that after a multimodal fast-track process, the hospital length of stay can be shortened to between 2 and 5 days. The objective of this review is to show that the hospital length of stay can, in some cases, be reduced to <24 hours.

Methods:

This study retrospectively reviews a surgeon''s experience with laparoscopic surgery over a 12-month period. Seven patients were discharged home within 24 hours after minimally invasive laparoscopic surgical treatment, following a modified fast-track protocol that was adopted for perioperative care.

Results:

Of the 7 patients, 4 received laparoscopic right hemicolectomy for malignant disease and 3 underwent sigmoid colectomies for recurrent diverticulitis. The mean hospital stay was 21 hours, 47 minutes; the mean volume of intraoperative fluid (lactated Ringer) was 1850 mL; the mean surgical blood loss was only 74.3 mL; the mean duration of surgery was 118 minutes; and the patients were ambulated and fed a liquid diet after recovery from anesthesia. The reviewed patients had functional gastrointestinal tracts and were agreeable to the timing of discharge. On the follow-up visit, they showed no adverse consequences such as bleeding, infection, or anastomotic leak.

Conclusion:

Laparoscopic colon surgery that incorporated multimodal perioperative care allowed patients to be discharged within the first 24 hours. Careful postoperative outpatient follow-up is important in monitoring complications such as anastomotic leak, which may not present until postoperative day 5.  相似文献   

20.

INTRODUCTION

Many surgical options exist to treat rectal prolapse with different indications, feasibility and results in urgent and complicated cases. These include perineal or abdominal approaches including rectopexy with or without resection. Perineal approaches have reduced surgical invasivity and hospital stay if compared to transabdominal approaches by open surgery or laparoscopy. Up to now there was still a clear dividing line for surgical treatment between the perineal approach, used more for complicated emergency case while the transabdominal open, or laparoscopic approach more common in elective surgery, but more complex to perform.

PRESENTATION OF CASE

A 37 year old female patient affected by psychiatric disease presented with an unreducible second recurrence of a complicated rectal prolapse. The patient was treated with a third Altemeier procedure but now performed under laparoscopic control. The patient recovered promptly without any complication or recurrence up to the 24 months follow-up.

DISCUSSION

To the best of our knowledge, this is the first case report describing the combined laparoscopic-perineal approach for the treatment of a complicated recurrence of rectal prolapse. The technical feasibility, the rapidity, the optimal outcome and the rationale behind this option all suggest that this laparoscopic assistance certainly allows an implementation of the effectiveness, safety and results of an established effective perineal approach.

CONCLUSION

This combined approach has the advantage of maintaining the simplicity and rapidity of conventional perineal surgery, adding the advantages of abdominal control and avoiding the risks, the invasivity, and the longer duration of more complex laparoscopic procedures.  相似文献   

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