Hem-o-lok plastic clips in securing of the base of the appendix during laparoscopic appendectomy

Comparison of polymeric clip and endoloop in laparoscopic appendectomy: A systematic review and meta-analysis

BACKGROUND

Appendicitis is a common surgical emergency with diverse clinical presentations, making its diagnosis challenging. Laparoscopic appendectomy has become the standard treatment, with various methods for appendiceal stump closure, including polymeric clips and endoloops. This study aims to compare the efficacy and safety of polymeric clips compared with endoloops in laparoscopic appendectomy.

METHODS

A systematic review and meta-analysis were conducted followingPreferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. PubMed, Medline, Scopus, and Embase were searched for studies up to March 25, 2024.

RESULTS

In total, 13 studies, including 6 randomized controlled trials, were analyzed. Polymeric clipping demonstrated significantly shorter surgical time compared with the endoloop (standardized mean difference 0.37, 95% confidence interval 0.22-0.53, P < .00001), with no difference in hospital stay or overall complications. However, the endoloop was associated with a greater incidence of intra-abdominal abscess (risk ratio 3.53, 95% confidence interval 1.56-8.00, P = .003). Other outcomes, including time from instrument application to appendiceal cutting, ileus, and surgical-site infection, showed no significant differences between the 2 techniques.

CONCLUSION

Polymeric clipping appears to be superior to endoloop in terms of shorter surgical time and lower risk of intra-abdominal abscess formation in laparoscopic appendectomy for uncomplicated appendicitis. However, both techniques have similar outcomes regarding hospital stay and overall complications. Further research addressing study limitations and exploring patient-centered outcomes is warranted to guide clinical practice.

Handmade Loop Versus Hem-o-Lok Clip in Closure of Appendiceal Stump During Laparoscopic Appendectomy: Limited Setting in a Peripheral University Hospital

Background: Today, laparoscopy is frequently used in abdominal emergencies such as acute appendicitis. There are several techniques used to close the appendiceal stump during laparoscopic appendectomy. We aimed to compare the use of handmade loop and Hem-o-lok used to close the appendiceal stump in public hospitals where resources are limited, in terms of surgical outcomes and cost. Methods: Between January 2020 and December 2022, patients for whom handmade loops and Hem-o-loks were used to close the appendiceal stump during laparoscopic appendectomy in our clinic were included in the study. There were a total of 638 patients (mean age: 33 ± 13.5 years, 325 females and 313 males) in the patient cohort. Demographic and clinical data, duration of surgery, complications, hospital stay, pathology reports, mortality, and cost of supplies were compared between the two groups. Results: There were 308 patients in the handmade loop group (160 females, 148 males, mean age: 33.7 years, range: 18-85 years) and 330 patients in the Hem-o-lok group (166 females, 164 males, mean age: 32.5 years, range: 18-89 years). There was no significant difference between the two groups for American Society of Anesthesiologists score, duration of symptom, hospital stay, intensive care unit stay, preoperative laboratory values, histopathological results, mortality, and morbidity (P > .05). The mean operation time was 48.76 ± 16.16 minutes in the handmade loop group and 40.53 ± 11.63 minutes in the Hem-o-lok group (p = 0.001). In terms of cost, the cost per case of Hem-o-lok group was about 25.8 times as much as the group that used sutures ($31 versus $1.2). Conclusions: Both methods can be used safely in laparoscopic appendectomy. The use of Hem-o-lok has no advantage other than shortening the operation time. However, it is costlier. Especially in peripheral hospitals where resources are limited, closing the appendiceal stump using a handmade loop is an easy, safe, and cost-effective method.

Single versus double Hem-o-lok clips to secure the apendiceal stump during laparoscopic appendectomy: a prospective randomized multicentric clinical trial

PURPOSE

Polymeric clips (Hem-o-lok ligation system) are now widely used to securing the base of the appendix during laparoscopic appendectomy. Studies comparing the use of single or double hem-o-lok clips are limited. The aim of this study was to compare the reliability of a single hem-o-lok clips with a double hem-o-lok clips for closure of an appendiceal stump.

METHODS

This prospective randomized study includes patients from two centers who underwent laparoscopic appendectomy with the diagnosis of appendicitis between September 2020 and March 2023. Demographic, operative and clinical outcomes of the use of single or double hem-o-lok clips for closure of the appendiceal stump were compared. Factors affecting long postoperative hospital stay were investigated using univariate and multivariate analyzes.

RESULTS

One hundred forty two (48.3%) patients in the single hem-o-lok arm and 152 (51.7%) patients in the double hem-o-lok arm were included in the analysis.The shortest operative time was noted in the single hem-o-lok group (52.1 ± 19.9 versus 61.6 ± 24.9 min, p < 0.001). The median hospital stay was 1 day (range 1-10) in the single hem-o-lok group and 1 day (range 1-12) in the double hem-o-lok group, and was shorter in the single hem-o-lok arm (1.61 ± 1.56 vs 1.84 ± 1.69, p = 0.019). Based on multivariate analysis, drain placement was identified as an independent predictive factor for long hospital stay.

CONCLUSIONS

The use of single hem-o-lok clips for appendiceal stump closure during laparoscopic appendectomy is safe and effective. Trial registration NCT04387370 ( http://www.

CLINICALTRIALS

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Clips closure versus endoloop ligation in laparoscopic appendectomy: a systematic review and meta-analysis of comparative studies

Introduction

Appendiceal stump closure (ASC) is a key step in performing laparoscopic appendicectomy. Currently, there is no gold standard method to achieve this goal. The ideal method should be safe, easily available, and have a short learning curve. Out of all those appendiceal stump closure methods, the use of hem-o-Lok demonstrates its feasibility in replacing the traditionally used endoloop. In this systematic review and meta-analysis, the authors aim to review the currently available evidence addressing the topic of interest.

Method

The PubMed and Embase databases were searched with the paired search terms appendicitis, clip, and endoloop by two authors separately. The quality of the randomized controlled trials was assessed with the Cochrane risk of bias tool, and the quality of the observational studies was assessed with the Newcastle-Ottawa scale. Meta-analysis was conducted with Cochrane Review Manager version 5.4.

Result

Eighteen studies were included for quantitative analysis. The appendiceal stump closure time was shortened by 2 min 7 s using a hem-o-lok with 95% CI 1 min 48 s-2 min 26 s, p less than 0.00001. The pooled results of 6 randomized controlled trials demonstrated a statistically significant reduction in operative time of 5.15 min from adopting the hem-o-lok approach (p=0.001, 95% CI -2.05 to -8.24 min). Both endoloop and hem-o-lok demonstrated a comparable postoperative hospital stay and infective complication profile.

Conclusion

The application of Hem-o-Lok demonstrates a comparable to endoloop ligation in terms of operative time and a potential benefit on the complication. When considering financial and technical aspects, it serves as an alternative to endoloop.

Appendiceal stump closure in laparoscopic appendectomy: one endoloop vs. two endoloops vs. two endoclips-does it matter?

PURPOSE

Appendiceal stump leak rate after laparoscopic appendectomy is extremely low. Various methods are used to close the appendiceal stump. This study aimed to compare the outcome of three appendiceal stump closure methods.

METHODS

A retrospective study comparing stump closure methods and postoperative outcomes was conducted from January 2018 to June 2020. Patient data included demographics, pre-operative data, surgical technique, findings, and postoperative complications.

RESULTS

Out of 1021 appendectomy patients, 733 underwent laparoscopic appendectomy for acute appendicitis utilizing one of the three compared appendiceal stump closure methods. Consequently, 360 appendixes were ligated with one endoloop (1EL group), 300 appendixes had two endoloops (2EL group), and 73 appendixes were ligated with two endoclips (2EC group). All groups used a LigaSure for resection. The rate of postoperative intra-abdominal abscess was 1% (4 patients) in 1EL group vs. 1% (3 patients) in 2EL group vs. none in 2EC group (p = 0.43). There were no reported appendiceal stump leaks. Overall complication rates were 4% (14 patients), 3% (9 patients), and 0 (p = 0.15), and the mean operative length was 43 ± 21, 54 ± 22, and 43 ± 20 mins for the 1EL, 2EL, and 2EC, respectively (p < 0.01). Average cost of one endoloop is 110$, and one endoclip cartridge is 180$.

CONCLUSIONS

None of the methods were found clinically superior over the others. Considering the low and mild complication rate, it appears reasonable to prefer one method simply by cost. The use of a single endoloop may result in substantial cost reduction. Medical centers may advise surgeons to use a single-endoloop technique.

Comparison of Two Stump Closure Techniques in Laparoscopic Appendicectomy: A Single-Centre Prospective Cohort Study

Introduction Acute appendicitis is a frequent illness that manifests as an emergency and most of the cases necessitate surgical intervention. One of the most critical processes in a laparoscopic appendicectomy is the closure of the appendicular stump. For the closure of the stump of the appendix, several approaches have been employed and explored, but the one with the best outcomes has yet to be proved. The purpose of this study was to evaluate the medical results and cost analyses of laparoscopic appendicectomy with two of the commonly used stump closure techniques - ENDOLOOP^® and Hem-o-lok^®. Materials and methods A two-year prospective hospital-based cohort study was conducted from June 2019 to July 2021. All the patients in the study were randomly assigned to one of two experimental arms (ENDOLOOP^® and Hem-o-lok^®). The clinical and follow-up data of these patients were collected and tabulated into a data sheet and analyzed. Results In total, 180 individuals were included in the research (90 in each arm). No statistically significant difference was found in comparing the age, gender or diameter of the appendix among the two groups. The time taken for surgery showed significant differences among the two study groups. The time taken for the procedure in the Hem-o-lok® group was significantly lower than the ENDOLOOP® group (40.3 ± 12.3 minutes vs 50.83 ± 10.5 minutes, p < 0.001). No intraoperative or immediate postoperative complications were noted in either of the groups. The average duration of hospital stay was 2.7 ± 0.9 days in the Hem-o-lok® group, while it was 3.1 ± 0.8 days in the ENDOLOOP® group (p = 0.986). The material cost for the stump ligation with Hem-o-lok® was Rs. 310 ± Rs. 76 while that using ENDOLOOP^® was Rs. 630 ± Rs. 118 (p < 0.001). In the Hem-o-lok^® subset of patients, the mean direct expenses of laparoscopic appendicectomy were considerably lower. During the 12-week follow-up period, none of the patients had any post-operative complications. Conclusion According to the results of this study, both the technical variations of appendix stump closure are equal in terms of postoperative complications. When compared to the ENDOLOOP^® group, the Hem-o-lok® group had a shorter duration of surgery and ended up spending less money. Hem-o-lok® clips have the potential to become the preferred way of anchoring the appendix base during laparoscopic appendicectomy.

Closure of the appendiceal stump in laparoscopic appendectomy: A systematic review of the literature

Background

Closure of the appendiceal stump is a key step performed during laparoscopic appendicectomy. Inadequate management of the appendiceal stump has the potential to cause significant morbidity. Several methods of stump closure have been described, however high-level evidence is limited. We performed a systematic review evaluating clinical outcomes and quality of the evidence for the methods of appendiceal stump closure.

Methods

A systematic literature search was performed using Medline, Embase, Cochrane Database and Google Scholar to identify studies comparing appendiceal stump closure methods in laparoscopic appendectomy for acute appendicitis from inception to October 2019. Data regarding operative duration, peri-operative complications, length of stay and costs were collated from all included studies.

Results

From 160 identified studies, 19 met the inclusion criteria. Endoloops and endoclips provide equivalent clinical outcomes at lower cost, while operative duration was shortest with endoclip closure. Endostapler devices have the lowest rate of peri-operative complications (3.56%), however their cost limits their regular use in many healthcare environments. Post-operative complication rate and length of stay were similar for all stump closure methods. Conclusion: Although there are no significant differences in method of stump closure in laparoscopic appendectomy, closure with endoclips provides the shortest operative duration. There is a need for robust and standardized reporting of cost data when comparing stump closure methods, together with higher level evidence in the form of multi-centre randomized controlled trials before firm conclusions can be drawn regarding the optimal method of stump closure.

•

Currently there is no robust higher order evidence which assesses clinical outcomes, cost and time efficiency of methods of stump closure in laparoscopic appendicectomy.

•

This is the first systematic review to investigate clinical outcomes, cost and quality of current evidence for all methods of laparoscopic appendiceal stump closure in acute appendicitis.

•

No difference was observed in methods of stump closure in complication rate, length of stay, cost, and time efficiency.

•

Endostaplers appear to provide most robust closure, albeit at a higher economic cost.

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Endoloops appear to provide efficient and successful closure, and are currently the most frequently studied method of closure.

A comparison of non-absorbable polymeric clips and staplers for laparoscopic appendiceal stump closure: analysis of 618 adult patients

PURPOSE

The aim of this long-term study was the comparison of appendiceal stump closure with polymeric clips or staplers with respect to perioperative costs and surgical outcome under routine conditions in a university centre.

METHODS

For this retrospective chart review, a total of 618 patients undergoing laparoscopic appendectomy for suspected acute appendicitis between 2010 and 2017 were reviewed: 410 patients in the stapler group and 208 patients in the clip group. The database contained demographic data, operation time, inflammation parameters, closure method of the stump, surgeon status, length of hospital stay, and complications as well as histology reports. The costs were also compared.

RESULTS

Clip application was more likely among younger patients (mean age 33.6 years vs. 41.7 years). Histopathological evidence for appendiceal pathology was found in 96.6% of patients in the clip group and 99.5% of patients in the stapler group. Laparoscopic appendectomy in the clip group was more frequently performed by resident physicians (69.2%) than in the stapler group (57.8%). The mean postoperative stay was 2.9 days in the clip group and 3.7 days in the stapler group. The use of the polymeric clip resulted in considerable cost savings (19.94€ vs. 348.70€).

CONCLUSIONS

The use of polymeric clips for appendiceal stump closure during appendectomy is safe and effective. The base of the appendix is amenable to clipping in 32% of appendectomies in adult patients. This study supports the use of polymeric clips over staplers to decrease cost and environmental impact.

The use of polymeric clips in securing the appendiceal stump during laparoscopic appendicectomy: a systematic review

PURPOSE

A key step during laparoscopic appendicectomy is securing the appendiceal stump. This has traditionally been achieved using vicryl endoloops, but increasing evidence suggests that the use of polymeric clips (Hem-o-lok) may be a safe and viable method. Current evidence for its clinical use in laparoscopic appendicectomy is unknown. We performed a systematic review of the literature examining the clinical outcomes of laparoscopic appendicectomy using polymeric clips compared to other methods of stump closure.

METHODS

A systematic literature review based on PRISMA guidelines was performed using MEDLINE, PubMed, EMBASE and Cochrane library databases between 2000 and 2017. All studies analysing appendiceal stump closure during laparoscopic appendicectomy using polymeric clips compared to other methods of stump closure were included. The methodological quality of the included studies was assessed using the Cochrane Handbook for Systematic Reviews. The review was registered with the PROSPERO register of systematic reviews.

RESULTS

Ten studies were included, involving 702 patients, 7 of which were prospective studies and 1 a randomised control trial. Polymeric clips were found to be the cheapest method (€20.47 average per patient) and also had the lowest rate of complications (2.7%) compared to other commonly used closure methods. Meanwhile, operative time and duration of in-patient stay were similar between groups.

CONCLUSIONS

Current evidence suggests that polymeric clips are an effective and cost-efficient method for stump closure in laparoscopic appendicectomy for acute appendicitis. Further high-quality evidence is required before polymeric clips can be recommended as the gold standard for appendiceal stump closure.

Re-evaluation of purse string suture in laparoscopic appendectomy

PURPOSE

The aim of this study was to compare the outcomes of laparoscopic appendectomy (LA) using purse string invaginating sutures (PS) with those using intracorporeal knotting (IK) or Hem-o-lock polymeric clips (HL).

METHODS

A total of 882 patients who underwent laparoscopic appendectomy from January 2015 to December 2017 were studied retrospectively. Of these, 538 patients used PS, 229 patients used IK and 115 patients used HL to close the appendiceal stump. Their demographic characteristics, intraoperative findings and postoperative complications were analysed retrospectively.

RESULTS

There were similar percentages of complicated cases in all the groups (21.7% in PS vs. 21.4% in IK vs. 24.3% in HL, p = 0.803). The mean length of hospital stay was shorter in PS group when compared to IK or HL group (3.72 + 2.35 in PS vs. 4.41 + 2.40 in IK, 4.43 + 2.66 in HL, p < 0.05) as well as lower ASA scores (1.7 + 0.6 in PS vs. 1.8 + 0.6 in IK vs. 1.7 + 0.6 in HL, p < 0.05). The overall complication rates for the PS, the HL and the IK groups were 12.1, 8.7 and 9.2%, respectively. The rate of wound infection was higher in PS group for uncomplicated appendicitis (5.0% in PS vs. 2.8% in IK and 1.1% in HL, p = 0.129). Furthermore, there were no differences in the rate of intra-abdominal infection among the groups in both uncomplicated and complicated cases.

CONCLUSIONS

Based on our results, purse string suture failed to demonstrate better postoperative outcome in laparoscopic appendectomy and is no longer recommended by our institution as initial approach.

Securing the Appendiceal Stump During Emergency Appendicectomy: Options and Influencing Factors in Current UK Surgical Practice

INTRODUCTION

The aim of our study was to identify the most commonly employed methods and influencing factors for securing the appendiceal stump in current NHS practice.

METHODS

An electronic survey of the Scottish Surgical Research Group network, invitation extended to the UK National Research Collaborative.

RESULTS

A total of 111 responses were received from 32 surgical centers; 28 (25.2%) consultants, 66 (59.5%) specialty trainees and 12 (10.8%) core trainees. Endoscopic ligatures were the preferred method in 96 (86.5%) with no difference in those with the greatest operative experience (P=0.79), 12 (10.8%) preferred polymeric clips. Ease of application (70.3%) and severity of stump inflammation (65.8%) had the greatest influence on the method chosen. Cost was a factor in 36.0%.

CONCLUSIONS

The preferred method for securing the appendiceal stump in UK practice is endoscopic ligatures regardless of operative experience. Factors with the greatest influence on the method employed include the ease of application and severity of stump inflammation. Our findings are likely to be representative of current NHS practice in Scotland.

Polymeric clips are a quicker and cheaper alternative to endoscopic ligatures for securing the appendiceal stump during laparoscopic appendicectomy

Introduction The use of polymeric clips in securing the appendiceal stump has been increasingly reported as a viable alternative to current methods in emergency laparoscopic appendicectomy. We evaluated the operative outcomes following the use of polymeric clips versus endoscopic ligatures. The primary endpoint was operative time, with secondary outcomes including complications, inpatient stay, and cost analysis. Materials and methods Operative records were retrospectively analysed to identify patients undergoing laparoscopic appendicectomy between January 2014 and June 2015. Data collected included age, gender, body mass index, duration of surgery, length of hospital stay, antibiotic use, preoperative haematological and biochemical parameters, 30-day readmission rate and complications. Results A total of 125 patients were included within the study, with 78 within the endoloop group and 47 in the polymeric clip group. There were no differences in age, gender, body mass index, hospital stay, antibiotic use, 30-day readmission rates or postoperative complications. Operative time was significantly reduced in the polymeric clip group (59 vs. 68 minutes, P = 0.00751). The use of polymeric clips cost £21 compared with £49 for endoloops per operation, which rose to £70 if both clips and endoloops were used during the procedure. Discussion Polymeric clips are a safe, viable and economical method for securing the appendiceal stump during laparoscopic appendicectomy. The clinical significance of nine minutes of reduced operating time in the polymeric clip cohort warrants further study with an adequately powered randomised controlled trial.

Comparison of open appendectomy and laparoscopic appendectomy with laparoscopic intracorporeal knotting and glove endobag techniques: A prospective observational study

Objective

Despite the recent increase in the use of laparoscopic appendectomy procedures to treat acute appendicitis, laparoscopic appendectomy is not necessarily the best treatment modality. The aim of this study is to examine the value of laparoscopic intracorporeal knotting and glove endobag in terms of various parameters and in terms of reducing the costs related to laparoscopic appendectomy procedures.

Material and Methods

Seventy-two acute appendicitis patients who underwent laparoscopic appendectomy and open appendectomy surgery were enrolled in the study and were evaluated prospectively. The patients were divided into two groups: group 1 was treated with laparoscopic appendectomy using laparoscopic intracorpreal knotting and glove endobag (n=36) and group 2 was treated with open appendectomy (n=36). The two groups were statistically compared in terms of preoperative symptoms and signs, laboratory and imaging findings, operation time and technique, pain score, gas and stool outputs, duration of hospital stay, return to normal activity, and complications.

Results

No statistically significant differences were found between the groups in relation to gender, age, body mass index, or pre-operation findings, which included loss of appetite, vomiting, time when pain started, displacement of pain, defense, rebound, imaging methods, and laboratory and pathology examinations (p>0.05). Moreover, there were no differences between the groups with respect to drain usage, hospital stay time, or complications (p>0.05). In contrast, a statistically significant difference was found between the groups in terms of operation time, pain scores, gas-stool outputs, and return to normal activity in the laparoscopic appendectomy group (p=0.001).

Conclusion

Laparoscopic appendectomy can be performed in a facile, safe, and cost-effective manner with laparoscopic intracorporeal knotting and glove endobag. By using these techniques, the use of expensive instruments can be avoided when performing laparoscopic appendectomy.

Closure methods of the appendix stump for complications during laparoscopic appendectomy

BACKGROUND

Laparoscopic appendectomy is amongst the most common general surgical procedures performed in the developed world. Arguably, the most critical part of this procedure is effective closure of the appendix stump to prevent catastrophic intra-abdominal complications from a faecal leak into the abdominal cavity. A variety of methods to close the appendix stump are used worldwide; these can be broadly divided into traditional ligatures (such as intracorporeal or extracorporeal ligatures or Roeder loops) and mechanical devices (such as stapling devices, clips, or electrothermal devices). However, the optimal method remains unclear.

OBJECTIVES

To compare all surgical techniques now used for appendix stump closure during laparoscopic appendectomy.

SEARCH METHODS

In June 2017, we searched the Cochrane Central Register of Controlled Trials (CENTRAL; 2017, Issue 6) in the Cochrane Library, MEDLINE Ovid (1946 to 14 June 2017), Embase Ovid (1974 to 14 June 2017), Science Citation Index - Expanded (14 June 2017), China Biological Medicine Database (CBM), the World Health Organization International Trials Registry Platform search portal, ClinicalTrials.gov, Current Controlled Trials, the Chinese Clinical Trials Register, and the EU Clinical Trials Register (all in June 2017). We searched the reference lists of relevant publications as well as meeting abstracts and Conference Proceedings Citation Index to look for additional relevant clinical trials.

SELECTION CRITERIA

We included all randomised controlled trials (RCTs) that compared mechanical appendix stump closure (stapler, clips, or electrothermal devices) versus ligation (Endoloop, Roeder loop, or intracorporeal knot techniques) for uncomplicated appendicitis.

DATA COLLECTION AND ANALYSIS

Two review authors identified trials for inclusion, collected data, and assessed risk of bias independently. We performed the meta-analysis using Review Manager 5. We calculated the odds ratio (OR) for dichotomous outcomes and the mean difference (MD) for continuous outcomes, with 95% confidence intervals (CIs).

MAIN RESULTS

We included eight randomised studies encompassing 850 participants. Five studies compared titanium clips versus ligature, two studies compared an endoscopic stapler device versus ligature, and one study compared an endoscopic stapler device, titanium clips, and ligature. In our analyses of primary outcomes, we found no differences in total complications (OR 0.97, 95% CI 0.27 to 3.50, 8 RCTs, very low-quality evidence), intraoperative complications (OR 0.93, 95% CI 0.34 to 2.55, 8 RCTs, very low-quality evidence), or postoperative complications (OR 0.80, 95% CI 0.21 to 3.13, 8 RCTs, very low-quality evidence) between ligature and all types of mechanical devices. However, our analyses of secondary outcomes revealed that use of mechanical devices saved approximately nine minutes of total operating time when compared with use of a ligature (mean difference (MD) -9.04 minutes, 95% CI -12.97 to -5.11 minutes, 8 RCTs, very low-quality evidence). However, this finding did not translate into a clinically or statistically significant reduction in inpatient hospital stay (MD 0.02 days, 95% CI -0.12 to 0.17 days, 8 RCTs, very low-quality evidence). Available information was insufficient for reliable comparison of total hospital costs and postoperative pain/quality of life between the two approaches. Overall, evidence across all analyses was of very low quality, with substantial potential for confounding factors. Given the limitations of all studies in terms of bias and the low quality of available evidence, a clear conclusion regarding superiority of any one particular type of mechanical device over another is not possible.

AUTHORS' CONCLUSIONS

Evidence is insufficient at present to advocate omission of conventional ligature-based appendix stump closure in favour of any single type of mechanical device over another in uncomplicated appendicitis.

Endostapler versus Hem-O-Lok clip to secure the appendiceal stump and mesoappendix during laparoscopic appendectomy

BACKGROUND

Our study evaluates the safety and cost of using the Hem-O-Lok (HOL) clip in laparoscopic appendectomy (LA).

METHOD

We prospectively compared 30-day postoperative outcomes and cost between HOL clip and endoscopic stapler (ES) in LA at a single institution.

RESULTS

HOL clip was used in 45 out of 92 LA. Perforated appendicitis (29.8% vs. 11.1%, P = 0.027) and postoperative complications were more common in the ES group (19.2% vs. 2.2%, p = 0.009). In multivariate analysis, HOL clip was associated with lower complications rate (OR = 0.05, 95% CI 0.003-0.744; p = 0.030). In propensity score matched cohort, complications were not different (p > 0.05). In patients with non-perforated appendicitis, HOL use increased operative time by 10 min on average (p = 0.004). Minimum ES cost per single appendectomy was $273.13, while HOL clip cost was $32.14.

CONCLUSION

The use of HOL clip in LA is safe and it reduced the costs of the procedure in comparison to the use of ES.

Laparoscopic Appendectomy Using Hem-o-lok Polymer Clips: A Single-Center Experience

Although the surgical technique of laparoscopic appendectomy (LA) stump has been well understood, there are many alternative techniques in relation to torocar positioning and closure of appendicular stump. In recent times, Hem-o-lok polymer clips (HOLP) was implemented in several studies in the closure of appendicular stump because of its lower cost and easy implementation. The purpose of this study to investigate the safety, usefulness, and cost effectiveness of HOLP for the closure appendecular stumps in LA. The study was carried out between December 2011 and December 2013. Patients with acute appendicitis were included in the study. Two groups were defined as patients with the HOLP and patients with endoloop. The prospectively collected data, including age, sex, body mass index, operative time, hospital stay, cost effectiveness, intraoperative, and postoperative complications were retrospectively analyzed. A total of 66 (35 male, 31 female) LA were performed. The endoloop group consisted of 30 patients (16 male, 14 female, and mean age, 30.4 ± 1.8), while the HOLP group consisted of 36 patients (19 male, 17 female, and mean age, 28.6 ± 1.6). The mean operative time was 42.5 ± 1.3 in the HOLP group and 53.8 ± 1.5 in the endoloop group (P &lt; 0.0001). The mean hospital stay was 2.1 ± 0.2 days in HOLP group and 2 ± 0.2 in the endoloop group (P = 0.73). Both patient groups had no intraoperative complication, and no cases were converted to open procedure. Total hospital cost was 1170.8 ± 6.3 dollars in the HOLP group and 1094 ± 6.9 dollars in the endoloop group (P &lt; 0.0001). The use of HOLP for the appendicular stumps in LA is a feasible, safe, and cost-effective procedure in patients with uncomplicated acute appendicitis.

Safety and Efficacy of Polymeric Clips for Appendiceal Stump Closure

Background and Objectives:

Laparoscopic appendectomy remains one of the most common emergency general surgical procedures in the United States. In an era of increasing focus on costs in medical care, we sought to evaluate the use of polymeric clips to secure the appendiceal base during laparoscopic appendectomy.

Methods:

We performed a prospective cohort study of patients undergoing laparoscopic appendectomy from April 2013 through September 2014 at a single academic teaching institution. Polymeric clips were used to secure the appendiceal stump. Tissue dissection techniques and control of the mesoappendix were the operating surgeon's choice. Clinical outcomes are reported.

Results:

A total of 25 patients (56% women; mean age, 41 y; body mass index of 29 kg/m²) were enrolled in our study and underwent laparoscopic appendectomy with polymeric clips. One patient was unable to have polymeric clips placed due to inflammation of the appendiceal base. There were no major perioperative complications. One patient developed a suture abscess in the umbilical incision, and another had prolonged ileus with computed tomography demonstrating persistent pelvic fluid that did not require intervention. Median length of stay was 1 d and mean length of follow-up was 81 d. The use of polymeric clips contributed ∼ $32 to the overall operative cost.

Conclusions:

Polymeric clips are a safe alternative for securing the appendiceal base in laparoscopic appendectomy. They offer significant cost savings without any evidence of increased complications.

Laparoscopic appendectomy: Hem-o-lok versus Endoloop in stump closure

There are several techniques described to close the appendicular stump during laparoscopic appendectomy. The aim of this study was to investigate the safety and usefulness of the Hem-o-lok clip for the closure of appendicular stump, comparing these data with those concerning the endo-loop. We conducted a retrospective study that compared two groups of patients who underwent laparoscopic appendectomy from 2010 to 2015 at our institution. We used the Endoloop to close the stump in the first group (group I) and the Hem-o-lok in the second group (group II). We reviewed patient's data including: complications, operative time, length of stay, costs. There were 121 patients in group I and 138 patients in group II. The mean operative times were 40.5 min in group I and 36.4 min in the group II. No intraoperative complications and no mortality were observed in either group. The mean postoperative length of hospital stay was similar for both groups. There was no rehospitalization after discharge. The complication rate did not reach statistical significance between the groups. The cost of the procedure using the Hem-o-lok has been lower than using the Endoloop. Both the Endoloop and Hem-o-lok are safe for the closure of the appendicular stump. Hem-o-lok appears to be superior than Endoloop in terms of easeness of use and cheapness, maintaining the same safety.

Comparison of the results of laparoscopic appendectomies with application of different techniques for closure of the appendicular stump

Background

Nowadays laparoscopy is used frequently not only in elective surgery but also in abdominal emergencies, including acute appendicitis. There are several techniques used to close the appendicular stump during laparoscopic appendectomy. The aim of the study was to present and compare the results of minimally invasive appendectomies performed with the use of endoscopic staplers (group A), titanium endoclips (group B) and invaginating sutures (group C).

Methods

Three hundred seven patients (mean age = 35.6; SD = 15.9; 178 males,129 females) operated on laparoscopically for acute appendicitis from January 2010 to December 2014 at our department were included in the study. We reviewed retrospectively patients’ data including: age, sex, duration of the surgical procedure and hospital stay, mortality, intraoperative and postoperative complication rates in all analyzed groups.

Results

There were 102 patients in group A (mean age = 35.8;SD = 15.4; 57 males, 45 females). The average hospital stay in this group was 4.3 days (SD = 1.7), average operation time was 62.0 min (SD = 15), postoperative complication rate was 5.9 %. There were 160 patients in group B (mean age = 35.0; SD = 16.3; 96 males, 64 females). The average hospital stay in this group was 3.6 days (SD = 1.4), average operation time was 62.9 min (SD = 13.5), postoperative complication rate was 5.6 %. There were 45 patients in group C (mean age =37.3; SD = 15.8; 25 males, 20 females). The average hospital stay in this group was 4.6 days (SD = 2.0), average operation time was 73.9 min (SD = 20.8), postoperative complication rate was 6.7 %. There were no intraoperative complications and no mortality in all compared groups of patients operated on laparoscopically for acute appendicitis.

Conclusions

Laparoscopic appendectomies with application of different techniques for closure of the appendicular stump are useful and safe. In our study the shortest hospital stay and lowest complication rate were observed in patients operated with the use of titanium endoclips. The longest hospital stay and operation time and the highest complication rate was associated with the use of invaginating sutures.

Early results of pediatric appendicitis after adoption of diagnosis-related group-based payment system in South Korea

Purpose

As an alternative to the existing fee-for-service (FFS) system, a diagnosis-related group (DRG)-based payment system has been suggested. The aim of this study was to investigate the early results of pediatric appendicitis treatment under the DRG system, focusing on health care expenditure and quality of health care services.

Patients and methods

The medical records of 60 patients, 30 patients before (FFS group), and 30 patients after adoption of the DRG system (DRG), were reviewed retrospectively.

Results

Mean hospital stay was shortened, but the complication and readmission rates did not worsen in the DRG. Overall health care expenditure and self-payment decreased from Korean Won (KRW) 2,499,935 and KRW 985,540, respectively, in the FFS group to KRW 2,386,552 and KRW 492,920, respectively, in the DRG. The insurer’s payment increased from KRW 1,514,395 in the FFS group to KRW 1,893,632 in the DRG. For patients in the DRG, calculation by the DRG system yielded greater overall expenditure (KRW 2,020,209 vs KRW 2,386,552) but lower self-payment (KRW 577,803 vs KRW 492,920) than calculation by the FFS system.

Conclusion

The DRG system worked well in pediatric patients with acute appendicitis in terms of cost-effectiveness over the short term. The gradual burden on the national health insurance fund should be taken into consideration.

Comparison of outcomes of laparoscopic intracorporeal knotting technique in patients with complicated and noncomplicated acute appendicitis

Background and aim

In our study we aimed to compare laparoscopic intracorporeal knotting technique (base of the appendix was ligated with 20 cm of 2.0 silk) in patients with complicated acute appendicitis (CAA) and noncomplicated acute appendicitis.

Patients and methods

Ninety patients (female/male: 40/50, age ranging from 16 to 60 years, median age and interquartile range [IQR]: 25 [20; 32] years) who underwent laparoscopic appendectomy were included in the study. The patients were evaluated for the type of acute appendicitis, duration of operation, duration of hospital stay, and postoperative complications.

Results

The number of cases diagnosed as CAA was 28 (31.1%), and the number of noncomplicated cases was 62 (68.9%). We found that there was no significant difference in postoperative complication rates between complicated and noncomplicated appendicitis cases. Incision site infection was seen in seven cases (7.8%) and ileus was seen in two cases (2.2%). Bleeding, intra-abdominal abscess, and appendix stump leakage were not observed in any of the cases. Median and IQR duration of operation were 42 (35; 52) minutes and median and IQR duration of hospital stay were detected as 2 (1; 2) (range 1–10) days.

Conclusion

Laparoscopic intracorporeal knotting technique may be a safe, effective, and reliable technique as the materials needed for closing the appendix stumps are easily available for both CAA cases and noncomplicated cases.

Management of appendiceal stump in laparoscopic appendectomy--clips or ligature: a systematic review and meta-analysis

BACKGROUND

Appendicular stump closure is a crucial step during laparoscopic appendectomy. Recently, endoclips (ECs) have been described for ligation of the appendicular stump. The objective of this review was to compare outcomes with EC versus endoligature (EL) for appendiceal stump closure during laparoscopic appendectomy.

MATERIALS AND METHODS

A literature search of Medline, Embase, Cochrane Database, and Google Scholar was performed to identify studies comparing use of EL versus EC in laparoscopic appendectomy between January 1992 and September 2013. Reviews of each study were conducted, and data were extracted. The random-effects model was used to combine data, and between-study heterogeneity was assessed.

RESULTS

Seven of the 101 identified studies met the inclusion criteria: four randomized controlled trials and three case controlled series. For the primary outcome of perioperative and postoperative complications, there was no significant difference between the EC versus EL groups. No differences were noted in length of hospital stay. However, a significant reduction in operative time was observed with EC as opposed to EL (standardized mean difference=-0.90, 95% confidence interval=-1.26 to -0.54, P=.001). Moreover, EC procedures were less expensive than EL procedures.

CONCLUSIONS

EC application in the management of appendiceal stump during laparoscopic appendectomy appears to be simple, efficacious, safe, and a cost-effective alternative.

Laparoscopic appendectomy: State of the art. Tailored approach to the application of laparoscopic appendectomy?

Acute appendicitis is the most common surgical emergency in developed countries. The treatment of acute appendicitis is either open or laparoscopic appendectomy. The latter has gained wide acceptance in the past years, although the debate on the true merits of laparoscopic appendectomy is still on going. Some authors prefer this approach as the gold standard for all patients, but in our opinion a tailored approach is warranted for specific patient groups. In addition, a standardised guideline on the technical aspects is still lacking. In the current article, open versus laparoscopic appendectomy and several technical aspects, such as stump closure, appendix extraction and single incision are discussed laparoscopic appendectomy are being addressed. In the future perspectives we will briefly discuss the third 'newly' introduced antibiotic treatment.

Radiologic advantages of potential use of polymer plastic clips in neurosurgery

BACKGROUND

Plastic clips are made of diamagnetic material and may result in fewer computed tomography (CT) and magnetic resonance artifacts than titanium clips. Considering that polymer plastic clips are increasingly being used in endoscopic surgery, our study examined the CT and magnetic resonance imaging (MRI) characteristics of plastic clips after application in the neurocranium and compared them with titanium clips.

METHODS

Craniotomy was performed on the heads of domestic pigs (Sus scrofa domestica), and, at an angle of 90°, a permanent Yasargil FT 746 T clip was placed in a frontobasal, interhemispheric position. A plastic polymer medium-large Hem-o-lok clip was placed in the same position into another animal. After this procedure, CT of the brain was performed using Siemens 16 slice, followed by an MRI scan, on Philips MRI, 1.5 Tesla. The CT and magnetic resonance scans were analyzed.

RESULTS

On axial CT sections through the site of placement of titanium clips, dotted hyperdensity with a high value of Hounsfield units (HUI) of about 2800-3000 could be clearly seen. At the site where the plastic polymer clips were placed, discrete hyperdensity was observed, measuring 130-140 HUI. MRI of the brain in which titanium clips were used revealed a hypointensive T1W signal in the interhemispheric fissure, with a hypointensive T2W signal. On the other hand, upon examination of the MRI of the brain in which plastic clips were used, the T1W signal described above did not occur, and there was also no T2W signal, and no artifacts observed.

CONCLUSIONS

The plastic clips are made of a diamagnetic, nonconductive material that results in fewer CT and MRI artifacts than titanium clips.

Appendectomy in Germany-an analysis of a nationwide survey 2011/2012

INTRODUCTION

Although appendectomies are frequently performed and new procedural techniques have emerged, no nationwide analysis exists after the cessation of the German quality control in 2004.

METHODS

One thousand eight hundred seventy surgical hospitals in Germany were asked to answer questions anonymously concerning the size of the department, applied procedural techniques, various technical details, as well as the approach to the intraoperative finding of an inconspicuous appendix.

RESULTS

We received 643 questionnaires (34.4 %) for evaluation. Almost all hospitals (95.5 %) offer laparoscopic appendectomy (LA), 15.4 % offer single-port (SPA), and 2.2 % (hybrid-) NOTES technique (NA). LA is the standard procedure in 85.2 % of male and in 89.1 % for female patients. In an open procedure (OA), the appendix and mesoappendix are mostly ligated (93.8 and 91.5 %). A Veress needle and open access are employed equally for LA. In 66.6 % of LA, the appendix is divided using an Endo-GIA, the mesoappendix in 45.5 % with bipolar coagulation. Almost half of the hospitals routinely flush the site in OA and LA. In open surgery with an inconspicuous appendix but a pathological finding elsewhere in the abdomen, it is resected "en principe" in 64.7 % and in the absence of any pathological finding in 91.2 %. For laparoscopic procedures, the numbers are 54.8 and 88.4 %.

CONCLUSIONS

Most German hospitals perform appendectomies laparoscopically regardless of patients' gender. Usage of an Endo-GIA is widely established. SPA has not gained much acceptance, nor is NA widely used yet. In the absence of any pathological findings in particular, the macroscopically inconspicuous appendix results in an appendectomy "en principe" in most German hospitals.

The usefulness and safety of Hem-o-lok clips for the closure of appendicular stump during laparoscopic appendectomy

PURPOSE

The purpose of this study was to investigate the safety and usefulness of the Hem-o-lok clip for the closure of appendicular stumps and limitations of the Hem-o-lok clip.

METHODS

From May 2010 to August 2011, 105 consecutive patients underwent laparoscopic appendectomies by three surgeons. XL size Hem-o-lok clips were used for the closure of appendicular stumps by one surgeon. The remaining surgeons used double endoloop ligatures. Prospectively collected data from patients who underwent laparoscopic appendectomy due to acute appendicitis were retrospectively reviewed.

RESULTS

A total of 105 laparoscopic appendectomies were performed. The endoloop group consisted of 66 patients (mean age, 34.6 years; range, 16 to 82 years), while the Hem-o-lok group consisted of 39 patients (mean age, 43.5 years; range, 11 to 88 years). In three cases, the Hem-o-lok clip was not used due to enlargement and severe inflammation of the appendix base. No specific intraoperative or postoperative complications were observed in either group.

CONCLUSION

The use of Hem-o-lok clips for the closure of appendicular stumps in laparoscopic appendectomy is a feasible, safe, fast and cost-effective procedure in patients with a mildly to moderately inflamed appendix base of less than 10 mm in diameter.

Comparison of intracorporeal knot-tying suture (polyglactin) and titanium endoclips in laparoscopic appendiceal stump closure: a prospective randomized study

BACKGROUND

Laparoscopic appendectomy is a well-described surgical technique. However, concerns still exist regarding whether the closure of the appendiceal stump should be done with a clip, an endoloop, staples, or other techniques. Therefore, several modifications to the original technique with new materials have been introduced for appendiceal stump closure. The aim of this study was to compare intracorporeal (polyglactin) knot-tying suture with titanium endoclips in appendiceal stump closure during laparoscopic appendectomy.

METHODS

The study was carried out as a prospective randomized clinical trial between April 2010 and February 2011. Patients with a presentation of appendicitis were included into the study. Two groups were defined-patients with the titanium endoclip and patients with the knot-tying (polyglactin) suture. The results in terms of operating time, complication rates, and hospital stay were analyzed.

RESULTS

Sixty-one patients who underwent laparoscopic appendectomy were enrolled in the titanium endoclip group (n=30) or the knot-tying (polyglactin) suture group (n=31). No statistically significant differences were detected between the groups in terms of the distribution of age, sex percentage, appendix localization, and histopathologic diagnosis (P>0.05). One patient required a second operation on postoperative day 10 because of intraperitoneal abscess. The mean operative time for the endoclip group (41.27 ± 12.2 min) was shorter than that for the knot-tying group (62.81 ± 15.4 min) (P=0.001). No statistically significant differences were detected between the groups in terms of hospital stay, follow-up time, and preoperative and postoperative complications (P>0.05).

CONCLUSIONS

In laparoscopic appendectomy, using a titanium endoclip for optimizing and controlling the appendiceal stump closure is safe and is associated with shorter operation time. This also simplifies the procedure, so it can be a useful alternative to intracorporeal knot-tying for appendiceal stump closure.

Appendix stump closure with titanium clips in laparoscopic appendectomy

Purpose

Different techniques, including clips, have been used to close the stump in laparoscopic appendectomy. The aim was to investigate the results after application of a newly developed titanium clip for this operation.

Methods

From June 2008 to February 2010, 104 patients from two different hospitals undergoing laparoscopic appendectomy were included in this prospective study. Closure of the appendix base was generally intended with a titanium double-shanked clip (DS-Clip). The variables of interest were intra-and postoperative complications, operation time and hospital stay. Furthermore, an evaluation of the clip's practicability by the surgeon was performed using a standardised questionnaire.

Results

In 104 patients screened intraoperatively, four patients had to be excluded as the operating surgeon felt that the clip was not adequate for closing the stump, generally because of severe inflammation of the base of the appendix with involvement of the caecum. One patient developed an intra-abdominal abscess which had to be drained interventionally; no reoperations were necessary. The overall complication rate, the operation time and the hospital stay were well comparable with other devices for appendix stump closure such as staplers, loops or polymeric clips. The practicability of the clip was mainly rated as excellent or good by the operating surgeons.

Conclusion

This study suggests that the presented titanium DS-Clip is a safe and cost-effective technique for securing the appendix base in laparoscopic appendectomy. The application is easy and can be learned quickly, making it a good option also for teaching hospitals.

Tissue reaction to absorbable endoloop, nonabsorbable titanium staples, and polymer Hem-o-lok clip after laparoscopic appendectomy

BACKGROUND AND OBJECTIVES

The standard technique for securing the base of the appendix during laparoscopic appendectomy is by absorbable endoloop ligature, although clinical reports favor the use of the stapler. Nonabsorbable Hem-o-lok clips have been shown to be an alternative technique to this. However, it is currently not clear whether nonabsorbable clips have any effects on the intestine or promote infection in the surgical area.

MATERIALS AND METHODS

Sixty Wistar albino rats were randomized into 3 treatment groups: group I (n=20) the base of the appendix was secured by endoloop 2-0 ligature; group II (n=20) dissection of the appendix was performed by a 45-mm thick stapler; and group III (n=20) the base of the appendix was secured by a Hem-o-lok plastic clip. The animals were sacrificed on the 14th and 28th days after surgery. The secured stump was used for histopathological examination.

RESULTS

There were no significant differences in histopathological changes observed on the 14th postoperative day between the groups. On the 28th postoperative day, it was proved that mild and moderate inflammation is more frequent in the endoloop and Hem-o-lok groups than in the stapler group. Reaction to a foreign body is more frequent in the endoloop than in stapler and Hem-o-lok groups.

CONCLUSION

The mildest postoperative inflammatory changes were seen in the stapler group, followed by the Hem-o-lok group. However, because of the price of the plastic clip and the simplicity of its application, its use is still favored during laparoscopic appendectomy.

A prospective analysis of endoloops and endostaples for closing the stump of the appendix in children

AIM

The aim of this study was to compare endoloops and endostaples for closing the stump of the appendix during laparoscopic appendectomy (LA) for uncomplicated appendicitis in children.

METHODS

All LA performed for appendicitis from 2005 to 2009 were analyzed prospectively. Cases of complicated appendicitis such as perforated appendicitis or intra-abdominal abscess were excluded, leaving 75 cases closed with loops and 81 cases closed with staples. Choice of technique was determined by the attending surgeon's preference. All patients were managed according to the same pre-, intra-, and postoperative protocols.

RESULTS

There were no significant differences between mean age at surgery, gender ratio, preoperative mean white blood cell count and mean C-reactive protein, histopathologic findings, mean duration of surgery, and mean hospitalization. There were no intra-operative complications in either group, but one loop case required conversion to open surgery (P = NS). There were no significant differences in the incidences of intra-abdominal abscess, transient ileus, small bowel obstruction, and wound infection. The postoperative readmission rate for management of complications was 4.0% for loop cases and 2.5% for staple cases (P = NS). Overall, using staples for a standard LA (anesthesia and stump closure) was U.S. $405 more expensive than when loops were used.

CONCLUSION

This is the first prospective study comparing endoloops with endostaples for closing the stump of the appendix during LA for uncomplicated appendicitis in children. Although stapling proved to be more expensive, the choice of technique should reflect the surgeon's experience and confidence to ensure that the patient has the safest possible LA.