Laparoendoscopic single-site surgery versus standard laparoscopic simple nephrectomy: a prospective randomized study

Long-Term Outcomes of Single-Incision Distal Gastrectomy Compared with Conventional Laparoscopic Distal Gastrectomy: A Propensity Score-Matched Analysis

BACKGROUND

Single-incision laparoscopic surgery is gaining more attention due to advancements in surgical devices and techniques. Ten years have passed since the first report of single-incision distal gastrectomy. This study aims to analyze the long-term oncological safety of single-incision distal gastrectomy by comparing it with multiport distal gastrectomy.

STUDY DESIGN

Patients diagnosed with gastric cancer who underwent laparoscopic distal gastrectomy from January 2010 to December 2017 were enrolled. Palliative surgery, history of other malignancy, preoperative chemotherapy, and distant metastasis were excluded. The 5-year overall survival and 5-year disease-free survival were set as coprimary endpoints. Operative time, blood loss, postoperative outcome, and risk factors for survival were secondary endpoints. Propensity score matching of 1:1 ratio was performed to adjust for age, sex, body mass index, comorbidities, tumor size, operation history, and clinical stage.

RESULTS

A total of 3,097 patients were enrolled. After propensity score matching, 378 patients were allocated to each group. There was no difference in patient demographics after matching. Operation time was faster (170.8 ± 65.3 minutes vs 147.2 ± 44.1 minutes, p < 0.001), with less blood loss in the single-port group (84.1 ± 87.6 mL vs 34.9 ± 49.9 mL, p < 0.001). Administration of additional intravenous analgesics was less frequent in the single-port group (p = 0.043). There was no difference in long-term survival (5-year overall survival: multiport 94.2%, single-port 95.8%, p = 0.43; 5-year disease-free survival: multiport 94.1%, single-port 95.8%, p = 0.32).

CONCLUSIONS

Single-incision distal gastrectomy is safe and feasible with good long-term outcomes and less use of additional analgesics for patients diagnosed with early gastric cancer.

Laparoendoscopic single-site simultaneous bilateral nephrectomy: first reported case series

Bilateral renal tumors in patients on dialysis are usually managed with bilateral nephrectomy. With traditional laparoscopy, this procedure requires the insertion of multiple trocars. Laparoendoscopic single-site surgery (LESS) uses a single umbilical incision to insert multiple instruments and is also employed for extraction of specimens. This technique appears especially useful for bilateral nephrectomy, since many access ports can be spared. We describe 5 cases of simultaneous bilateral radical nephrectomies performed at a single academic institution. We had no intraoperative complications and a mean operating time of 155 minutes. Four patients could be resected using this approach; one case was converted to a traditional laparoscopy. One case had a postoperative complication. We believe this technique is feasible, and can be accomplished with acceptable morbidity and ade-quate operative time.

Floating docking technique: a simple modification to improve the working space of the instruments during single-port robotic surgery

OBJECTIVE

To compare the range of motion and ergonomic characteristics of single-port robotic instruments in the setting of the "floating" versus "flat" docking technique using the GelPOINT^® system.

MATERIAL AND METHODS

The basic principle of the floating docking technique resides in the GelSeal cap and trocar (s) being 8 cm off the skin level with the Alexis^® acting as a conduit between the trocar (s) and the body while preserving insufflation. In the setting of a dry lab study, we measured the range of motion of one robotic instrument with the "floating" and the "flat" docking technique in two different situations depending on whether the distance between the incision and the target was more or less than 10 cm.

RESULTS

The minimum required distances between the target and the tip of the cannula for activation of the wrist and elbow were 5 and 10 cm, respectively. When the target was near to the cannula (i.e., less than 10 cm), the floating technique was associated with a significant increase in the range of motion of the instrument in all directions. The working space volume of the instrument was increased by more than 390% (from 101 to 497 cm³) when the surgeon switched from flat (standard) to the floating technique in the setting of a target close (i.e., less than 10 cm) to the cannula CONCLUSION: The floating docking technique is a simple and effective way to increase the working surgical space, especially in confined and narrow surgical fields with a target closer than 10 cm from the skin.

Technical advancements in robotic prostatectomy: single-port extraperitoneal robotic-assisted radical prostatectomy and single-port transperineal robotic-assisted radical prostatectomy

Background

To describe our step-by-step techniques for single-port robotic-assisted extraperitoneal and perineal radical prostatectomy as recent technical advancements in this field.

Methods

An English-language literature review was done using search terms including extraperitoneal, transperineal, single-port, robotic surgery, prostate cancer, radical prostatectomy in various combinations. Unique features of the da Vinci SP^® platform are discussed. Details of surgical techniques with single-port robotic platform are also covered.

Results

The relatively recent introduction of the da Vinci SP platform has led to the development of novel techniques for radical prostatectomy. Unique features of this platform including intracorporeal triangulation and double-articulating instruments will likely lead to widespread applications of this novel system. The principles of radical prostatectomy are reproducible with both extraperitoneal and perineal approaches via a single incision.

Conclusions

A better cosmetic results as well as a quick recovery maybe potential advantages of single-port extraperitoneal/transperineal robotic prostatectomy. By avoiding the peritoneal cavity, a lower rate of bowel related complications and minimum systemic CO₂ absorption can be expected. Adverse effects of steep Trendelenburg positioning can be avoided with these techniques. Evaluation of the oncological and functional outcomes of these techniques will be necessary. Comparative trials with standard robotic surgery and cost-analysis studies remain hot topics for research after implementation of these new platforms at any institute.

Laparoendoscopic single-site nephrectomy with the aid of intraabdominal retractors

OBJECTIVES

To evaluate the feasibility and clinical efficacy of a novel intraabdominal retractor device in laparoendoscopic single-site nephrectomy(LESS-N).

METHODS

Between February 2012 and February 2017, 98 patients underwent LESS-N in our institution, including 38 patients with benign renal disease and 60 patients with malignant renal disease. 39 were performed conventional LESS-N(C-LESS-N) and 59 were performed intraabdominal retractor-assisted LESS-N(IAR-LESS-N). Demographic data, and perioperative and postoperative data were collected and analyzed retrospectively.

RESULTS

All the procedures were completed successfully. In C-LESS-N group, four patients were added one 5-mm additional trocar and two patients were converted to open surgery. In IAR-LESS-N group, no patients required additional trocars or conversion to open surgery. The mean operative time was lower in IAR-LESS-N group than that in C-LESS-N group (94.2 min vs 127.4 min, P < 0.05). The mean renal vascular management time declined from 25.4 min in C-LESS-N group to 18.4 min in IAR-LESS-N group (P < 0.05). The mean estimated blood loss was 128.6 ml in C-LESS-N group and 102.3 ml in IAR-LESS-N group (P < 0.05). Two patients in C-LESS-N group required blood transfusion, while none of the patients in IAR-LESS-N group did. No severe postoperative complications occurred in both groups. Study limitations included retrospective study, short follow-up, and accumulated surgical experience and skills.

CONCLUSIONS

Intraabdominal retractors allow performance of LESS-N with improved working space, quicker renal hilar management, and shortened total operative time. It is expected that the application of intraabdominal retractors, along with the new robotic platform might revive LESS and translate into a renewed future interest of LESS.

Longitudinal analysis of laparoendoscopic single-site adrenalectomy and conventional laparoscopic adrenalectomy regarding patient-reported satisfaction and cosmesis outcomes

BACKGROUND/OBJECTIVE

To compare longitudinal patient-reported cosmesis of laparoendoscopic single-site adrenalectomy (LESS-A) to that of conventional laparoscopic adrenalectomy (CLA).

METHODS

A total of 23, 15, and 9 patients underwent transumbilical LESS-A (TU-LESS), subcostal LESS-A (SC-LESS), and CLA, respectively. A questionnaire was administered asking the patient to assess wound pain (0: not painful to 10: very painful), satisfaction (0: not satisfied to 10: very satisfied), and cosmesis (0: very ugly to 10: very beautiful) on the basis of a visual analogue scale. We mailed questionnaires to all patients who received LESS-A and CLA at postoperative 1, 3, 6, 9, and 12 months.

RESULTS

No significant differences were observed in the pain scores between TU-LESS, SC-LESS, and CLA at every time point. In the CLA group, the cosmesis and satisfaction scores were significantly lower at postoperative 3 months (p = 0.0033, 0.0130). There were no significant inter-group differences in the cosmesis score between the three groups after postoperative 6 months. However, the satisfaction score of SC-LESS decreased after postoperative 3 months and was significantly lower at postoperative 9 and 12 months (p = 0.0333, 0.0160). The difference between the satisfaction scores of each procedure gradually increased after postoperative 6 months.

CONCLUSION

This study is the first comprehensive longitudinal analysis of patient-reported satisfaction and cosmesis outcomes between LESS-A and CLA. The resulting data provide important insights into the improvement in satisfaction in patients who underwent TU-LESS. These findings can facilitate the treatment decision-making process for patients who are considering laparoscopic adrenalectomy.

Comparative study of multiport laparoscopy and umbilical laparoendoscopic single-site surgery with reusable platform for treating renal masses

INTRODUCTION

Umbilical laparoendoscopic single-site (LESS) surgery is an increasingly used modality for treating renal masses. We present a prospective comparison between LESS renal surgery and conventional laparoscopy.

MATERIAL AND METHOD

A comparative paired study was conducted that evaluated the surgical results and complications of patients with renal neoplasia treated with LESS surgery (n=49) or multiport laparoscopy (n=53). The LESS approach was performed with reusable material placed in the navel and double-rotation curved instruments. An additional 3.5-mm port was employed in 69.4% of the cases. We assessed demographic data, the type of technique (nephrectomy, partial nephrectomy and nephroureterectomy), surgical time, blood loss, haemoglobin, need for transfusion, number and severity of complications (Clavien-Dindo), hospital stay, histological data and prognosis.

RESULTS

There were no differences in follow-up, age, sex, body mass index, preoperative haemoglobin levels or type of surgery. Conversion occurred in 2 cases (1 in each group). The surgical time was equivalent (P=.6). Intraoperative transfusion (P=.03) and blood loss (P<.0001) was lower with LESS, postoperative haemoglobin levels were higher (P<.0001) and haemostatic agents were used more frequently (P<.0001). There were no differences in the number (P=.6) or severity (P=.47) of complications. The length of stay (P<.0001), the proportion of patients with drainage (P=.04) and the number of days with drainage (P=.0004) were lower in LESS. Twenty-five percent of the lesions operated on with LESS were benign, but the mean size was similar in the 2 groups (P=.5). Tumour recurrence and/or progression were more frequent in multiport laparoscopy (P=.0013).

CONCLUSIONS

Umbilical LESS surgery with reusable platform enables various surgical techniques to be performed when treating renal masses, with time consumption and safety comparable to conventional laparoscopy. The LESS approach is advantageous in terms of blood loss and hospital stay.

Percutaneous Externally Assembled Laparoscopic vs Laparoendoscopic Single-Site Nephrectomy in a Porcine Model: A Prospective, Randomized, Blinded, Study

OBJECTIVE

To compare the outcomes between laparoendoscopic single-site (LESS) and a novel percutaneous externally assembled laparoscopic (PEAL) nephrectomy in an in vivo porcine model.

MATERIALS AND METHODS

Ten female farm pigs were randomized to LESS nephrectomy (5) or PEAL nephrectomy (5). Operative times, estimated blood loss, and intraoperative and postoperative complications were compared. The surgeons used a Likert scale to grade difficulty of peritoneal access, port placement, tool assembly, hilar dissection, closure, and overall difficulty of surgery. Scar assessment was performed by a blinded plastic surgeon using the Vancouver Scar Scale. Descriptive statistics were reported as median and range. The Mann-Whitney U test was used for continuous and ordinal variables. A p value <0.05 was considered significant.

RESULTS

Median operative time was significantly shorter in the PEAL group vs the LESS group (85 minutes vs 127 minutes, p = 0.03). Median Likert scores showed overall hilar dissection and nephrectomy to be significantly easier using PEAL compared with LESS (2 vs 9, p < 0.01 for both). The PEAL instruments left no visible scar at 5 feet in any animal, and only 1 out of 10 scars could be identified on physical examination.

CONCLUSIONS

The PEAL surgical paradigm demonstrates nearly scarless outcomes while providing shorter operative times and easier performance than LESS nephrectomy in a porcine model.

Laparoendoscopic single-site surgeries: A multicenter experience of 469 cases in Japan

OBJECTIVE

To report on a multi-institutional series of non-robotic urological laparoendoscopic single-site surgery in Japan.

METHODS

Consecutive cases of laparoendoscopic single-site surgery carried out between February 2009 and December 2012 at nine academic institutions were included. We examined the surgical outcomes, including conversion and complications rates.

RESULTS

Four hundred and sixty-nine cases were included in the analysis. The most common procedure was adrenalectomy (n = 177) and the second most common procedure was radical nephrectomy (n = 143). The procedures also included nephroureterectomy (n = 40), living donor nephrectomy (n = 40), pyeloplasty (n = 30), urachal remnant excision (n = 9), simple nephrectomy (n = 7), radical prostatectomy (n = 6) and others (n = 17). The access sites included umbilicus (n = 248, 53%) and other sites (n = 221, 47%). A transperitoneal approach was used in 385 cases (82%), and retroperitoneal approach in 84 cases (18%). The median operation time of all procedures was 198 min. Conversion to reduced port surgery, conventional laparoscopy, or open surgery was noted in 27 cases (5.8%), 12 cases (2.6%), and two cases (0.4%), respectively, with an overall conversion rate of 8.7%. Intraoperative complications occurred in 10 cases (2.1%). Post-operative complications were noted in 29 cases (6.2%), including five major complications (1.1%). No mortality was recorded in this series.

CONCLUSIONS

Non-robotic laparoendoscopic single-site surgery is technically feasible and safe for various urologic diseases in Japan. Furthermore, urological laparoendoscopic single-site surgery is a promising minimally invasive surgical option that is feasible for experienced urological surgeons in intermediate-volume centers as well as high-volume centers.

Comparative analysis of outcomes after multiport and single-port laparoscopic colectomy in emergency situations: Is single-port laparoscopic colectomy safe and feasible?

BACKGROUND/OBJECTIVE

Although consensus has been reached on the superiority of laparoscopy for a majority of conditions underlying acute abdominal pain, the safety and feasibility of single-port laparoscopic colectomy (SPLC) in emergency situations have not been determined.

METHODS

A prospective electronic database of all emergency patients who underwent either multiport laparoscopic colectomy (MPLC) or SPLC between April 2006 and December 2014 was used to compare the surgical outcomes of these operative methods.

RESULTS

During the study period, 31 MPLCs and 76 SPLCs were performed. These two operative methods resulted in similar operating times, transfusion amounts, lengths of stay, postoperative complications, attainment of lymph nodes, and proximal and distal cut margins. However, the SPLC group had a shorter time to first flatus (2.8±1.9 days vs. 3.8±1.5 days, p=0.005), earlier reinitiation of free oral fluids (3.2±2.1 days vs. 4.4±1.8 days, p=0.002), and lesser requirement of narcotic analgesics (2.5±3.9 times vs. 4.7±4.8 times, p=0.017).

CONCLUSION

SPLC could be a safe and effective alternative to MPLC, even in emergency situations when performed by surgeons who have overcome the learning curve associated with single-port laparoscopic techniques. The tendency toward earlier returns to bowel function and decreased incidence of postoperative analgesic use would be potential benefits of SPLC in emergency situations.

Laparoendoscopic single-site donor nephrectomy (LESS-DN) versus standard laparoscopic donor nephrectomy

BACKGROUND

Advances in minimally invasive surgery for live kidney donors have led to the development of laparoendoscopic single site donor nephrectomy (LESS-DN). At present, laparoscopic donor nephrectomy is the technique of choice for donor nephrectomy globally. Compared with open surgical approaches, laparoscopic donor nephrectomy is associated with decreased morbidity, faster recovery times and return to normal activity, and shorter hospital stays. LESS-DN differs from standard laparoscopic donor nephrectomy; LESS-DN requires a single incision through which the procedure is performed and donor kidney is removed. Previous studies have hypothesised that LESS-DN may provide additional benefits for kidney donors and stimulate increased donor rates.

OBJECTIVES

This review looked at the benefits and harms of LESS-DN compared with standard laparoscopic nephrectomy for live kidney donors.

SEARCH METHODS

We searched the Cochrane Kidney and Transplant's Specialised Register to 28 January 2016 through contact with the Information Specialist using search terms relevant to this review.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) that compared LESS-DN with laparoscopic donor nephrectomy in adults.

DATA COLLECTION AND ANALYSIS

Three authors independently assessed studies for eligibility and conducted risk of bias evaluation. Summary estimates of effect were obtained using a random-effects model and results were expressed as risk ratios (RR) or risk difference (RD) and their 95% confidence intervals (CI) for dichotomous outcomes, and mean difference (MD) and 95% CI for continuous outcomes.

MAIN RESULTS

We included three studies (179 participants) comparing LESS-DN with laparoscopic donor nephrectomy. There were no significant differences between LESS-DN and laparoscopic donor nephrectomy for mean operative time (2 studies, 79 participants: MD 6.36 min, 95% CI -11.85 to 24.57), intra-operative blood loss (2 studies, 79 participants: MD -8.31 mL, 95% CI -23.70 to 7.09), or complication rates (3 studies, 179 participants: RD 0.05, 95% CI -0.04 to 0.14). Pain scores at discharge were significantly less in the LESS-DN group (2 studies, 79 participants: MD -1.19, 95% CI -2.17 to -0.21). For all other outcomes (length of hospital stay; length of time to return to normal activities; blood transfusions; conversion to another form of surgery; warm ischaemia time; total analgesic requirement; graft loss) there were no significant differences observed.Although risk of bias was assessed as low overall, one study was assessed at high risk of attrition bias.

AUTHORS' CONCLUSIONS

Given the small number and size of included studies it is uncertain whether LESS-DN is better than laparoscopic donor nephrectomy. Well designed and adequately powered RCTs are needed to better define the role of LESS-DN as a minimally invasive option for kidney donor surgery.

Laparoendoscopic single-site simple nephrectomy using a magnetic anchoring system in a porcine model

Purpose

Magnetic anchoring devices may reduce the number of port sites needed in laparoscopic surgery. In this study, we prospectively assessed the feasibility of using a magnetic anchoring and guidance system (MAGS) in laparoendoscopic single-site (LESS) surgery performed by novices.

Materials and Methods

A total of 10 LESS simple nephrectomies were performed with or without MAGS in a nonsurvival porcine model by 6 operators with no previous LESS surgery experience. After installation of the homemade single port, an intra-abdominal magnet was fixed to the renal parenchyma with suturing and stabilized by an external magnet placed on the flank so that the position of the kidney could be easily changed by moving the external handheld magnet. The length of the procedure and any intraoperative complications were evaluated.

Results

Operative time (mean±standard deviation) was shorter in the group using the magnetic anchoring device (M-LESS-N) than in the group with conventional LESS nephrectomy (C-LESS-N) (63±20.8 minutes vs. 82±40.7 minutes, respectively). Although all nephrectomies were completed uneventfully in the M-LESS-N group, renal vein injury occurred during dissection of the renal hilum in two cases of C-LESS-N and was resolved by simultaneous transection of the renal artery and vein with an Endo-GIA stapler.

Conclusions

LESS-N using MAGS is a feasible technique for surgeons with no LESS surgery experience. Taking into account the 2 cases of renal vein injury in the C-LESS-N group, the application of MAGS may be beneficial for overcoming the learning curve of LESS surgery.

Upper Tract Urological Laparoendoscopic Single-Site Surgery (LESS)

BACKGROUND AND OBJECTIVES

Our objective is to report intermediate-term outcomes for patients who have undergone upper tract urologic laparoendoscopic single-site surgery (LESS) at a single institution.

METHODS

From January 1, 2008, through November 30, 2012, 107 cases treated with LESS were identified, including pyeloplasty (n = 30), ureterolithotomy (n = 32), nephrectomy (n = 35; simple = 31, partial = 4), and cyst decortication (n = 10). Perioperative data were reviewed, and conversion and complication rates were noted.

RESULTS

The median follow-up was 21.5 months for pyeloplasty, 20.5 for ureterolithotomy, 28.0 for simple nephrectomy, 14.0 for partial nephrectomy, and 19.0 for cyst decortication. Major complications were encountered in 8 patients, including 3 intraoperative complications (2 bowel injury with serosal tearing and 1 intraoperative bleeding), which were recognized and repaired with LESS or conversion to conventional laparoscopy (CL). During the intermediate postoperative period (30-90 days) major complications occurred in 5 patients: 4 ureteral strictures (Clavien-Dindo grade [CG] IIIb) and 1 urinoma formation (CG IIIa). During the early postoperative period (<30 days), the most common minor complications were flank pain (CG I) in 16 patients and urinary tract infection (CG II) in 11, followed by urinary leakage (CG I) in 8.

CONCLUSIONS

Intermediate-term functional outcomes of this single-center study confirm that upper tract LESS is a challenging procedure that can be safe and effective when performed by an experienced team. Prospective studies with longer follow-up periods are needed to investigate the safety of LESS in the treatment of various upper urinary tract conditions.

Two-Port Approach Compared to Standard Laparoscopic Radical Cystectomy

BACKGROUND AND OBJECTIVES

Two-port laparoscopic radical cystectomy (LRC) using a multichannel platform through the umbilicus and one additional 10-mm in the right iliac fossa has been recently described. We compare the perioperative and early results of this technique with a cohort of patients simultaneously treated in our institution with four-port LRC and a 7 to 10 cm midline incision.

MATERIALS AND METHODS

A matched-pair study comparing perioperative outcomes, postoperative visual analog pain scale (VAPS), and morbidity of two-port (n=30) and four-port (n=30) LRC. Preoperative and perioperative data analyzed and compared included demographics, type of urinary diversion, operative time, blood loss, transfusion requirements, decrease in serum hemoglobin, operative complications, analgesic needs, length of stay, number of nodes removed, and other pathologic information. Complications in the first 3 months were evaluated according to the Clavien-Dindo classification.

RESULTS

There was no significant difference between the two groups regarding patient age, gender, body-mass index, American Society of Anesthesiologists (ASA) score, Charlson comorbidity index, tumor stage, percent of positive nodes, positive margin rate, number of nodes retrieved, proportion of neobladders, secondary carcinoma in situ, incidental prostate cancer, or need of systemic chemotherapy. Median operative time was 20 minutes higher in the two-port procedure, but this difference was not statistically significant (p=0.2). Estimated blood loss and differential hemoglobin change were lower in the two-port technique (each p=0.03), but no difference was detected regarding the intraoperative or postoperative transfusion rate. Length of hospital stay was also equivalent. Differences were not observed either in the number or severity of complications. VAPS at days 2, 3, and 5 was significantly lower for two-port LRC (p<0.01).

CONCLUSIONS

Two-port LRC performed through an umbilical platform and an accessory 10-mm port seems technically equivalent to standard four-port LRC. Perioperative outcomes regarding hospital stay and complications are tantamount. Diminished blood loss and, especially, less postoperative pain favor the reduced-port approach in this complex urologic minimally invasive procedure.

The best option: Umbilical LESS radical nephrectomy with vaginal extraction

INTRODUCTION

Umbilical laparoendoscopic single-site (LESS) surgery represents an excellent alternative to laparoscopic or robotic multiport surgery. LESS surgery offers faster recovery, less postoperative pain and optimal cosmetic results. The reusable nature of its instruments also has significant economic advantages.

PATIENT AND METHOD

We present a 34-year-old patient with a solid mesorenal lesion measuring 8 cm in the left kidney treated with pure LESS radical nephrectomy assisted by vaginal extraction of the specimen. The umbilical approach using a single-site multichannel KeyPort (Richard Wolf GmbH, Knittlingen, Germany) with DuoRotate curved instruments allows for minimum crushing and fewer spatial conflicts. Its perfect umbilical adaptation provides a hermetic system. The instrument's double rotation provides considerable movement precision. Vaginal extraction avoids damage to the abdominal wall and the need for widening the umbilical incision.

RESULTS

After the placement of the device and triangulation of the clips, we proceeded to operate on posterior parietal peritoneum. The descending colon was mobilized to access the retroperitoneum and dissect the renal hilum. Hem-o-lok clips were placed on the artery and vein, which were subsequently sectioned. The specimen was inserted into a laparoscopic bag. Under direct vision, we placed a 15-mm trocar through the bottom of the vaginal posterior fornix to facilitate the extraction of the bag's thread. The incision was widened with the fingers, and the specimen was extracted, closing the vagina from the perineum with visualization from the navel. Abdominal drainage was not employed. The surgical time was 180 min. The patient was discharged the following day without needing analgesia. A year later, the patient was disease-free and had no complications.

CONCLUSIONS

Umbilical LESS radical nephrectomy with vaginal extraction is feasible in selected cases. The procedure is oncologically safe, avoids scars and facilitates early recovery. From a practical point of view, this approach greatly simplifies natural orifice transluminal endoscopic surgery (NOTES) and enables a minimally invasive equivalent result.

Population perception of surgical approach in minimally invasive surgery

INTRODUCTION

The aim of this study was to better understand the impact that public opinion might have on surgical approaches in urologic minimally invasive surgery (MIS).

METHODS

We collected surveys from 400 participants, including the general population (n = 220) and paramedical staff (n = 180). Participants were anonymous. The survey included 16 questions on the characteristics and preference for the surgical approach if a urologic MIS were performed on them.

RESULTS

The responders preferred the transumbilical approach (57.0%) to the subcostal approach (43.0%). In particular, the preference for a transumbilical approach was significantly higher in females (65.1% vs. 49.3%, p = 0.0014). Similarly, when participants were divided into two groups (<50 years and ≥50 years), the preference for the transumbilical approach was significantly higher in the younger group (60.8% vs. 48.0%, p = 0.0187). Logistic regression analysis revealed that preference for this approach was about 2 times more likely to rise in the females (p = 0.032).

CONCLUSIONS

Preference for the transumbilical approach was significantly higher young female respondents. This patient subset most values the cosmetic benefits of transumbilical approach in urologic MIS.

Single port/incision laparoscopic surgery compared with standard three-port laparoscopic surgery for appendicectomy: a randomized controlled trial

BACKGROUND AND OBJECTIVE

The aim of this study was to compare the effectiveness of single port/incision laparoscopic surgery (SPILS) with standard three-port laparoscopic surgery for appendicectomy in adults. Feasibility data was collected to evaluate generalizability to other single-port techniques such as cholecystectomy.

METHODS

This was a single-center, randomized controlled trial. Participants were randomized to receive either SPILS or standard three-port laparoscopic appendicectomy. The primary patient-reported outcomes were body image and cosmesis at 6 weeks. The primary clinical outcome was pain at 1-7 days. Secondary outcomes included duration of operation, conversion rates, complication rates, use of analgesia, hospital re-admission rates, re-operation rates, and time to return to normal activities.

RESULTS

Seventy-nine patients were randomized. Sixty-seven completed the day 1-7 diary and 53 completed the 6-week follow-up. SPILS patients answered significantly more favorably to the items in the body image scale [mean (SD) 5.6 (1.0) vs. 7.0 (3.3); -1.4 (95 % CI -2.8 to 1.5; p = 0.03)] and the cosmetic scale [18.9 (4.1) vs. 15.3 (5.8); 3.6 (95 % CI 0.7-6.5; p = 0.016)] compared with patients in the Standard group. The duration of operation was shorter for SPILS, and patients required less morphine in recovery; however, there were no statistically significant differences in other outcomes.

CONCLUSIONS

Patient-reported body image and cosmesis outcomes were better, and surgical outcomes were similar following SPILS. However, the SPILS procedure is more technically demanding and may not be achievable or necessary in routine clinical care. Further assessment of the findings is needed through larger multicenter studies.

Trends in surgical management of T1 renal cell carcinoma

Historically, open radical nephrectomy (ORN) represented the standard of care for localized renal cell carcinoma (RCC). While the incidence of T1 RCC is rising, treatment options are developing fast and the standard of care according to European and American guidelines has changed to partial nephrectomy (PN), or laparoscopic radical nephrectomy in patients not suitable for PN. To assess the implementation of guideline recommendations and to profile recent surgical and technical innovations, we reviewed the current literature. We observed that ORN still represents the most commonly used treatment in T1 RCC patients. Utilization of PN increased over time but implementation is still in progress. Whereas PN is frequently used in tertiary care centers, population-based studies suggest discrepancies in the diffusion of standard of care treatments. Alternative minimally invasive approaches for PN are available but their superiority is not yet proven. Further efforts in improving the training of urologic surgeons are required to continue the implementation of guideline recommendations.

Laparoendoscopic single-site retroperitoneoscopic nephrectomy for giant hydronephrosis

PURPOSE

To report our experience and assess the feasibility and safety of laparoendoscopic single-site (LESS) retroperitoneoscopic nephrectomy for giant hydronephrosis.

PATIENTS AND METHODS

Between July 2011 and April 2013, 22 patients underwent LESS retroperitoneoscopic nephrectomy for giant hydronephrosis with nonfunctioning kidneys. A reusable elastic single-port device was inserted through the 2.5-cm incision at the midpoint between the costal arch and iliac crest on the midaxillary line. A rigid, 10-mm, 30° extra-long laparoscope was introduced for monitoring, and a combination of lengthened prebent and conventional laparoscopic instruments was used for handling. The operation procedure was similar to the conventional retroperitoneal laparoscopic nephrectomy.

RESULTS

LESS retroperitoneoscopic nephrectomy was completed in all patients without conversion to open surgery and the additional placement of ports. The mean operative time was 98 minutes (range 77-146), and estimated blood loss was 45 mL (range 20-120). No major intraoperative complications occurred. The postoperative period was uneventful in all patients and the mean hospital stay was 3.4 days (range 2-7).

CONCLUSIONS

LESS retroperitoneoscopic nephrectomy for giant hydronephrosis is technically feasible and safe for selected patients. The combination of conventional and prebent laparoscopic instruments represents an attractive option for retroperitoneoscopic LESS.

Transumbilical multiport laparoscopic nephrectomy with specimen extraction through the vagina

OBJECTIVES

To report our initial experience with transumbilical multiport laparoscopic nephrectomy (TMLN) with transvaginal specimen extraction.

PATIENTS AND METHODS

Between January and July 2010, 5 married and parous female patients were submitted to TMLN with transvaginal specimen extraction in our center. All data referring to patient demographics, surgery, pathology and perioperative outcomes were recorded. Sexual function was assessed with the Female Sexual Function Index questionnaire before and after surgery. The cosmetic result was investigated by administering the Patient Scar Assessment Questionnaire and Scoring System (PSAQ).

RESULTS

All procedures were completed successfully. The mean operative time was 136 min (range 110-160 min, standard deviation [SD] 20.7). The mean estimated blood loss was 66 ml (range 40-100 ml, SD 24.1). The mean postoperative hospitalization stay was 4.8 days (range 4-6 days, SD 0.8). All patients reported unaltered sexual function after surgery. The better cosmetic results were confirmed by the PSAQ score.

CONCLUSIONS

TMLN with transvaginal specimen extraction is feasible and safe for married and parous female patients. This technique is a natural evolution towards natural orifice transluminal endoscopic surgery (NOTES). By acting as an intermediate-type procedure, it provides a bridge through which NOTES may ultimately gain clinical acceptance.

Comparison of Cosmetic Outcome Between Single-Incision Laparoscopic Cholecystectomy and Conventional Laparoscopic Cholecystectomy in Rural Indian Population: A Randomized Clinical Trial

Persistent efforts are being made to reduce operative trauma and morbidity and to improve cosmesis following laparoscopic cholecystectomy. The trend is to reduce the number of incisions, and thus single-incision laparoscopic cholecystectomy (SILC) and natural orifice endoscopic surgery (NOTES) are becoming popular. There is a paucity of studies pertaining to cosmetic outcome after SILC and conventional laparoscopic cholecystectomy in rural Indian population. In the present study, the cosmetic outcome of SILC versus conventional laparoscopic cholecystectomy (CLC) in rural Indian population was evaluated. Sixty patients with gallstone disease were randomly assigned to two groups. In group A (n = 30), CLC was performed, while group B (n = 30) was subjected to SILC. The cosmetic outcome was evaluated using a body image questionnaire on the 7th and 30th postoperative days. On the 7th postoperative day, the body image score for SILC was 6.23 ± 0.89 and for CLC, 8.26 ± 1.08 (p < 0.0001), while the cosmetic score for SILC was 19.56 ± 1.07 and for CLC, 15 ± 1.20 (p < 0.0001). On the 30th postoperative day, the body image score for SILC was 5.50 ± 0.68 and for CLC, 8 ± 1.31 (p < 0.0001), while the cosmetic score for SILC was 21.13 ± 0.57 and for CLC, 15.63 ± 1.06 (p < 0.0001), which favored SILC over CLC. The patient perception and acceptance of SILC was better than that of CLC in terms of cosmetic outcome.

Overview of single-port laparoscopic surgery for colorectal cancers: Past, present, and the future

Single-port laparoscopic surgery (SPLS) is implemented through a tailored minimal single incision through which a number of laparoscopic instruments access. Introduction of operation-customized port system, utilization of a camera without a separate external light, and instruments with different lengths has brought the favorable environment for SPLS. However, performing SPLS still creates several hardships compared to multiport laparoscopic surgery; a single-port system inevitably leads to clashing of surgical instruments due to crowding. To overcome such difficulties, investigators has developed novel concepts and maneuvers, including the concept of inverse triangulation and the maneuvers of pivoting, spreading out dissection, hanging suture, and transluminal traction. The final destination of SPLS is expected to be a completely seamless operation, maximizing the minimal invasiveness. Specimen extraction through the umbilicus can undermine cosmesis by inducing a larger incision. Therefore, hybrid laparoscopic technique, which combined laparoscopic surgical technique with natural orifice specimen extraction - i.e., transvaginal or transanal route-, has been developed. SPLS and NOSE seemed to be the best combination in pursuit of minimal invasiveness. In the near future, robotic SPLS with natural orifice transluminal endoscopic surgery’s way of specimen extraction seems to be pursued. It is expected to provide a completely or nearly complete seamless operation regardless of location of the lesion in the abdomen.

Patient-reported satisfaction and cosmesis outcomes following laparoscopic adrenalectomy: Laparoendoscopic single-site adrenalectomy vs. conventional laparoscopic adrenalectomy

INTRODUCTION

We evaluate patient-reported satisfaction and cosmesis of laparoendoscopic single-site adrenalectomy (LESS-A) in comparison with that of conventional laparoscopic adrenalectomy (CLA).

METHODS

A total of 19 and 104 patients who respectively underwent LESS-A and CLA between May 1996 and June 2011 were included in the study. Questionnaires inquiring about scar pain (0: not painful, 10: very painful), satisfaction (0: not satisfied, 10: very satisfied) and cosmesis (0: very unsightly, 10: very beautiful) on the basis of a visual analogue scale were sent to patients postoperatively.

RESULTS

The respondents consisted of 11 and 54 patients who underwent LESS-A and CLA, respectively. There was no significant inter-group difference in age, sex, affected side or body mass index. No significant differences were observed in operative time or estimated blood loss. There were also no significant differences in pain (0.67 vs. 0.57, p = 0.393), satisfaction (8.92 vs. 8.46, p = 0.453), or cosmesis score (8.58 vs. 8.00, p = 0.487) between the LESS-A and CLA groups overall. In female patients, the satisfaction score was significantly higher in the LESS-A group than in the CLA group (10.0 vs. 8.72, p = 0.049). In young patients (<50 years old), the satisfaction score was also significantly higher in the LESS-A group than in the CLA group (9.17 vs. 6.38, p = 0.036).

CONCLUSIONS

Young patients and female patients who had received LESS-A adrenal surgery were more satisfied with the scar outcomes than were the young patients and female patients who had received CLA. We suggest that this patient subset most values the cosmetic benefits of LESS-A.

Umbilical laparoendoscopic urological surgery with a novel reusable device

OBJECTIVE

The aims of this study were to present cumulative experience with umbilical laparoendoscopic urological surgery using a reusable device and to evaluate outcomes and complications in the first 100 patients.

MATERIAL AND METHODS

Patients undergoing umbilical surgery with the KeyPort system and DuoRotate instruments (Richard Wolf, Knittlingen, Germany) were evaluated prospectively. Demographic, intraoperative and postoperative data were assessed.

RESULTS

Between October 2011 and July 2012, 79 pelvic (66 radical prostatectomy, 10 radical cystectomy, one diverticulectomy, one bilateral orchiectomy, one ureter reimplantation) and 21 renal (seven radical nephrectomy, six partial nephrectomy, five nephroureterectomy, two pyeloplasty, one pyelolithotomy) surgeries were performed through the umbilicus using this platform. Follow-up was 56.7 ± 12.6 weeks (mean ± SD). Mean age was 64.3 ± 10.3 years, body mass index 29 ± 4.6 kg/m(2), operative time 232 ± 106 min and estimated blood loss 260 ± 95 ml. Conversion to standard multiport laparoscopy was not necessary. An accessory port was used in 87 cases to facilitate suturing and conduct drainage extraction. Postoperative complications occurred in 24 cases (six Clavien grade I, 12 grade II, one grade IIIa, two grade IIIb, two grade IVa, one grade IVb). Mean hospital stay was 4.2 ± 4 days. Total transfusion rate was 10%. Mean visual analogue pain scale at day 2 was 2.1 ± 1.3 (0-10). Visual analogue wound satisfaction scale at month 1 was 9.2 ± 0.6 (0-10). No cancer-related events occurred during follow-up. Late complications (4%) were not related to the surgical approach.

CONCLUSIONS

Umbilical KeyPort surgery is technically feasible for a great variety of procedures, both ablative and reconstructive. This access offers adequate surgical outcomes, scarce postoperative pain and security for the patient in the short term. Its reusable nature implies a noticeable economic advantage.

Cost effective laparoendoscopic single-site surgery with a reusable platform

The authors found that laparoendoscopic single-site surgery with a reusable platform was feasible for various urologic entities, yielding favorable cosmetic and functional results.

Background and Objectives:

Many disposable platforms have been applied in laparoendoscopic single-site surgery (LESS). Besides technical issues, cost is one of the limiting factors for its widespread acceptance. The current study describes the first completely reusable LESS-platform.

Methods:

We performed LESS-procedures in 52 patients including nephrectomy (18), adrenalectomy (2), partial nephrectomy (3), pyeloplasty (4), renal cyst ablation (4), pelvic lymphadenectomy (15), and lymphocele ablation (6). All procedures were conducted using a novel reusable single-port device (X-Cone, Karl-Storz) with a simplified set of instruments. We obtained perioperative and demographic data, including a visual analogue pain scale (VAS), and a complication reporting system based on Clavien grading.

Results:

Mean age was 50.04 y. Conversion to standard laparoscopy was necessary in 3 cases and addition of a needlescopic instrument in 6 cases. There was no open conversion. Intra- and postoperative complications occurred in 3 (Clavien II in 2 and III in 1) cases. Mean operative time was 110, 90, and 89 min, and hospital stay was 4.9, 3.1, and 3.6 d for nephrectomy, pelvic lymphadenectomy, and pyeloplasty, respectively. Mean VAS was 2.13, 1.07, and 1.5 while blood loss was 81.3 mL, 25.67 mL, and 17.5 mL, respectively. Mean lymph node yield was 15 (range, 8 to 21).

Conclusions:

A completely reusable LESS-platform is applicable to various uses in urology, yielding favorable functional and cosmetic results. Reusable materials are useful to reduce the cost of LESS, further increasing its acceptance. LESS with a completely reusable platform is more cost effective than standard laparoscopy.

Laparoendoscopic single-site concomitant surgery for gallstones and a giant ovarian teratoma

Laparoendoscopic single-site (LESS) technique has gained popularity in several fields of surgery. Our patient had multiple gallstones and a left ovarian mature cystic teratoma 12 cm in diameter. She underwent concomitant laparoscopic cholecystectomy and adnectomy using LESS technique. Using a transient gasless technique resulted in the extraction of a giant ovarian tumor through the umbilical incision with no leakage into the abdominal cavity. Concomitant LESS surgery is feasible and has many benefits both for patients and doctors - cosmetics, possibly less pain, avoidance of multiple surgeries and cost-effectiveness. LESS technique is also useful for extracting a giant tumor with the transient gasless technique. This novel method might be applied to the removal of a tumor suspicious for malignancy.

Ergonomic principles and techniques in facilitating advanced laparoendoscopic single site (LESS) urinary tract reconstruction with conventional laparoscopic instruments

BACKGROUND/PURPOSE

The technical and ergonomic details of laparoendoscopic single site (LESS) reconstruction have not been reported. In this study, we explored the feasibility and safety of performing advanced LESS upper urinary tract reconstruction with conventional laparoscopic instruments.

METHODS

Between September 2010 and March 2011, we retrospectively reviewed prospectively collected data from five patients who underwent LESS urinary tract reconstruction. The LESS reconstruction included pyeloureterostomy (N = 1), dismembered pyeloplasty (N = 2), ureteroneocystostomy (N = 1), and ureteroplasty for bifid blind ending ureter (N = 1). The perioperative and postoperative parameters were collected for analysis. The ergonomic principles and techniques are detailed.

RESULTS

All reconstructive LESS procedures were completed successfully without open conversion or laparoscopic conversion. Ancillary ports or ancillary instruments were not applied in any of the patients. The mean patient age was 40.4 years. The mean operative time was 213 ± 69 minutes, the estimated blood loss ranged from minimal to 50 mL, and the mean hospital stay was 4.4 ± 4 days. No operation-related complication occurred.

CONCLUSION

Based on our ergonomic principles and suturing/knotting techniques, conventional laparoscopic instruments are feasible and safe for LESS urinary reconstructive procedures.

Analysis of postoperative pain in robotic versus traditional laparoscopic hysterectomy

The aim of this study was to assess postoperative pain and narcotic use in the first 23 h following robotic versus traditional laparoscopic hysterectomy for benign pathology. The study design was that of a retrospective case-control study of robotic (first 100 consecutive) versus traditional (last 100 consecutive) total laparoscopic hysterectomy cases at an obstetrics and gynecology multi-institutional community practice. Patient characteristics were equivalent in both groups (age, p = 0.364; body mass index, p = 0.326; uterine weight, p = 0.565), except for a higher number of Caucasians in the traditional laparoscopic group (p = 0.017). Compared to patients who underwent robotic laparoscopic hysterectomy, those who underwent the traditional procedure had higher visual analog scale pain scores (3.1 ± 1.5 vs. 4.6 ± 2.4, respectively; p < 0.001) and used more narcotics (27.5 vs. 35.4 mg hydrocodone, respectively; p < 0.05). Factors that could potentially increase pain (more procedures, more ports, total incision size, and longer operative time) were significantly higher in the robotic group, but only surgical approach, amount of narcotic, and age correlated with pain levels when evaluated with regression analysis. Complication rates were equivalent between groups. In conclusion, patients who underwent robotic assisted laparoscopic hysterectomy had statistically decreased postoperative pain scores and narcotic use than those who underwent the traditional laparoscopic approach, even when the robotic cases involved more procedures and ports and were associated with longer operative time.

Laparoendoscopic single-site surgery in kidney surgery: clinical experience and future perspectives

Laparoscopic surgery of the upper urinary tract has reduced the morbidity related to large abdominal incisions and has resulted in significant advantages over open surgery. Nevertheless, the pursuit for even more minimally invasive alternatives to laparoscopy has led to the concept of scarless surgery and the approach of laparoendoscopic single-site surgery (LESS). LESS is currently a feasible approach for the majority of kidney surgical procedures, and there is intense debate regarding its efficiency and advantages. In the present review of the literature, the current status of upper urinary LESS and its advantages and disadvantages, as well the technological and technical evolution, are presented.

Laparoendoscopic single-site surgery with the second-generation single port instrument delivery extended reach surgical system in a porcine model

Purpose

To describe our initial experience with the second-generation Single Port Instrument Delivery Extended Reach (SPIDER) laparoendoscopic single-site surgical system in a porcine model.

Materials and Methods

In four swine weighing approximately 32 to 35 kg, five nephrectomies, four adrenalectomies, three pyeloplasties, and three partial cystectomies and closures were performed by a single surgeon. The swine were placed in the lateral flank position under general anesthesia. The SPIDER surgical system was introduced through a single incision and the various urological procures were performed by use of flexible instrumentation.

Results

All five nephrectomies, four adrenalectomies, three pyeloplasties, and three partial cystectomies and closures were performed successfully without additional skin incisions. The mean time to set up the SPIDER platform was 3.5 minutes. The mean operative time for the right and left nephrectomies was 45.4 minutes and 47.8 minutes, respectively. The mean operative time for the right and left adrenalectomies was 37.6 minutes and 35.4 minutes, respectively. The mean operative time for the pyeloplasties for one right and two left ureters was 45.6 minutes and 47.3 minutes, respectively. The mean operative time for the partial cystectomies and closures was 18.6 minutes. There were no noticeable intraoperative complications except for minimal urine leakage in the first pyeloplasty.

Conclusions

In this initial pilot evaluation, the second-generation SPIDER surgical system offered intuitive instrument maneuverability and restored triangulation. However, retraction was challenging because of the lack of strength and the limited ability for precise manipulation of the tip. Future refinements of the technology and prospective studies are needed to optimize the application of this technology in urology.

An objective comparison of novice trainees learning LESS versus traditional laparoscopy with the use of a pelvic trainer

Objectives

To compare the differences between LESS and SL among a population of subjects inexperienced of both techniques.

Materials and Methods

Participants were randomly assigned to the LESS or SL arm of the course; between the population examined, none had previous laparoscopic experience. The trial consisted in performing three increasingly difficult exercises either with LESS or standard laparoscopy.

Results

Time of execution and Objective Structured Assessment of Technical Skills score (OSATS) were recorded. Statistical analysis failed to detect any significant difference between the two arms of the trial. A trend in favor of standard laparoscopy was observed anyway.

Discussion

Our study evaluates the technical performance on a surgical simulator in the laboratory setting, with the use of standardized tasks and validated metrics. We believe that a controlled and safe environment aids objective evaluation of LESS compared to SL. Literature on this particular topic is somehow conflicting and heterogeneous. Our trial demonstrated that novices performed LESS tasks without any additional difficulties compared to standard laparoscopy. The aim of such investigation is to support knowledge of this new technology in order to facilitate its use in selected patients and surgical procedures.

Recent advances in urologic laparoscopic surgeries: laparoendoscopic single-site surgery, natural orifice transluminal endoscopic surgery, robotics and navigation

Laparoscopic surgery was developed at the end of the 1980s and has been utilized in almost all urologic surgical procedures. It offers the benefits of less invasiveness and earlier recovery than open surgery. The introduction of laparoendoscopic single-site surgery has offered reduced pain and improved cosmetic satisfaction to patients. Scarless nephrectomy has been realized with transvaginal natural orifice transluminal endoscopic surgery in women. The development of surgical robots has decreased the technical difficulty of complicated procedures, shortened the learning curve, and improved perioperative outcomes relative to laparoscopic surgery. Surgical navigation using real-time sonography, augmented reality, fluorescence, or radioisotope images will improve the quality of these surgeries.

A comparative study of laparoendoscopic single-site surgery versus conventional laparoscopy for upper urinary tract malignancies

Purpose

The proper indication for laparoendoscopic single-site surgery (LESS) in urology is still under debate, especially for malignant diseases. We compared the perioperative outcomes between LESS and conventional laparoscopy (CL) for upper urinary tract malignancies.

Materials and Methods

We reviewed the records of 75 patients who underwent radical nephrectomy, nephroureterectomy with bladder cuff excision, or partial nephrectomy with the LESS or CL approach between December 2008 and December 2010. We compared characteristics and perioperative outcomes between patients who underwent LESS or CL. All operations were performed by three surgeons using the transperitoneal approach.

Results

For all three surgery types, no differences in patient characteristics, estimated blood losses, transfusion rates, or durations of hospital stay were found between the two groups. No complications were found between the two groups in those who underwent nephroureterectomy with bladder cuff excision; however, significantly more complications were found in the LESS group than in the CL group in those who underwent radical nephrectomy or partial nephrectomy. Most of the complications with LESS radical nephrectomy occurred in the early introduction period of the technique.

Conclusions

No significant differences in perioperative outcomes were found between the LESS and CL groups in those who underwent radical nephrectomy or nephroureterectomy with bladder cuff excision. Therefore, the use of LESS in these cases is expected to expand as surgeons gain more experience with this technique and as other technical advances in laparoscopic instruments occur. However, partial nephrectomy with LESS should be performed restrictively considering the current level of surgical skill.

A systematic review and meta-analysis of current evidence comparing laparoendoscopic single-site adrenalectomy and conventional laparoscopic adrenalectomy

PURPOSE

To assess the efficacy and safety of laparoendoscopic single-site adrenalectomy (LESS-A) and conventional laparoscopic adrenalectomy (LA) as a systematic review and meta-analysis of current evidence.

METHODS

We conducted a thorough search for comparative studies that compared LESS-A and conventional LA in the following databases: MEDLINE, EMBASE, and the Cochrane library. Studies were reviewed independently and rated by Newcastle-Ottawa Quality Assessment Scale. The operative time, estimated blood loss in operation, the time to resume oral intake after surgery, postoperative hospital stay, and the visual analog pain scale (VAPS) score were included for analysis to compare the efficacy, while the complications together with the analgesia use were included for analysis to compare the safety.

RESULTS

Nine studies with 171 LESS-A cases and 272 conventional LA cases were identified. Although operative time was longer in LESS-A (mean difference [MD] 15.46, 95% confidence interval [CI] 11.18 to 19.74), estimated blood loss (MD 4.72, 95% CI 12.08 to 21.52) and the time to resume oral intake (MD -0.04, 95% CI -0.19 to 0.11) were similar; LESS-A presented a shorter postoperative stay in hospital (MD -0.60, 95% CI -0.86 to -0.35) and lower VAPS score (MD -1.21, 95% CI -1.44 to -0.97). Besides, the risk of minor postoperative complications (risk ratio [RR] 1.74, 95% CI 0.78 to 3.87) was similar. The postoperative analgesia demand in total (RR 0.65, 95% CI 0.52 to 0.81) together with the analgesia usage lasting more than 24 hours after surgery (RR 0.35, 95% CI 0.21 to 0.58) were associated with lower risk in LESS-A, however.

CONCLUSIONS

Based on current evidence, the operative time seems to be longer in LESS-A; however, operative blood loss and complications are similar. In addition, LESS-A presents a shorter hospital stay after surgery and more acceptable perception of pain than conventional LA.

Cost assessment of instruments for single-incision laparoscopic cholecystectomy

This study concludes that a modified single-incision procedure for cholecystectomy using 2 regular ports inserted through the umbilicus can be performed at lower cost than a conventional 4-port procedure.

Background and Objectives:

Specially designed surgical instruments have been developed for single-incision laparoscopic surgery, but high instrument costs may impede the implementation of these procedures. The aim of this study was to compare the cost of operative implements used for elective cholecystectomy performed as conventional laparoscopic 4-port cholecystectomy or as single-incision laparoscopic cholecystectomy.

Methods:

Two consecutive series of patients undergoing single-incision laparoscopic cholecystectomy were assessed: (1) single-incision cholecystectomy using a commercially available multichannel port (n=80) and (2) a modified single-incision cholecystectomy using 2 regular trocars inserted through the umbilicus (n=20) with transabdominal sutures for gallbladder mobilization (puppeteering technique). Patients who underwent conventional 4-port cholecystectomy during the same time period (n=100) were selected as controls.

Results:

The instrumental cost of the single-incision cholecystectomy using a commercial port was significantly higher (median, $1123) than the cost for conventional 4-port (median $441, P < .0005) and modified single-incision cholecystectomy (median $342, P < .0005). The cost of the modified single-incision procedure was significantly lower than that for the 4-port cholecystectomy (P < .0005).

Conclusion:

The modified single-incision procedure using 2 regular ports inserted through the umbilicus can be performed at lower cost than conventional 4-port cholecystectomy.

Laparoendoscopic single-site versus conventional transperitoneal laparoscopic pyeloplasty: a prospective randomized study

OBJECTIVES

To evaluate the potential benefits of laparoendoscopic single-site pyeloplasty over conventional laparoscopic pyeloplasty.

METHODS

Between October 2009 and January 2012, 39 patients were enrolled in a prospective study and randomized to undergo a laparoendoscopic single-site pyeloplasty (n = 19) or conventional laparoscopic pyeloplasty (n = 20). The outcomes in the two groups were compared by using Mann-Whitney U-test and χ(2) -test, and considering a P-value less than 0.05 as statistically significant.

RESULTS

There was no difference in blood loss (55.67 ± 6.71 vs 45.84 ± 5.22 mL, P = 0.60), transfusion rates (0% for both) and hospitalization time (2.12 ± 0.23 vs 2.06 ± 0.34 days, P = 0.72) between the laparoendoscopic single-site pyeloplasty and conventional laparoscopic pyeloplasty groups. The time to return to normal activities was shorter (8.65 ± 1.25 vs 11.53 ± 1.28 days, P = 0.01), and median operative time (195.21 ± 12.15 vs 145.62 ± 15.34 min, P = 0.001) was longer in the laparoendoscopic single-site pyeloplasty group compared with the conventional laparoscopic pyeloplasty group. No significant intraoperative or postoperative complications occurred in either group. Compared with conventional laparoscopic pyeloplasty, laparoendoscopic single-site pyeloplasty yielded better cosmetic results and patient satisfaction. The mean follow-up period was 19.7 months (4-28 months). The success rate was 95% in both the groups. Both the visual analog scale and the postoperative use of analgesics were significantly lower in patients who underwent laparoendoscopic single-site pyeloplasty.

CONCLUSIONS

Our findings suggest that laparoendoscopic single-site pyeloplasty can offer faster recovery and higher patient satisfaction than conventional laparoscopic pyeloplasty. Thus, this novel technique promises to become the treatment of choice in minimally-invasive management of ureteropelvic junction obstruction.

Initial experience of umbilical laparoendoscopic single-site nephron-sparing surgery with KeyPort and DuoRotate system

OBJECTIVES

To present the feasibility of laparoendoscopic single-site (LESS) nephron-sparing surgery (NSS) using new reusable umbilical single-port system and instruments.

METHODS

A prospective study was performed to evaluate operative data and patient outcomes after LESS-NSS with KeyPort®, a tri-channel single-port placed through a 2.5-cm umbilical incision, and specific DuoRotate® instruments. Patient characteristics, operative time, estimated blood loss (EBL), complications, visual analog pain scale (VAPS), and visual analogue wound satisfaction scale (VAWSS) scores were registered.

RESULTS

Six consecutive nonselected patients with indication of NSS and normal contralateral kidney were offered LESS-NSS. An accessory 3.5 mm port that facilitated renoraphy and unclamped technique was used in 4 (66.7%) cases each. Median tumor maximum size was 4.0 (1-7.5) cm; age 64 (31-76) years; body mass index 28.4 (22.1-39.3) kg/m(2); operative time 233.5 (140-250) min; EBL 500 (200-500) mL; difference in hemoglobin 2.3 (0.1-4.6) g/dL. VAPS at day 2 was 0.7/10 and the median length of stay 3 (2-4) days. One case (16.7%) needed transfusion. None required conversion to standard laparoscopy or use of other additional ports. Postoperative complications occurred in 3 (50%) and major complications in 1 (16.7%). Incisions were totally hidden in the umbilicus. Pathology revealed angiomyolipoma (3), renal cell carcinoma (2), and chronic inflammation (1). Tumor margins were negative in all cases with malignancy. VAWSS at first month was 9.4 (8.1-10). At a median follow-up of 24 (10-32) weeks, no patient developed complications related to the approach.

CONCLUSIONS

Umbilical LESS-NSS through a new single-port system of reusable nature, with or without the help of an accessory port and occasionally without clamping, can be effectively and very economically performed with minimum postoperative pain. Good candidates are patients with presumed benign renal masses that appreciate the cosmetic advantage of the approach.

A double-blinded randomized controlled trial of laparoendoscopic single-site access versus conventional 3-port appendectomy

OBJECTIVE

The aim of the current study was to perform a multicentered prospective double-blinded randomized controlled trial comparing laparoendoscopic single-site access (LESS) versus conventional three-port laparoscopic appendectomy (TPLA).

BACKGROUND

The clinical benefits and disadvantages of LESS appendectomy are uncertain.

METHODS

Between October 2009 and March 2011, consecutive patients admitted with clinical or radiological evidence of appendicitis were randomly assigned to receive either LESS or TPLA. The main outcome measurement was overall pain score. Secondary outcome measurements included operative time, conversion rates, morbidity rates, activity pain scores, activity scores, patient satisfaction, and cosmesis scores.

RESULTS

During the study period, 200 patients were recruited to the study. There were no significant differences in the morbidity rates, operative time, conversion rates, and postoperative recovery. There were also no differences in the overall pain score and pain score at rest. However, patients in the LESS group experienced significantly more pain upon coughing or standing and required more intravenous analgesics (P = 0.001, 0.038, and 0.035, respectively). Wound cosmesis and satisfaction scores on the contrary were better in the LESS group (P = 0.002 and P = 0.052). No differences in the quality-of-life assessments were present at 2 weeks after operation.

CONCLUSIONS

LESS and conventional appendectomy resulted in similar perioperative outcomes. However, LESS appendectomy resulted in worst pain scores upon exertion and required a higher dosage of intravenous analgesics when compared with TPLA. On the contrary, wound cosmesis and satisfaction scores were better in the LESS group. Hence, adoption of the technique for appendectomy will depend on patient preferences and the presence of local expertise.

Single port/incision laparoscopic surgery compared with standard three-port laparoscopic surgery for appendicectomy - a randomised controlled trial

BACKGROUND

Laparoscopic surgery has become the preferred approach for many procedures because of reduced post-operative pain, better recovery, shorter hospital stay and improved cosmesis. Single incision laparoscopic surgery is one of the many recent variants where either standard ports or a specially designed single multi-channel port is introduced through a single skin incision. While the cosmetic advantage of this is obvious, the evidence base for claims of reduced morbidity and better post-operative recovery is weak. This study aims to compare the effectiveness of single port/incision laparoscopic appendicectomy with standard three-port laparoscopic appendicectomy in adult patients at six weeks post-surgery. We also wish to assess the feasibility of a multicentre randomised controlled trial comparing single port/incision laparoscopic surgery with standard three-port laparoscopic surgery for other surgical techniques.

METHODS AND DESIGN

Patients diagnosed with suspected appendicitis and requiring surgical treatment will be randomised to receive either standard three-port or single incision laparoscopic surgery. Data will be collected from clinical notes, operation notes and patient reported questionnaires. The following outcomes will be considered:1. Effectiveness of the surgical procedure in terms of:•patient reported outcomes•clinical outcomes•resource use2. Feasibility of conducting a randomised controlled trial (RCT) in the emergency surgical setting by quantifying:•patient eligibility•randomisation acceptability•feasibility of blinding participants to the intervention received•completion rates of case report forms and patient reported questionnaires

TRIAL REGISTRATION

ISRCTN66443895 (assigned 10 March 2011, first patient randomised 09 January 2011).

Upper urinary tract laparoendoscopic single-site surgery based on a novel cost-effective reusable platform

BACKGROUND AND PURPOSE

Several disposable platforms have been introduced for laparoendoscopic single-site (LESS) surgery. Besides technical issues, cost is one of the main limiting factors for their widespread use. We present our experience with LESS surgery for kidney pathologies using the first completely reusable LESS platform.

PATIENTS AND METHODS

We performed LESS kidney procedures in 29 patients including nephrectomy (18), partial nephrectomy (3), pyeloplasty (4), and renal cyst ablation (4). All procedures were performed using a completely reusable single-port device (X-Cone) with a simplified combination of standard and prebent instruments. We obtained perioperative and demographic data including a visual analog pain scale (VAS); complications were recorded using Clavien grading.

RESULTS

Mean patient age was 49.31 years. Conversion to standard laparoscopy was necessary in one and addition of a needlescopic instrument in four cases. No open conversion was necessary. Intra- and postoperative complications occurred in two (Clavien II) cases. Mean operative time was 110, 90, and 89 minutes, and hospital stay was 4.9, 3.1, and 3.6 days for nephrectomy, partial nephrectomy, and pyeloplasty, respectively. Mean VAS was 2.13, 1.67, and 1.5 while blood loss was 81.3 mL, 140 mL, and 17.5 mL, respectively. There were no positive resection margins.

CONCLUSIONS

LESS with a completely reusable platform is feasible for different upper urinary tract procedures yielding favorable functional and cosmetic results. A simplified combination of standard straight instruments and a single prebent grasper facilitates handling and shortens the learning curve. Reusable materials significantly reduce cost and may help to further adopt LESS surgery in surgical practice.