Comparison of the use of electrothermal bipolar vessel sealer with harmonic scalpel in total laparoscopic hysterectomy

Applications of different energy devices in laparoscopic and robotic gynecological surgery: a systematic review

PURPOSE

This study aims to evaluate and summarize the existing literature regarding the safety, efficacy, and outcomes of various energy sources in minimally invasive gynecological surgeries.

METHODS

A systematic review was conducted by searching the PubMed/MEDLINE, Cochrane Library, and Web of Science databases. We included studies that compared different energy sources used in laparoscopic and robotic gynecological surgeries, focusing on their advantages and complications. 37 studies were ultimately included in this review.

RESULTS

Among the 37 studies, 24 were randomized controlled trials, 11 were retrospective studies, and 1 was prospective. In laparoscopic procedures, advanced energy sources were associated with reduced intraoperative blood loss and shorter operative times. Specifically, ultrasonic devices demonstrated significantly less thermal damage and facilitated easier postoperative histologic assessment of lymph nodes compared to conventional electrosurgery. In robotic assisted surgeries, the literature reported shorter hospital stays and reduced thermal injury during colpotomy when utilizing laser energy. No significant differences were observed in other perioperative outcomes across both minimally invasive approaches.

CONCLUSION

Advanced energy devices may offer advantages in gynecological minimally invasive surgery, particularly in minimizing tissue trauma and enhancing surgical precision. However, evidence on outcomes such as lateral thermal spread and tissue healing remains limited and inconsistent. Further high-quality comparative studies are needed to clarify the clinical implications of each energy source and guide optimal instrument selection, especially in robotic assisted procedures.

Retrospective, Observational, Pilot Study to Assess the Safety and Efficacy of Goel's Technique of Laparoscopic Hysterectomy in Endometrial Carcinoma

Background Laparoscopic hysterectomy is a substitute for the abdominal hysterectomy technique for endometrial carcinoma. Goel's technique is a unique laparoscopic hysterectomy. The main feature of Goel's technique is that vaginal manipulators or myoma screws are not used in the procedure as vaginal manipulators or myoma screws contribute to an increased risk of spread of malignancy in the systemic circulation. Methods In this retrospective, observational, pilot, single-centre study, the patient's baseline demographics, clinical characteristics, and assessment and outcome measures of Goel's technique of laparoscopic hysterectomy were recorded. The following metrics were used to assess the postoperative recovery: average time to discharge the patients after the surgery; postoperative complications/pain assessment; correlation between pain and day of hospital discharge; association between the day of discharge and postoperative pain assessment; association between operation time and complications. Results A total of 35 female patients with early-stage endometrial cancer were included, their mean age being 56.29 years. The mean time to hospital discharge of the patients was 2.94 days. Of the cases, 2.9% had a ureteral injury and ureterovaginal fistula as complications, which were resolved during the follow-up period. On day one, the mean pain score decreased significantly to 50% from day zero (D0), and on day two, the mean pain score showed a significant fall of 91.5% from D0. Ten patients with a mean pain assessment score of 3.60 at D0 were released on the second day, 20 patients with a mean score of 3.80 at D0 were released on the second day, and five patients with a mean score of 5.60 at D0 were released at ≥ four days. Not a single patient developed any wound infection, dehiscence, or herniation for six months. Conclusion Goel's technique helped patients with endometrial carcinoma to recover faster and it reduced hospital stays with fewer postoperative complications.

Advanced bipolar vessel sealing devices vs conventional bipolar energy in minimally invasive hysterectomy: a systematic review and meta-analysis

PURPOSE

To compare conventional bipolar electrosurgery with advanced bipolar vessel sealing (ABVS) devices for total laparoscopic hysterectomy (TLH).

METHODS

A systematic review was conducted by searching Scopus, PubMed/MEDLINE, ScienceDirect, and Cochrane Library from January 1989 to November 2021. We identified all studies comparing ABVS devices with conventional bipolar electrosurgery in TLH and reporting at least one of the following outcomes: total blood loss, total operative time, hospital stay, perioperative complications, or costs. Meta-analysis was conducted with a random effect model reporting pooled mean differences and odds ratios (ORs) with related 95% confidence intervals (CIs).

RESULTS

Two randomized controlled trials and two retrospective studies encompassing 314 patients were included out of 615 manuscripts. The pooled estimated total blood loss in the ABVS devices group was lower than conventional bipolar electrosurgery of 39 mL (95% CI - 65.8 to - 12.6 mL; p = .004). The use of ABVS devices significantly reduced the total operative time by 8 min (95% CI - 16.7 to - 0.8 min; p = .033). Hospital stay length did not differ between the two groups, and a comparable overall surgical complication rate was observed [OR of 0.9 (95% CI 0.256 - 3.200; p = .878].

CONCLUSIONS

High-quality evidence comparing ABVS devices with conventional bipolar electrosurgery for TLH is lacking. ABVS devices were associated with reduced total blood loss and operative time; however, observed differences seem clinically irrelevant. Further research is required to clarify the advantages of ABVS devices over conventional bipolar electrosurgery and to identify cases that may benefit more from their use.

Outcomes of conventional and advanced energy devices in laparoscopic surgery: a systematic review

INTRODUCTION

Hemostasis is an important step in all surgical procedures. Mechanical methods of hemostasis have been gradually abandoned in favor of electrosurgery. The aim of this systematic review was to evaluate the effectiveness of electrosurgical instruments utilized in minimally invasive gynecological procedures.

MATERIAL AND METHODS

We performed a systematic review, including randomized controlled trials, prospective and retrospective studies, comparing the outcomes of different energy devices (EDs) used in laparoscopic gynecologic surgeries. We extracted data about blood loss (BL), mean operative time, post-operative pain, hospital stay and complications associated with each electrosurgical device.

RESULTS

We included 30 studies reporting comparative outcomes concerning conventional (bipolar and monopolar) and innovative EDs (Harmonic scalpel, LigaSure, Plasma kinetic gyrus, Thunderbeat, EnSeal, Marseal, Caiman and ALAN). New EDs were found to be more efficient in complex surgeries due to less intraoperative BL and shorter operative time. No significant decrease in hospital stay, post-operative pain or complications was found with the use of new energy instruments.

CONCLUSIONS

Although new electrosurgical devices seem an appealing and safer option, there is still insufficient evidence for one vessel-sealing technology to be considered superior to another. Therefore, monopolar and conventional bipolar (CB) are still widely used in laparoscopic gynecology.

A Comparison between Total Abdominal Hysterectomy versus Total Laparoscopic Hysterectomy

Objectives

To compare the operative and postoperative outcomes of total laparoscopic hysterectomy (TLH) and total abdominal hysterectomy (TAH).

Materials and Methods

In this retrospective comparative study, we reviewed all hysterectomies performed in the Al-Karak Governmental Hospital in Al-Karak, Jordan, from September 2018 to July 2022. We enrolled 129 patients who underwent hysterectomy. The patients were divided into the TLH (n = 39) and TAH (n = 90) groups. Patient data were accessed through hospital records and analyzed using SPSS 25.0.

Results

The most common indication for TLH was uterine fibroid, and that for TAH was abnormal uterine bleeding, although the specimen weights were comparable. There was no significant between-group difference in the patient's demographics. Although the TLH group had longer operative time, the hospital stay was shorter and there were no reported cases of wound infection. The estimated blood loss was significantly lower in the TLH group than in the TAH group, but there was no difference between the two groups in terms of blood transfusion requirement and postoperative hemoglobin level.

Conclusion

TLH and TAH had comparable overall outcomes in the Al-Karak Governmental Hospital. However, TLH was superior to TAH in terms of blood loss, and patients with TLH recovered faster without postoperative wound infection.

Comparison of two advanced bipolar tissue sealer/dividers for laparoscopic ovariectomy in dogs: articulating enseal G2 versus Ligasure Maryland device

BACKGROUND

Advanced bipolar tissue sealer/dividers provide the most reliable and efficient means of tissue dissection and blood vessel sealing in laparoscopic surgery and the techniques are continuously improved. In veterinary practice, cost-effectiveness is of major impact, leading to re-use of instruments designed and sold for single use. Two high-end devices were evaluated and compared in a highly standardized laparoscopic ovariectomy procedure in dogs: The new generation Ligasure Maryland Sealer/Divider (LMSD) with improved atraumatic curved jaw shape for delicate tissue handling and dissection and non-stick nanocoating, and the new-generation Articulating Enseal G2 (AENG2) with several proclaimed features improving surgical performance, including articulation of the forceps tip; improved tissue compression during sealing; unique offset electrode configuration; and specific nanoparticle coating minimizing thermal spread and tissue sticking. Twenty-one client-owned dogs admitted for elective laparoscopic ovariectomy were randomly assigned to one of two groups: ovariectomy using AENG2 on the left ovary and LMSD in the right ovary or vice-versa. Procedural video recordings were used to assess ovarian ligament fat score, smoke formation, occurrence of bleeding, and excision duration. Excised tissues were examined histopathologically and collateral thermal damage was scored in three anatomic zones: suspensory ligament, vascular pedicle, and uterine junction. Tissue sealers were used repeatedly following standardized cleaning protocol with instrument washing machine and ethylene oxide gas sterilization and the number of uses until device failure was recorded.

RESULTS

Excision times were significantly increased for AENG2 (median 01:35 min) compared to LMSD (median 01:00 min). Minor hemorrhage from incomplete sealing occurred in 3 sites in 2 patients (2x AENG2, 1x LMSD) and was not significantly different between groups. Smoke production as scored on videos and thermal tissue damage scores on histopathology also did not differ between AENG2 and LMSD. Both vessel sealers could be re-used repeatedly.

CONCLUSION

AENG2 provides a good alternative to LMSD in laparoscopic ovariectomy, with only minor differences in measured variables. Subjectively, the articulating feature of AENG2 did not improve surgical performance in laparoscopic ovariectomy and the use of LMSD appeared more straight-forward for this specific procedure. However, differences in operating these devices may be subject to personal preference.

"In Vitro" Evaluation of Energy-Based Sealing of Graft Side Branches in Bypass Surgery

INTRODUCTION

Our objective was to compare the in vitro efficacy of electrothermal bipolar [EB] vessel sealing and ultrasonic harmonic scalpel [HS] versus mechanical interruption, with conventional ties or surgical clips (SC), in sealing saphenous vein (SV) collaterals, during its eventual preparation for bypass surgery.

METHODS

Experimental in vitro study on 30 segments of SV. Each fragment included two collaterals at least 2 mm in diameter. One of them was sealed by ligation with 3/0 silk ties (control) and the other one with EB (n = 10), HS (n = 10) or medium-6 mm SC (n = 10). After incorporation in a closed circuit with pulsatile flow, the pressure was progressively increased until causing rupture. Collateral diameter, burst pressure, leak point, and histological study were recorded.

RESULTS

Burst pressure was higher for SC (1320.20 ± 373.847 mmHg) as compared with EB (942.2 ± 344.9 mmHg, p = 0.065), and especially with HS (637.00 ± 320.61 mmHg, p = 0.0001). No statistically significant difference between EB and HS was found, and bursting always happened at supraphysiological pressures. The leak point for HS was always detected in the sealing zone (10/10), while for EB and SC, it occurred in the sealing zone only in 6/10(60%) and 4/10(40%), respectively (p = 0.015).

CONCLUSIONS

Energy delivery devices showed similar efficacy and safety in sealing of SV side branches. Although bursting pressure was lower than with tie ligature or SC, non-inferiority efficacy was shown at the range of physiological pressures in both, EB and HS. Due to their speed and easy handling, they may be useful in the preparation of the venous graft during revascularization surgery. However, remaining questions about healing process, potential spread of tissue damage and sealing durability, will require further analysis.

Comparative analysis of peri-operative outcomes following total laparoscopic hysterectomy with conventional bipolar-electrosurgery versus high-pressure pulsed LigaSure use

Objectives:

Materials and Methods:

Results:

Conclusion:

Tubal stump pregnancy after salpingectomy-Does the time interval from surgical intervention to conception matter?

AIM

Ectopic pregnancy implantation on the tubal stump after salpingectomy is a rare location for extrauterine pregnancy, whose pathogenesis is still unknown. The purpose of this study was to examine whether the time interval elapsed from salpingectomy may predispose the embryo to implantation on the tubal stump in the next pregnancy subsequent to tube removal.

METHODS

Nine women operated for stump pregnancy (study group) between 2008 and 2019 were retrospectively identified. For each case in the study group, 12 consecutive cases that underwent laparoscopic salpingectomy constituted the control group. A sample size of 100 control patients was calculated to achieve statistical power (97.8%) and an α of 0.05. The control groups were triple-matched with the study group for patients' age, indications for salpingectomy (tubal pregnancy or hydrosalpinx prior to in vitro fertilization treatment) and mode of conception of the subsequent pregnancy following salpingectomy.

RESULTS

Nine women underwent surgery for stump pregnancy during the study period. All women had a surgical history of laparoscopic salpingectomy. The time interval from prior salpingectomy to subsequent pregnancy was significantly shorter in study group than in the control group (4.3 ± 2.1 months vs. 15.6 ± 13.7 months, respectively, p = 0.016).

CONCLUSION

A possible association between the short time interval from prior salpingectomy to ectopic implantation on the tubal stump in the subsequent pregnancy was found. The clinical implications of these findings and in particular whether patients should be advised to wait at least 4 months from the salpingectomy to the subsequent pregnancy remain unclear.

Comparison of surgical outcomes using Gyrus PKS™ vs LigaSure™ in total laparoscopic hysterectomy: A randomised controlled trial

BACKGROUND

Advanced vessel sealing devices are widely used in laparoscopic surgery. However, there remains a lack of adequately powered trials comparing laparoscopic advanced vessel sealing devices in the clinical setting, especially in gynaecology.

AIMS

This single-blinded randomised controlled trial aims to compare the surgical outcomes of total laparoscopic hysterectomy (TLH) using either the Gyrus PKS™ LYONS dissecting forceps or the LigaSure™ Maryland jaw vessel sealer/divider.

MATERIALS AND METHODS

Women who required TLHs for benign indications were randomised to having their surgeries performed using either Gyrus PKS™ or LigaSure™. Time to haemostasis (from initial skin incision to detachment of the uterus with secured haemostasis) was the primary outcome; a 20% difference in time was considered clinically significant. Secondary outcomes measured were intra-operative blood loss, complications, conversions, post-operative analgesia use, and length of stay. This study was registered with the Australia New Zealand Clinical Trials Registry ACTRN12615000639516.

RESULTS

Sixty-four women were included in the study - 33 and 31 in the Gyrus PKS™ and LigaSure™ arms, respectively. TLHs performed by LigaSure™ had statistically significantly shorter time to haemostasis compared to Gyrus PKS™ by 10.6 min (95% CI 1.3-2.0, P = 0.03). There were no differences in any of the other secondary outcomes measured.

CONCLUSIONS

This trial suggests there is no difference between using either device. TLHs performed using LigaSure™ have statistically significantly shorter time to haemostasis than those using Gyrus PKS™; however, the difference is not considered clinically significant as it was only 14.2%. No other differences in surgical outcomes were detected.

A novel surgical technique for enucleation in rabbits to reduce the risk of intra- and post-operative orbital hemorrhage

A 10-year-old male castrated Holland Lop rabbit (Oryctolagus cuniculus) was presented for severe ulcerative stromal keratitis of the right eye and a luxated hypermature cataract and glaucoma of the left eye. Staged bilateral enucleation was elected. A LigaSure™ electrosurgical bipolar vessel-sealing device was used as a means to minimize intraoperative and post-operative hemorrhage, especially that associated with the orbital venous plexus. The LigaSure™ was used to ligate and transect all extraocular muscles, the optic nerve bundle, and the base of the third eyelid with no complications encountered. Overall, the LigaSure™ was easy to use, resulted in minimal hemorrhage, and reduced surgery time. This is the first report of the use of a LigaSure™ to aid in the enucleation of a rabbit. Although only positive results were achieved as an alternative to conventional methodologies, its use in clinical practice should be that of caution until a larger study evaluating the long-term results is performed.

Perioperative Interventions to Minimize Blood Loss at the Time of Hysterectomy for Uterine Leiomyomas: A Systematic Review and Meta-analysis

STUDY OBJECTIVE

Hysterectomy for uterine leiomyoma(s) is associated with significant morbidity including blood loss. A systematic review and meta-analysis was conducted to identify nonhormonal interventions, perioperative surgical interventions, and devices to minimize blood loss at the time of hysterectomy for leiomyoma.

DATA SOURCES

Librarian-led search of Embase, MEDLINE, Web of Science, Scopus, Cumulative Index to Nursing and Allied Health Literature, and Cochrane databases from 1946 to 2018 with hand-guided updates.

METHODS OF STUDY SELECTION

Included studies reported on keywords of hysterectomy, leiomyoma, and operative blood loss/postoperative hemorrhage/uterine bleeding/metrorrhagia/hematoma. The review excluded a comparison of route of hysterectomy, morcellation, vaginal cuff closure, hormonal medications, vessel sealing devices for vaginal hysterectomy, and case series with <10 patients.

TABULATION, INTEGRATION, AND RESULTS

Surgical blood loss, postoperative hemoglobin (Hb) drop, hemorrhage, transfusion, and major and minor complications were analyzed and aggregated in meta-analyses for comparable studies in each category. A total of 2016 unique studies were identified, 33 of which met the inclusion criteria, and 22 were used for quantitative synthesis. The perioperative use of misoprostol in abdominal hysterectomy (AH) was associated with a lower postoperative Hb drop (0.59 g/dL; 95% confidence interval [CI], 0.39-0.79; p < .01) and blood loss (-96.43 mL; 95% CI, -153.52 to -39.34; p < .01) compared with placebo. Securing the uterine vessels at their origin in laparoscopic hysterectomy (LH) was associated with decreased intraoperative blood loss (-69.07 mL; 95% CI, -135.20 to -2.95; p = .04) but no significant change in postoperative Hb (0.24 g/dL; 95% CI, -0.31 to 0.78; p = .39) compared with securing them by the uterine isthmus. Uterine artery ligation in LH before dissecting the ovarian/utero-ovarian vessels was associated with lower surgical blood loss compared with standard ligation (-27.72 mL; 95% CI, -35.07 to -20.38; p < .01). The postoperative Hb drop was not significantly different with a bipolar electrosurgical device versus suturing in AH (0.26 g/dL; 95% CI, -0.19 to 0.71; p = .26). There was no significant difference between an electrosurgical bipolar vessel sealer (EBVS) and conventional bipolar electrosurgical devices in the Hb drop (0.02 g/dL; 95% CI, -0.15 to 0.20; p = .79) or blood loss (-50.88 mL; 95% CI, -106.44 to 4.68; p = .07) in LH. Blood loss in LH was not decreased with the LigaSure (Medtronic, Minneapolis, MN) impedance monitoring EBVS compared with competing EBVS systems monitoring impedance or temperature (2.00 mL; 95% CI, -8.09 to 12.09; p = .70). No significant differences in hemorrhage, transfusion, or major complications were noted for all interventions.

CONCLUSION

Perioperative misoprostol in AH led to a reduction in surgical blood loss and postoperative Hb drop (moderate level of evidence by Grading of Recommendations, Assessment, Development and Evaluation guidelines) although the clinical benefit is likely limited. Remaining interventions, although promising, had at best low-quality evidence to support their use at this time. Larger and rigorously designed randomized trials are needed to establish the optimal set of perioperative interventions for use in hysterectomy for leiomyomas.

Comparison of the efficacy and safety of two advanced vessel sealing technologies in total laparoscopic hysterectomy

AIM

Adequately powered, randomized controlled studies evaluating efficacy and safety of advanced bipolar energy devices in gynecologic laparoscopic surgery are very few. We aimed to compare the two most commonly used devices in total laparoscopic hysterectomy.

METHODS

This randomized controlled trial was carried out in the department of obstetrics and gynecology in an education and research hospital. One hundred thirty-two women who underwent total laparoscopic hysterectomy for benign indications were included. Women with age younger than 18 years, suspected malignancy, stage 3-4 endometriosis and cervical/intraligamentary leiomyoma were excluded. Patients were randomized preoperatively to LigaSure or Articulating Enseal. One experienced surgeon performed all operations.

RESULTS

LigaSure was used in 67 patients and Enseal was used in 65 patients. Primary outcomes of the study were operative time (time from start of sealing and transection of the round ligament until completion of colpotomy) and total operative time (time from skin incision to skin closure). Secondary outcomes were intraoperative blood loss (blood lost during operative time period) and perioperative complications. Operative time was significantly shorter in LigaSure group (P = 0.001). Total operative time, intraoperative blood loss and perioperative complications were similar. When two groups were further classified according to uterine weight taking 300 g as cut-off value, operative time was significantly shorter in LigaSure group in both subgroups (P = 0.003 and P = 0.007).

CONCLUSION

LigaSure use in total laparoscopic hysterectomy shortens operative time when compared with Enseal; without an apparent increase in intraoperative blood loss and perioperative complications. On the other side, total operative time remains unaffected.

Impact of energy devices on the post-operative systemic immune response in women undergoing total laparoscopic hysterectomy for benign disease of the uterus

OBJECTIVE

Laparoscopic surgery is associated with reduced surgical stress response, lesser post- operative immune function, and consequent early recovery compared with conventional open surgery. There is a lack of evidence regarding the inflammatory stress response with the use of different energy devices. The present study was conducted to evaluate and compare the inflammatory response in total laparoscopic hysterectomy (TLH) using three different energy devices.

MATERIAL AND METHODS

A prospective randomized controlled study was conducted in 60 women with abnormal uterine bleeding undergoing TLH. They were divided into three groups based on the energy devices used, namely integrated bipolar and ultrasonic energy (Thunderbeat), ultrasonic (Harmonic) and electrothermal bipolar vessel sealing system (Ligasure). Cytokines and chemokines were measured in all three groups at different time points.

RESULTS

Serum levels of interleukin (IL)-6 and tumor necrosis factor-alpha (TNF-α) increased postsurgery in all three groups and gradually declined by 72 hours. The geometric mean serum (IL)-6 levels was highest with Ligasure at 24 hours as compared with the other groups. Levels of TNF-α, macrophage inflammatory protein (MIP-1) α, MIP-1 β were also higher at 3 hours in the Ligasure group. When the differences between the groups were measured at different time points, there was a significantly greater increase in serum IL-6 levels in the Ligasure group at 24 hours (p=0.010). No significant difference was found in the post-operative course between the groups.

CONCLUSION

A greater inflammatory response was seen after the use of Ligasure indicating greater tissue damage. However, this response was not correlated with any difference in postoperative recovery.

"Energy devices in gynecological laparoscopy - Archaic to modern era"

The introduction of newer vessel sealing systems has revolutionized techniques of hemostasis during laparoscopic surgery. These devices allow for rapid sequential tissue and vessel sealing, coagulation, and transection. Despite of widespread use of newer advanced bipolar and ultrasonic devices, monopolar and conventional bipolar electro-surgery still carry weightage due to wider range of tissue effect, dissection capabilities, cost effectiveness, and ease of availability. Here in we discussed different types of commonly available energy sources in terms of mechanism, efficacy and safety as thorough knowledge is utmost important for surgeon to choose appropriate instrument for surgical procedure.

Managing Postoperative Pain After Minimally Invasive Gynecologic Surgery in the Era of the Opioid Epidemic

In this review, we examine the evidence behind nonopioid medication alternatives, peripheral nerve blocks, surgical techniques, and postoperative recovery protocols that can help minimize and effectively treat postoperative pain after minimally invasive gynecologic surgery (MIGS). Because of the depth and heterogeneity of the data, a narrative review was performed of reported interventions. A comprehensive review was performed of PubMed, Embase, and the Cochrane Database with a focus on randomized controlled trials. In the absence of literature specific to benign gynecology, similar specialty or procedural data were reviewed. A variety of nonopioid medications, surgical techniques, and postoperative recovery protocols have shown significant improvements in postoperative pain after gynecologic surgery. Nonopioid medication options that are beneficial include acetaminophen, nonsteroidal anti-inflammatories, and antiepileptics. Incision infiltration with local anesthesia also significantly reduces pain. Surgically, minimally invasive approaches, reducing the laparoscopic trocar size to <10 mm, and evacuating the pneumoperitoneum at the end of the case all have significant benefits. Lastly, enhanced recovery pathways show promise in reducing pain after MIGS. By using a multimodal approach, minimally invasive gynecologic surgeons can help to minimize and manage postoperative pain with less reliance on opioid pain medications.

Clinical utility of a novel ultrasonic vessel sealing device in transecting and sealing large vessels during laparoscopic hysterectomy using advanced hemostasis mode

OBJECTIVE(S)

The ultrasonic advanced energy study device (AH device) is the first surgical device indicated to seal vessels up to and including 7mm using ultrasonic technology alone. This study assesses clinical experience during total laparoscopic hysterectomy (TLH) using advanced hemostasis mode (AHM).

STUDY DESIGN

This was a prospective, non-randomized, single arm, multicenter, observational study which did not modify or influence current surgeon technique for elective TLH for benign disease. Each surgeon assessed hemostasis, defined as the hemostatic transection of the uterine vasculature (left/right) with at least one use of the AH device in AHM without the use of additional hemostatic measures other than the AH device. Patients were followed for 4-6 weeks after surgery. Vessel sealing performance was quantitatively assessed for transection and sealing of the uterine artery (UA), the uterine pedicle (UP; defined as cases where the UA could not be 'isolated') and the ovarian pedicle (OP) (when indicated). Adverse events (AEs) related to the AH device or procedures were collected.

RESULTS

Forty patients underwent the procedure. Mean age was 49 years and mean body mass index was 28kg/m(2). Mean surgical duration was 88min. None required conversion to open procedure. Using only the AH device, hemostasis was achieved and maintained in 119 (94.4%) transections (both left and right sides of the UA/UP and OP). Additional hemostasis was achieved in 5 patients using conventional bipolar (4) or monopolar (1) energy. No patient required a blood transfusion postoperatively. Only one adverse event of pain was considered to be related to the use of the ultrasonic AH device during this study.

CONCLUSION

These results support that the AH device with its AHM has clinical utility in sealing named vessels in TLH. The new algorithm to deliver energy in the AHM has the potential to reduce the need for additional hemostatic devices or products as well as the potential to reduce the need for multiple instrument changes during surgery.

Comparison of the use of LigaSure, HALO PKS cutting forceps, and ENSEAL tissue sealer in total laparoscopic hysterectomy: a randomized trial

STUDY OBJECTIVE

There are many instruments with different energy modalities or with different properties that are available for use in total laparoscopic hysterectomy. The aim of the study was to compare the use of LigaSure (Valleylab, Boulder, CO), HALO PKS cutting forceps (Gyrus-ACMI, Maple Grove, MA), and ENSEAL tissue sealer (SurgRx, Inc. Redwood City, CA) in total laparoscopic hysterectomy with respect to operation time and blood loss as main outcomes. Perioperative complications, return of gastrointestinal activity, and hospitalization time were assessed as secondary outcomes.

DESIGN

Randomized prospective study (Canadian Task Force classification I).

SETTING

Adana Numune Training and Research Hospital.

PATIENTS

Forty-five patients with the indication of hysterectomy were randomized into 3 groups for total laparoscopic hysterectomy. Patients with malignancies, having 3 or more previous abdominal surgeries, a uterus larger than 12 weeks of gestation, and who had to undergo additional surgical procedures during the same operation were excluded.

INTERVENTIONS

Total laparoscopic hysterectomy.

MEASUREMENTS AND MAIN RESULTS

Operations were completed in all 15 patients in the LigaSure and HALO PKS Cutting Forceps groups with the planned instruments. In 2 patients in the ENSEAL group, bleeding could not be controlled with ENSEAL, and additional instruments were used. One patient in the ENSEAL group had bladder injury. The mean operation time and blood loss were 52.4 ± 12.8, 51.86 ± 14.11, and 55.7 ± 15.7 minutes (p > .05) and 138 ± 54.3, 118 ± 63.3, and 218 ± 115.9 mL (p < .05) in the LigaSure, HALO PKS, and ENSEAL groups, respectively. Changes in hemoglobin/hematocrit levels, return of gastrointestinal activity, and hospitalization time did not differ between groups.

CONCLUSION

These 3 novel bipolar platforms had similar results in total laparoscopic hysterectomy. These instruments were not determined to be independent predictors of operating time and amount of blood loss.

Rationale, bench testing and in vivo evaluation of a novel 5 mm laparoscopic vessel sealing device with homogeneous pressure distribution in long instrument jaws

Background

In 1998, an electrothermal bipolar vessel sealing (EBVS) system was introduced and quickly became an integral component of the surgical armamentarium in various surgical specialties. Currently available EBVS instruments use a scissor-like jaw configuration and closing mechanism, which causes decreasing compression pressure from the proximal to the distal end of the jaws. A new EBVS system is described here which utilizes a different instrument jaw configuration and closing mechanism to enable a more homogeneous pressure distribution despite longer instrument jaws.

Methods

Results of jaw pressure distribution measurements as well as sealing experiments with subsequent burst pressure measurements ex vivo on bovine uterine arteries are demonstrated. Furthermore, an in vivo evaluation of the new EBVS system in a canine and porcine model including histological examination is presented.

Results

The device revealed an even pressure distribution throughout the whole jaw length. The ex vivo burst pressure measurements revealed high average burst pressures, above 300 mmHg, independent of the outer diameter (1 to 7 mm) of the tested vessels. Histological evaluation of sealed vessels 21 days postoperatively demonstrated sealed and fused vessels without adjacent tissue damage.

Conclusions

The even pressure distribution leading to a sufficient tissue sealing in combination with the novel closing mechanism and extended jaw length differentiates the novel device from other available EBVS systems. This might offer a reduction of the overall procedure time, which should be further evaluated in a clinical study.

Robot-assisted vaginal hysterectomy: two cases

Hysterectomy remains the most frequent surgical gynaecological procedure. We report two cases of robot-assisted vaginal hysterectomy and show its feasibility. Robotic assistance in vaginal hysterectomy could combine both the advantage of the vaginal route (reducing surgical length, blood loss, hospitalisation and recovery), and the advantage of the robot assistance (3D endoscopic vision, easier instrumental handling, surgical ergonomics) especially when the hysterectomy is difficult. It could be used in other pathologies that are already treated by vaginal route.

Comparative studies of energy sources in gynecologic laparoscopy

Energy sources incorporating "vessel sealing" capabilities are being increasingly used in gynecologic laparoscopic surgery although conventional monopolar and bipolar electrosurgery remain popular. The preference for one device over another is based on a combination of factors, including the surgeon's subjective experience, availability, and cost. Although comparative clinical studies and meta-analyses of laparoscopic energy sources have reported small but statistically significant differences in volumes of blood loss, the clinical significance of such small volumes is questionable. The overall usefulness of the various energy sources available will depend on a number of factors including vessel burst pressure and seal time, lateral thermal spread, and smoke production. Animal studies and laboratory-based trials are useful in providing a controlled environment to investigate such parameters. At present, there is insufficient evidence to support the use of one energy source over another.

Common uses and cited complications of energy in surgery

BACKGROUND

Instruments that apply energy to cut, coagulate, and dissect tissue with minimal bleeding facilitate surgery. The improper use of energy devices may increase patient morbidity and mortality. The current article reviews various energy sources in terms of their common uses and safe practices.

METHODS

For the purpose of this review, a general search was conducted through NCBI, SpringerLink, and Google. Articles describing laparoscopic or minimally invasive surgeries using single or multiple energy sources are considered, as are articles comparing various commercial energy devices in laboratory settings. Keywords, such as laparoscopy, energy, laser, electrosurgery, monopolar, bipolar, harmonic, ultrasonic, cryosurgery, argon beam, laser, complications, and death were used in the search.

RESULTS

A review of the literature shows that the performance of the energy devices depends upon the type of procedure. There is no consensus as to which device is optimal for a given procedure. The technical skill level of the surgeon and the knowledge about the devices are both important factors in deciding safe outcomes.

CONCLUSIONS

As new energy devices enter the market increases, surgeons should be aware of their indicated use in laparoscopic, endoscopic, and open surgery.

[Are there still contra-indications to laparoscopic treatment of endometrial carcinoma?]

Laparoscopic treatment is becoming a standard of care for early endometrial carcinoma. However, not all patients are suitable for this approach. A review of the current literature provides some arguments to differentiate absolute contra-indications from relative ones, for which, whenever possible, some options are suggested.

Novel hemostatic devices in thyroid surgery: electrothermal bipolar vessel sealing system and harmonic scalpel

Accurate and efficient hemostasis is one of the first priorities of the thyroid surgeon to prevent or minimize complications, including injury to the laryngeal nerves or parathyroid glands, perioperative hemorrhage and the potentially life-threatening hematoma. Means to prevent and control intra- or postoperative bleeding therefore remain a topic of utmost importance. Although thyroidectomy is one of the most common surgical procedures, the safest, most efficient and cost-effective way to achieve hemostasis is debated by endocrine surgeons and otorhinolaryngologists. In our opinion, there is no substitute for meticulous surgical technique and hemostasis, while experience in such operations is essential for the best outcome with the fewest complications. Ties, suture-ligations, monopolar/bipolar diathermy, clips, and hemostatic agents/sealants or tissue adhesives have been used. Over the last 10 years, innovative hemostatic devices, such as the electrothermal bipolar vessel sealing system and ultrasonically activated shears, have been developed and have been welcome adjuncts to the thyroid surgeon's armamentarium. In this review we aim to cover both novel and well-established traditional techniques of hemostasis in thyroid surgery, with specific focus on the bipolar vessel sealer and harmonic scalpel.