LigaSure hemorrhoidectomy versus the procedure for prolapse and hemorrhoids: A meta-analysis of randomized controlled trials.

BACKGROUND: LigaSure hemorrhoidectomy and the procedure for prolapse and hemorrhoids (PPH) are both relatively new treatments for managing symptomatic hemorrhoids. This review aimed to evaluate and compare their short-term outcomes. METHODS: We searched MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials and the China National Knowledge Infrastructure database for randomized controlled trials comparing the LigaSure procedure and PPH published in any language from 1998 to October 2013. RESULTS: A total of 5 studies involving 397 participants were included in this review. Pooled analysis showed that the LigaSure procedure was associated with significantly lower recurrence rate [relative risk (RR) = 0.21, 95% confidence interval (CI): 0.06 to 0.72, P = .01] and significantly shorter operating time [mean difference (MD) = -6.39, 95% CI: -7.68 to -5.10, P < .001]. The analysis showed no significant difference in postoperative pain between the two techniques (MD = 0.55, 95% CI: -0.15 to 1.25, P = .12] or in time off work or away from normal activity [standard MD = 0.13, 95% CI: -1.80 to 2.06, P = .9]. The two techniques did not show significant differences in postoperative complications or other patient-related outcomes (P > .05). CONCLUSIONS: Our review indicates that both LigaSure hemorrhoidectomy and PPH are safe alternatives for the management of hemorrhoids. Available evidence suggests that the LigaSure technique is associated with shorter operating time and lower hemorrhoid recurrence rate, but these conclusions should be further confirmed in large, multicenter randomized controlled trials with long-term follow-up.

Single-port access (SPA) laparoscopic myomectomy with uterine artery ligation via a retroperitoneal approach is feasible in women with large uterine leiomyoma.

OBJECTIVE: Uterine artery ligation (UAL) at the time of myomectomy has shown to decrease blood loss during the operation. However, little is known about the efficacy and feasibility of UAL during single-port access (SPA) myomectomy. The present study was performed to investigate the clinical benefits of UAL in SPA myomectomy and to provide details of the surgical techniques. MATERIALS AND METHODS: A retrospective and comparative review on the surgical outcomes of the patients who underwent SPA myomectomy with UAL and those who underwent SPA myomectomy without UAL was conducted. UAL was performed at its origin from the internal iliac artery via a retroperitoneal approach. RESULTS: A total of 56 women who received SPA myomectomy were reviewed (24 patients received SPA myomectomy with UAL while 32 patients received SPA myomectomy only). The median weight of total resected leiomyomas was heavier for the patients who received UAL than those who did not receive UAL [210.0 g (range: 171.5-335.0 g) vs. 119.0 g (62.5-265.0 g), p = 0.023]. However, no differences in total operative time, estimated blood loss, perioperative hemoglobin changes, use of postoperative analgesics and postoperative complications between the two groups were seen. CONCLUSION: Obtaining similar surgical outcomes between the patients who received UAL with larger leiomyomas and those who did not receive UAL with smaller leiomyomas suggests that UAL is a feasible surgical approach to reduce blood loss during SPA myomectomy. Detailed descriptions of the surgical techniques are provided in the present report.

Effectiveness of uterine tamponade devices for refractory postpartum haemorrhage after vaginal birth: a systematic review.

OBJECTIVES: To evaluate uterine tamponade devices' effectiveness for atonic refractory postpartum haemorrhage (PPH) after vaginal birth and the effect of including them in institutional protocols. SEARCH STRATEGY: PubMed, EMBASE, CINAHL, LILACS, POPLINE, from inception to January 2021. STUDY SELECTION: Randomised and non-randomised comparative studies. OUTCOMES: Composite outcome including surgical interventions (artery ligations, compressive sutures or hysterectomy) or maternal death, and hysterectomy. RESULTS: All included studies were at high risk of bias. The certainty of the evidence was rated as very low to low. One randomised study measured the effect of the condom-catheter balloon compared with standard care and found unclear results for the composite outcome (relative risk [RR] 2.33, 95% CI 0.76-7.14) and hysterectomy (RR 4.14, 95% CI 0.48-35.93). Three comparative studies assessed the effect of including uterine balloon tamponade in institutional protocols. A stepped wedge cluster randomised controlled trial suggested an increase in the composite outcome (RR 4.08, 95% CI 1.07-15.58) and unclear results for hysterectomy (RR 4.38, 95% CI 0.47-41.09) with the use of the condom-catheter or surgical glove balloon. One non-randomised study showed unclear effects on the composite outcome (RR 0.33, 95% CI 0.11-1.03) and hysterectomy (RR 0.49, 95% CI 0.04-5.38) after the inclusion of the Bakri balloon. The second non-randomised study found unclear effects on the composite outcome (RR 0.95, 95% CI 0.32-2.81) and hysterectomy (RR 1.84, 95% CI 0.44-7.69) after the inclusion of Ebb or Bakri balloon. CONCLUSIONS: The effect of uterine tamponade devices for the management of atonic refractory PPH after vaginal delivery is unclear, as is the role of the type of device and the setting. TWEETABLE ABSTRACT: Unclear effects of uterine tamponade devices and their inclusion in institutional protocols for atonic refractory PPH after vaginal delivery.

LigaSure small jaw versus conventional neck dissection: a systematic review and meta-analysis.

BACKGROUND: Neck dissection has a central role in the management of head and neck cancers. This systematic review aimed to compare the intraoperative and postoperative parameters between conventional and LigaSure Small Jaw (LSJ)-assisted neck dissection. METHODS: PubMed (MEDLINE), Embase, and the Cochrane Library were searched. independently by two authors for relevant articles comparing the outcomes of conventional and LSJ-assisted neck dissection. Data from each study were extracted, and a random-effects model was used in the pooled analysis. RESULTS: Compared with conventional techniques, LSJ-assisted neck dissection was associated with a significantly reduced operative time. The rates of postoperative hematoma, infection, amount of intraoperative blood loss, the length of hospital stay and the drainage amount showed no significant intergroup differences. CONCLUSIONS: The meta-analysis provides evidence that properly using LSJ may reduce the operative time compared with that of conventional techniques. Surgeons may consider using LSJ in neck dissection according to personal experiences.

Ligaclip for Preauricular Skin Tags in the Newborn.

INTRODUCTION: Skin tags are benign lesions, that often represent only an aesthetic problem; if subjected to trauma, they can occasionally bleed with possible infection and pain. When they occur in the preauricular region, attention should be paid to the diagnosis and approach; in fact, controversy exists in the differential diagnosis between hair follicle nevi, accessory tragus, and skin tag. Misdiagnosis and failure of treatment can lead to serious consequences, such as chondritis. MATERIALS AND METHODS: In our retrospective study, we evaluated 19 newborns affected by single, unilateral skin tag in the preauricular region. Each patient underwent a careful clinical examination; lesions without a pilosebaceous unit and with a thin, soft pedicle were treated in the nursery with Ligaclip (Johnson & Johnson). RESULTS: Skin tag falls between day 7 and 10. We had no cases of edema, cellulitis, clip loss, or bleeding. Scarring results were extremely satisfactory at 3-month follow-up. CONCLUSION: We believe that after a careful clinical examination, cases of skin tags in the preauricular area can be selected and treated with Ligaclip. This procedure can be considered rapid, safe, economical, and simple in the newborn patients.

Cumulative evidence for reducing recurrence of colonic diverticular bleeding using endoscopic clipping versus band ligation: Systematic review and meta-analysis.

BACKGROUND AND AIM: Either clipping or band ligation will become the most common endoscopic treatment for colonic diverticular bleeding (CDB). Rebleeding is a significant clinical outcome of CDB, but there is no cumulative evidence comparing reduction of short-term and long-term rebleeding between them. Thus, we conducted a systematic review and meta-analysis to determine which endoscopic treatment is more effective to reduce recurrence of CDB. METHODS: A comprehensive search of the databases PubMed/MEDLINE and Embase was performed through December 2019. Main outcomes were early and late rebleeding rates, defined as bleeding within 30 days and 1 year of endoscopic therapy for CDB. Initial hemostasis, need for transcatheter arterial embolization, or surgery were also assessed. Overall pooled estimates were calculated. RESULTS: Sixteen studies fulfilled the eligibility criteria, and a total of 790 participants were included. The pooled prevalence of early rebleeding was significantly lower for band ligation than clipping (0.08 vs 0.19; heterogeneity test, P = 0.012). The pooled prevalence of late rebleeding was significantly lower for band ligation than clipping (0.09 vs 0.29; heterogeneity test, P = 0.024). No significant difference of initial hemostasis rate was noted between the two groups. Pooled prevalence of need for transcatheter arterial embolization or surgery was significantly lower for band ligation than clipping (0.01 vs 0.02; heterogeneity test, P = 0.031). There were two cases with colonic diverticulitis due to band ligation but none in clipping. CONCLUSION: Band ligation therapy was more effective compared with clipping to reduce recurrence of colonic diverticular hemorrhage over short-term and long-term durations.

Successful treatment of a massive rectal bleeding from a Dieulafoy's lesion with endoscopic band ligation

No disponible

A novel method of bilateral patent processus vaginalis ligation in transumbilical single-site multiport laparoscopic orchiopexy.

Objective: To evaluate safety and efficacy of a novel method of bilateral patent processus vaginalis ligation in transumbilical single-site multiport laparoscopic orchiopexy for children. Methods: A retrospective study was carried out comparing the novel ligation and conventional ligation performed by a single surgeon between July, 2017-July, 2018. The patients were divided into the novel group (42 cases) and the conventional group (59 cases). In the novel group, transumbilical single-site multiport laparoscopic orchiopexy was performed and the bilateral internal rings was stitched with "8" pattern suture. In the conventional group, the conventional TriPort laparoscopic orchiopexy was performed and purse string suture was used to fix the internal rings. The parameters of operative duration time, postoperative hospital stay; postoperative complications were compared between 2 groups. Results: All operations were successful. No Perioperative period complications were found and all patients were discharged within 4-6 days after operation. There is no statistic difference in the surgery time and hospitalization day. However, there is significant difference in the Pain face scale scores after day 2(1.60±0.73 VS 2.02±0.86). And there is no scar and the satisfactory cosmetic could be seen in scrotum and inguinal area in the novel group. Conclusion: The novel ligation was safety and efficacy. It is relatively easy to perform with smaller scar and less pain. We propose the novel ligation as a more viable treatment option for pediatric cryptorchidism with bilateral patent processus vaginalis.

Ligating the rectum with cable tie facilitates rectum transection in laparoscopic anterior resection of rectal cancer.

PURPOSE: Proper transection of the distal rectum is important for reconstruction of bowel continuity in rectal cancer surgery. In this study, we introduced a modified technique for ligation of the distal rectum, and investigated its safety and efficiency to facilitate the rectum transection. METHODS: After complete mobilization and transection of the mesorectum, a cable tie was carefully positioned distal to the tumor, followed by washout and transecting the rectum with a linear stapler. From September 2017 to June 2018, consecutive 67 mid-low rectal cancer patients with laparoscopic anterior resection underwent this technique. Clinical data of these patients, including number of firings, pathological and operative variables, and postoperative outcomes, were compared with those of 132 consecutive patients who underwent traditional surgery from January 2016 to August 2017. RESULTS: Compared with the traditional method, cable tie ligation significantly reduced the number of firings (1.1 ± 0.32 vs. 1.3 ± 0.52, p < 0.001). A very high ratio of one firing transection of rectum was observed in the cable tie group (94.0% vs. 68.9%, p < 0.001), even in patients with tumor at or below the peritoneal reflection (90.2% vs. 54.4%, p < 0.001), in male patients (95.5% vs. 65.8%, p < 0.001), and in obese patients (93.8% vs. 64.9%, p = 0.005). The mean distal margin was longer in the cable tie group (3.19 ± 1.77 cm vs. 2.54 ± 1.36 cm, p = 0.005), with no positive distal margin observed. The operation time, quality of mesorectum, and morbidity between two groups were comparable. Two leaks (3.0%) in the cable tie group were observed, similar to 3.8% in the control. CONCLUSIONS: Ligation of the rectum with a cable tie reduces the number of cartridges, and increases the rate of one stapler firing for rectal transection, even in those difficult cases like male, overweight, and low rectal cancer patients. It is also useful for occlusion of the rectum before washout. It is safe, feasible, and worthwhile for popularization. TRIAL REGISTRATION: Registered at ClinicalTrial.gov, number NCT03570684.

Endoscopic Detachable Snare Ligation Improves the Treatment for Colonic Diverticular Hemorrhage.

BACKGROUND/AIMS: Recently, endoscopic detachable snare ligation (EDSL) has become increasingly common as treatment for colonic diverticular hemorrhage. This study aimed to evaluate the efficacy and safety of EDSL in comparison with endoscopic clipping (EC) as treatment for colonic diverticular hemorrhage. METHODS: From April 2013 to September 2017, 131 patients were treated with EDSL or EC at the Tokyo Metropolitan Bokutoh Hospital. We retrospectively evaluated patient characteristics and clinical outcomes, including early rebleeding rates (rebleeding within 30 days after initial hemostasis) and complications for each procedure. RESULTS: Of 131 patients, 44 and 87 were treated with EDSL and EC respectively. We initially achieved endoscopic hemostasis in all patients. The early rebleeding rate was significantly lower for EDSL (6.8%, 3 patients) than for EC (23.0%, 20 patients). There were no differences in the total procedure time (43 vs. 45 min, p = 0.84) or time to hemostasis after identification of bleeding site (12 vs. 10 min, p = 0.23). There were no severe complications following EDSL. CONCLUSION: The results of this study suggest that EDSL is superior to EC as treatment for colonic diverticular hemorrhage. EDSL may provide improvements in the clinical course of patients with colonic diverticular hemorrhage.

Temporary Ligation of the Uterine Artery at Its Origin Using a Removable "Shoelace" Knot.

STUDY OBJECTIVE: To demonstrate a technique of temporary ligation of the uterine artery at its origin. DESIGN: A step-by-step demonstration of the surgery in an instructional video. SETTING: A private hospital in Mumbai, India. INTERVENTION: The peritoneum over the pelvic side wall was dissected bilaterally to expose the uterine arteries at their origins. Using a polyglactin absorbable suture, a double thread loop was used to create a removable "shoelace" knot (Video 1). Both uterine arteries were ligated in this manner. The myomectomy was completed uneventfully, and the myoma bed was sutured in 2 layers using polyglactin sutures. Once suturing was completed, the shoelace knot was untied by simply pulling one end of the thread to restore blood supply to the uterus. Intraoperative blood loss was 30 mL, and the total operation time was 120 minutes. CONCLUSION: Laparoscopic ligation of the uterine arteries at their origin is known to reduce intraoperative blood loss [1,2]. However, in patients desiring future fertility, the effect of permanent ligation of these vessels bilaterally remains under study [3-5]. The removable "shoelace" knot is a low-cost, readily available alternative to metallic titanium clips that requires no special surgical expertise to implement.

Use of the Endoscopic Clipping Over the Scope Technique to Treat Acute Severe Lower Gastrointestinal Bleeding in the Colon and Anal Transition Zone.

Endoscopic treatment of lower gastrointestinal bleeding can be challenging. This article reports on the use of the endoscopic clipping over the scope technique to treat acute severe lower gastrointestinal bleeding. In particular, it describes the approaches and outcomes of using the technique for acute severe bleeding in the colon and the anal transition zone. The following synopsis is the one that you supplied, but lightly copyedited. Please confirm OK. Please note that the synopsis will appear in PubMed: Endoscopic treatment of lower gastrointestinal bleeding can be challenging. This article reports on the use of the endoscopic clipping over the scope technique to treat acute severe lower gastrointestinal bleeding. In particular, it describes the approaches and outcomes of using the technique for acute severe bleeding in the colon and the anal transition zone.

Exclusion of electrical and mechanical function of the left atrial appendage in patients with persistent atrial fibrillation: differences in efficacy and safety between endocardial ablation vs epicardial LARIAT ligation (the EXCLUDE LAA study).

BACKGROUND: Electrical isolation of the left atrial appendage (LAA) may provide incremental benefits for arrhythmia management in patients undergoing radiofrequency ablation (RFA) for persistent atrial fibrillation (AF). OBJECTIVE: The aim of this study was to compare efficacy and safety of endocardial ablation and LAA exclusion with LARIAT device for electrical and mechanical exclusion of LAA. METHODS: We compared patients who underwent endocardial LAA isolation during index RFA for persistent AF and underwent a repeat RFA to patients who underwent LAA exclusion with LARIAT device followed by RFA for AF in this multicenter registry. Efficacy of electrical and mechanical isolation of LAA was assessed. RESULTS: We included 182 patients of which 91 patients underwent endocardial LAA isolation during RFA for AF, and 91 patients underwent LAA exclusion with LARIAT device followed by RFA for AF. Baseline characteristics were similar except for higher CHA2DS2-VASc score, coronary artery disease, and prior stroke rate in LARIAT arm. Persistence of electrical isolation (measured at beginning of second procedure) after LARIAT procedure was higher than one-time AF-RFA (96.7% vs 52.8%, p < 0.01). Acute pulmonary vein isolation rates were similar in both arms. AF recurrence rate after second isolation attempts at 1 year was similar in both arms. No difference in major complications was noted between both arms. CONCLUSIONS: LAA exclusion with LARIAT device appears to be more efficacious as compared to one-time endocardial ablation, but not compared to repeat isolation, in achieving complete electrical isolation of LAA for persistent AF.

Macroligaduras hemorroidales. Tratamiento ideal del prolapso hemorroidario. Seguimiento a 5 años / Hemorrhoidal macro rubber band ligations. Ideal treatment of hemorrhoidal prolapse. Follow-up at 5 years

Introducción: Entre los tratamientos alternativos de las hemorroides se destaca por ser costo-eficientes las ligaduras elásticas convencionales. Las macroligaduras elásticas se hayan en difusión por similares resultados que las bandas elasticas convencionales. La literatura es aun escasa. El objetivo fue analizar los resultados, morbilidad y recidiva a corto y mediano plazo de hemorroides tratadas con macroligaduras. Diseño: Estudio observacional analítico prospectivo. Pacientes: 188 pacientes (110 varones y 78 mujeres). Periodo: 2011-2014. Lugar: Institución privada universitaria. Métodos: Inclusión: pacientes tratados con hemorroides internas sintomáticas. Exclusión: enfermedad anoperineal asociada, tratamiento previo, inmunocompromiso o anticoagulación. Se registraron resultados, complicaciones y recidiva. La técnica empleada fue la descripta por Reis Neto. El Seguimiento fue a 10, 30 días y 6 y 12 meses y 5 años. Resultados: Todos fueron tratados con internación de corta estadía. La edad fue 49,5 años (23-76). Los síntomas fueron prolapso 96, sangrado 44 y ambos 48. Se realizó sólo una sesión en 178 casos (94,6%). Se trataron 2 paquetes en 122 y 3 en 66. El dolor moderado fue en 5 casos y prolongado en 2. El sangrado leve y tenesmo se presentó en la mayoría de los pacientes, pero desapareció en la primera semana. Se registró sangrado inmediato moderado en 5% sin sangrado severo inmediato. Otras complicaciones inmediatas: 2 trombosis y 3 congestión/edema local. En 1 paciente ocurrió un sangrado que requirió de internación sin necesidad de cirugía en forma alejada. Sólo en 3 casos se realizó resección local de plicomas previos. En 139 casos se realizó como único procedimiento. La recidiva fue 6 casos. (2 al primer año y 4 a los 5 años), 5 se trataron con nueva macroligadura y 1 con cirugía. No se registró ninguna complicacion severa, infecciosa o única relacionada al procedimiento. El seguimiento a 1 año fue del 100% y a 5 años del 96%. Discusión y conclusiones: El tratamiento con macroligaduras para el prolapso hemorroidario presentó con baja morbilidad sin complicaciones severas. Los resultados son reproducibles entre diferentes autores. Son el tratamiento ideal para las hemorroides grado III con poco componente externo. (AU)

Introduction: Alternative therapies for internal hemorrhoid plexus are several procedures with specific indications for each grade of hemorrhoid. Due to some major advantages, rubber band ligation has become probably in the most popular between colorectal surgeons. The high-macro rubber band ligation appears to be as the first choice but literature is few. Objective: To analyze results, morbidity and recurrence of internal hemorrhoid disease treated with high-macro rubber band ligation. Design: Observational non-randomized prospective analysis. Patients: 188 patients (110 male). Period: 2011-2014. Setting: Private Institution. Methods: Patients with symptomatic internal hemorrhoid disease (grade II-III-IV). Results, Immediate and late complications and 5 years recurrence were registered. Technique used was the original description by Reis Neto. Patients with immunosuppression, additional perianal disease, previous treatment and anticoagulation were excluded. Results: There was only one session in 178 cases. Two banding were placed in 122 and 3 in 66. Symptoms were prolapse in 96, bleeding in 44 and both in 48. 139 patients were treated as only procedure. Tenesmus and light hemorrhage occurred in most cases. Moderate or late pain was registered in 7 cases, and immediate moderate bleeding in 5%. There was no severe immediate bleeding. Immediate morbidity was 2 thrombosis and 3 anal congestion. There was one moderate late bleeding at day 28 and required admission. Recurrence occurred in six cases, 5 were ligated again and 1 was treated by conventional surgery. There was none severed or unique complication or infection associated. Discussion and conclusion: Macrorubber band presented low morbidity and there are no severe complications at 5 years follow-up. Recurrence of prolapse is low and could be treated by a new session with equal morbidity. Results are equivalent and reproducible by different authors. This procedure might be the ideal treatment for hemorrhoid prolapse. (AU)

Haemorrhoid energy therapy versus rubber band ligation for the management of grade I and II haemorrhoids: a randomized trial.

BACKGROUNDS: Grade I and II haemorrhoids are commonly managed in colorectal practice. Management often involves rubber band ligation. The haemorrhoid energy therapy (HET) device (Medtronic, Minneapolis, MN, USA) has been developed as an alternative to rubber band ligation (RBL). This study is the first to prospectively evaluate the device versus RBL in the management of grade I and II haemorrhoids. METHODS: A single blind, randomized controlled trial was conducted in the colorectal outpatient department. Patients with symptomatic haemorrhoids suitable for banding were prospectively recruited and randomized. Primary outcome was post procedural pain at 1 h as recorded on a 10-point Likert scale. Secondary outcomes were efficacy in reduction of haemorrhoidal symptom score at 12 weeks, daily average and maximum pain scores for 14 days and complications arising from the intervention. RESULTS: Thirty patients were randomized (14 HET, 16 RBL). There was no significant difference between the two group's pre-intervention symptom score and haemorrhoidal grade. The mean pain scores at 1 h in the HET group were 1.5 ± 068 (95% confidence interval), and in the RBL group 4.64 ± 1.74 (95% confidence interval) (P < 0.05). Average (0.7 versus 2.95, P < 0.05) and maximum (1.25 versus 4.4, P < 0.05) pain were lower in the HET group on day one post procedure. At 12 weeks there was no significant difference in the reduction of haemorrhoid symptom scores between the groups (HET 2.27, RBL 1.5 (P > 0.2)). CONCLUSION: HET causes less pain then RBL, and is at least as effective in treating the symptoms associated with grade I and II haemorrhoids in the outpatient setting.

Renal Hilus Ligation With Single Stapler in Laparoscopic Donor Nephrectomy.

BACKGROUND: Ligation of renal hilus is the most important stage of laparoscopic donor nephrectomy. Laparoscopic staplers are securely used for renal pedicle control. We present our donor nephrectomy cases in which we used 1 stapler for renal artery and vein ligation. METHODS: Demographic data, number of arteries and veins, ligation types, operation time, and complication rates are recorded. RESULTS: One hundred twenty laparoscopic donor nephrectomy cases who were operated between December 2017 and August 2018 in Istinye University Hospital and Istanbul Aydin University Hospital were retrospectively evaluated. All of the operations were done by 2 surgeons with a fully laparoscopic method. None of the cases were converted to open nephrectomy. There was 1 renal artery in 110 (91.7%) cases, 2 renal arteries in 9 (7.5%) cases, and 3 arteries in 1 (0.8%) case. Renal artery and vein were ligated with single stapler in 115 (95.8%) cases. Double stapler was used in 5 (4.2%) patients. There were no major complications for donors and no implantation problems for grafts. DISCUSSION: Laparoscopic donor nephrectomy is the most used technique for living donor operations. Vascular stapler is securely used for renal artery and vein ligation with high costs. Two or, due to the number of vessels, sometimes 3 staplers are used in the standard technique. In our study, the operation was finished securely in 95.8% of the patients with single stapler use. Single stapler use for ligating renal hilus is safe in kidneys even with suitable multiple arteries and veins in laparoscopic donor nephrectomy.

Inferior load generated by preloaded versus manually loaded haemorrhoid banding devices: the effect of 'creep relaxation'.

BACKGROUND: The efficacy of rubber band ligation of haemorrhoids relies on the load generated on haemorrhoidal tissue by bands as they return to their preformed shape after being deployed. 'Preloaded' haemorrhoid banding devices are widely available, but the effect of the resultant prolonged stretch on bands while stored in this manner has never been examined by comparing these to manually loaded devices, which are stretch immediately prior to being deployed. A difference could have clinical relevance, potentially resulting in a higher rate of clinical failure. The present study aimed to investigate any difference in load generated by preloaded versus manually loaded devices. METHODS: A preloaded and a manually loaded device were selected for comparison. Each type was measured on a testing rig. The device type, load generated by each band and the time to expiry were recorded. RESULTS: A total of 137 haemorrhoid bands were tested: 66 preloaded and 71 manually loaded. There was a statistically significant overall reduction in load generated by preloaded versus manually loaded devices (284.0 versus 272.1 g, mean difference -11.9 g, 95% confidence interval -17.5 to -6.3 g, P = 0.0001). Adjusted for time, the load generated by preloaded bands fell 3.7 g (95% confidence interval 2.7-4.8, P < 0.001) for each month closer to the expiry date. CONCLUSIONS: The load generated by haemorrhoid bands from preloaded devices is lower and deteriorates significantly towards their expiry date compared with bands from manually loaded devices. This is mostly likely due to their storage in a stretched state. This should be considered by clinicians when using haemorrhoid banding devices.

Over-the-scope clip for acute esophageal variceal bleeding.

Over-the-scope clip (OTSC) has been reported to control non-variceal bleeding; however, the use of this device for acute variceal hemorrhage (AVH) is very limited. We report our experience regarding the use of OTSC in patients with AVH in terms of technical success and safety. A retrospective clinical experience case series study was conducted from October 2017 to June 2019 at two tertiary care centers. Adult patients with AVH as a result of small varices managed with OTSC after endoscopic band ligation (EBL) failure were enrolled. Standard gastroscope and OTSC 'type a' with a cap of 11 mm in diameter were used in all procedures. Total of five patients with chronic liver disease (Child-Pugh score ≤8) and portal hypertension (hepatic venous pressure gradient, mean 14.4 ± 1.3 mmHg) were included. Four of them presented collapse of the bleeding varix, and one had wall disruption associated with fibrosis secondary to prior banding. We were able to stop AVH in all patients without clip-related adverse events during a 30-day follow-up period. Two patients developed solid food dysphagia after 3 months of clip deployment that resolved after removal using a bipolar cutting device. Twin grasper or anchor were not used to aid or facilitate the approximation of opposite edges in any patient. No additional local therapies or new endoscopic session for variceal eradication were required. This case series shows preliminary success controlling AVH with OTSC after EBL failure in patients with small varices. Esophageal dysphagia may appear as a complication during follow up but it can be resolved by clip removal.

Novel clip applicator for minimally invasive surgery.

BACKGROUND: Ligation clips are used ubiquitously throughout minimally invasive surgery for apposition of tissues. Their size limits their application beyond ligation of small tubular structures. A novel clip and clip applicator that allows for broad-area clamping and rotation has been developed by our team. The primary aim of this study is to provide preliminary data assessing tensile strength of the clip across apposed segments of bowel. METHODS: A comparative study evaluating the maximum load (N) held across two apposed tissues by (a) our novel broad-area clip and (b) a conventional commercial clip was performed. Two sections of porcine bowel were clamped together and the maximum load (N) was measured using a tensile strength material testing machine. A preliminary experiment comparing staple line leak pressures in a porcine model ± clip enforcement of staple line was also conducted. p < 0.05 determined statistical significance. RESULTS: Twenty-four samples (intervention = 15; control = 9) of porcine bowel annealed by surgical clips were tested. The mean maximum force withheld by the bowel and staples was greater for our novel clip design (2.043 ± 0.831 N) than the control clip (1.080 ± 0.466 N, p = 0.004). Ten staple line (intervention = 5; control = 5) pressures of porcine bowel were measured. There was no statistically significant difference between the leak pressures with clip reinforcement (84.8 mmHg; range 71.8-109.8 mmHg), or without (54.1 mmHg; range 26.3-98.9 mmHg). CONCLUSION: These preliminary results suggest that our novel clip is able to withstand higher tensile force across tissues compared to a leading commercial clip. A small preliminary trial of effect on leak pressures demonstrated no statistical significance; however, increasing reliability of staple line deformation may be a clinically important finding. Whilst further iteration of product design and clinical testing is required, this product may occupy an important clinical niche through staple line reinforcement, enterotomy closure and other applications.