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1.
Comparative Analysis of Hemostatic Efficacy: Local Application of Lancehead Snake Venom Thrombin versus Hemostatic Forceps in Colon Polypectomy
Chen, D., Kou, J., Zhang, J.
Alternative therapies in health and medicine. 2024
Abstract
BACKGROUND Colon polypectomy often involves managing bleeding, and the choice of hemostatic methods is critical for patient outcomes. This study addresses the hemostatic effects of lancehead snake venom thrombin compared to hemostatic forceps in the context of colon polypectomy. OBJECTIVE To compare and assess the effectiveness and safety of local application of lancehead snake venom thrombin and hemostatic forceps in achieving hemostasis during colon polypectomy. DESIGN A randomized controlled trial was conducted to investigate and compare the hemostatic outcomes of two different approaches in colon polypectomy. SETTING The study was conducted at the Affiliated Hospital of Hebei University Hospital from January 2022 to June 2022. PARTICIPANTS A total of 80 patients with colon polyps who met the inclusion criteria were randomly assigned to either the lancehead snake venom thrombin group or the hemostatic forceps group. INTERVENTIONS In the hemostatic forceps group, hemostatic forceps were employed to seal the wound post-polyp resection. In the lancehead snake venom thrombin group, aluminium potassium sulfate gel, in conjunction with locally sprayed lancehead snake venom thrombin, was applied to the wound. PRIMARY OUTCOME MEASURES The study assessed (1) intraoperative immediate bleeding and hemostasis; (2) intraoperative hemostasis time; (3) postoperative delayed post-polypectomy bleeding (DPPB); and (4) adverse reactions as primary outcome measures. RESULTS No significant differences were observed in the incidence rate of intraoperative immediate bleeding and the success rate of intraoperative hemostasis between the two groups. The lancehead snake venom thrombin group exhibited a shorter intraoperative hemostasis time and a lower incidence rate of adverse reactions compared to the hemostatic forceps group. No significant difference was found in the incidence rate of postoperative DPPB between the two groups. CONCLUSION Local application of lancehead snake venom thrombin proves to be more effective and safer than hemostatic forceps in promptly managing bleeding during colon polypectomy.
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2.
Low versus standard central venous pressure during laparoscopic liver resection: A systematic review, meta-analysis and trial sequential analysis
Stephanos, M., Stewart, C. M. B., Mahmood, A., Brown, C., Hajibandeh, S., Hajibandeh, S., Satyadas, T.
Annals of hepato-biliary-pancreatic surgery. 2024
Abstract
To compare the outcomes of low central venous pressure (CVP) to standard CVP during laparoscopic liver resection. The study design was a systematic review following the PRISMA statement standards. The available literature was searched to identify all studies comparing low CVP with standard CVP in patients undergoing laparoscopic liver resection. The outcomes included intraoperative blood loss (primary outcome), need for blood transfusion, mean arterial pressure, operative time, Pringle time, and total complications. Random- effects modelling was applied for analyses. Type I and type II errors were assessed by trial sequential analysis (TSA). A total of 8 studies including 682 patients were included (low CVP group, 342; standard CVP group, 340). Low CVP reduced intraoperative blood loss during laparoscopic liver resection (mean difference [MD], -193.49 mL; 95% confidence interval [CI], -339.86 to -47.12; p = 0.01). However, low CVP did not have any effect on blood transfusion requirement (odds ratio [OR], 0.54; 95% CI, 0.28-1.03; p = 0.06), mean arterial pressure (MD, -1.55 mm Hg; 95% CI, -3.85-0.75; p = 0.19), Pringle time (MD, -0.99 minutes; 95% CI, -5.82-3.84; p = 0.69), operative time (MD, -16.38 minutes; 95% CI, -36.68-3.39; p = 0.11), or total complications (OR, 1.92; 95% CI, 0.97-3.80; p = 0.06). TSA suggested that the meta-analysis for the primary outcome was not subject to type I or II errors. Low CVP may reduce intraoperative blood loss during laparoscopic liver resection (moderate certainty); however, this may not translate into shorter operative time, shorter Pringle time, or less need for blood transfusion. Randomized controlled trials with larger sample sizes will provide more robust evidence.
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3.
Temporary Portocaval Shunt Provides Superior Intra-operative Hemodynamics and Reduces Blood Loss and Duration of Surgery in Live Donor Liver Transplantation: A Randomized Control Trial
Yl, M. K., Patil, N. S., Mohapatra, N., Sindwani, G., Dhingra, U., Yadav, A., Kale, P., Pamecha, V.
Annals of surgery. 2024
Abstract
OBJECTIVE The primary objectives were to compare intra operative hemodynamic parameters, blood loss, renal function, and duration of surgery with and without TPCS in live donor liver transplantation (LDLT) recipients. Secondary objectives were post-operative early graft dysfunction (EGD), morbidity, mortality, total ICU and hospital stay. BACKGROUND Blood loss during recipient hepatectomy for liver transplantation (LT) remains a major concern. Routine use of temporary portocaval shunt (TPCS) during LT is not yet elucidated. METHODS A single centre, open label, randomized control trial. The sample size was calculated based on intraoperative blood loss. After exclusion, a total of 60 patients, 30 in each arm (TPCS versus no TPCS) were recruited in the trial. RESULTS The baseline recipient and donor characteristics were comparable between the groups. The median intra-operative blood loss (P = 0.004) and blood product transfusions (P<0.05) were significantly less in TPCS group. TPCS group had significantly improved intraoperative hemodynamics in anhepatic phase as compared to no-TPCS group (P<0.0001), requiring significantly less vasopressor support. This led to significantly better renal function as evidenced by higher intraoperative urine output in TPCS group (P=0.002). Because of technical simplicity, TPCS group had significantly fewer IVC injuries (3.3 vs. 26.7%, P=0.026) and substantially shorter hepatectomy time and total duration of surgery (529.4 ± 35.54 vs. 606.83 ± 48.13 mins, P<0.0001). ). Time taken for normalisation of lactate in the immediate post-operative period was significantly shorter in TPCS group (median, 6 h vs. 13 h; P=0.04). Although post-operative endotoxemia, major morbidity, 90day mortality, total ICU and hospital stay were comparable between both the groups, tolerance to enteral feed was earlier in the TPCS group. CONCLUSION In LDLT, TPCS is a simple and effective technique that provides superior intraoperative hemodynamics and reduces blood loss and duration of surgery.
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4.
Twenty-years of Embolization for Acute Lower Gastrointestinal Bleeding: A Meta-analysis of Rebleeding and Ischemia Rates
Yu, Q., Funaki, B., Ahmed, O.
The British journal of radiology. 2024
Abstract
BACKGROUND Transarterial embolization (TAE) for acute lower gastrointestinal bleeding (LGIB) can be technically challenging due to the compromise between achieving hemostasis and causing tissue ischemia. The goal of the present study is to determine its technical success, rebleeding, and post-embolization ischemia rates through meta-analysis of published literature in the last twenty-years. MATERIALS AND METHODS PubMed, Embase, and Cochrane Library databases were queried. Technical success, rebleeding, and ischemia rates were extracted. Baseline characteristics such as author, publication year, region, study design, embolization material, percentage of superselective embolization were retrieved. Subgroup analysis was performed based on publication time and embolization agent. RESULTS A total of 66 studies including 2121 patients who underwent embolization for acute LGIB were included. Endoscopic management was attempted in 34.5%. The pooled overall technical success, rebleeding, post-embolization ischemia rates were 97.0%, 20.7%, and 7.5%, respectively. Studies published after 2010 showed higher technical success rates (97.8% vs 95.2%), lower rebleeding rates (18.6% vs 23.4%), and lower ischemia rates (7.3% vs 9.7%). Compared to microcoils, NBCA was associated with a lower rebleeding rate (9.3% vs 20.8%) at the expense of a higher post-embolization ischemia rate (9.7% vs 4.0%). Coagulopathy (p = 0.034), inotropic use (p = 0.040), and malignancy (p = 0.002) were predictors of post-embolization rebleeding; hemorrhagic shock (p < 0.001), inotropic use (p = 0.026), malignancy (p < 0.001), coagulopathy (p = 0.002), blood transfusion (p < 0.001), and enteritis (p = 0.023) were predictors of mortality. Empiric embolization achieved a similarly durable hemostasis rate to targeted embolization (23.6% vs 21.1%) but a higher risk of post-embolization ischemia (14.3% vs 4.7%). CONCLUSION For LGIB, TAE has a favorable technical success rate and low risk of post-embolization ischemia. Its safety and efficacy profile has increased over the last decade. Compared to microcoils, NBCA seemed to offer a more durable hemostasis rate at the expense of higher ischemia risk. Due to the heterogeneity of currently available evidence, future prospective and comparative studies are warranted.
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5.
Efficacy of New Hemostatic Techniques in Nonvariceal Gastrointestinal Bleeding: A Systematic Review and Network Meta-analysis
Liu K, Gao L, Bai J, Wang L, Zhu S, Zhao X, Han Y, Liu Z
Journal of digestive diseases. 2023
Abstract
OBJECTIVE This systematic review and network meta-analysis aimed to assess the relative efficacy of currently multiple hemostatic modalities in nonvariceal gastrointestinal bleeding (NVGIB). BACKGROUND Nonvariceal gastrointestinal bleeding is a frequent medical condition with significant mortality and morbidity. There are currently multiple hemostatic modalities, but their relative efficacy is still unknown. METHODS Major databases including PubMed, EMBASE and the Cochrane Library were searched for studies that compared the relative efficacy of different hemostatic techniques for NVGIB (over-the-scope-clip (OTSC), hemostatic powder (HP) and conventional endoscopic treatment (CET)). The 30-day rebleeding rate was the primary outcome. We performed pairwise and network meta-analyses for all treatments. The heterogeneity and transitivity were evaluated. RESULTS Twenty-two studies were included. OTSC and HP + CET showed superior efficacy compared with CET (OTSC vs CET: RR, 0.42 [95% CI, 0.28-0.60]; HP + CET vs CET: RR, 0.40 [95% CI, 0.17-0.87]) while their relative efficacy had not detected any statistically significant difference (OTSC vs HP + CET: RR, 0.95 [95% CI, 0.38-2.31]) in the 30-day rebleeding rate. HP + CET was ranked highest in the network ranking estimate. In addition, the sensitivity analysis showed that it was not robust that OTSC was superior to CET in the short-term rebleeding rate and the initial hemostasis rate. None of the other comparisons found a statistically significant difference. CONCLUSIONS This systematic review and network meta- analysis showed that OTSC and HP + CET significantly reduced 30-day rebleeding rates compared to CET and had similar efficacy. This article is protected by copyright. All rights reserved.
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6.
Seamguard Buttressing of the Staple Line During Laparoscopic Sleeve Gastrectomy Appears to Decrease the Incidence of Postoperative Bleeding, Leaks, and Reoperations. A Systematic Review and Meta-Analysis of Non-Randomized Comparative Studies
Diab AF, Alfieri S, Doyle W, Koussayer B, Docimo S, Sujka JA, DuCoin CG
Obesity surgery. 2023
Abstract
Leaks and bleeding are major acute postoperative complications following laparoscopic sleeve gastrectomy (LSG). Various staple line reinforcement (SLR) methods have been invented such as oversewing/suturing (OS/S), omentopexy/gastropexy (OP/GP), gluing, and buttressing. However, many surgeons do not use any type of reinforcement. On the other hand, surgeons who use a reinforcement method are often confused of what kind of reinforcement they should use. No robust and high-quality data supports the use of one reinforcement over the other or even supports the use of reinforcement over no-reinforcement. Therefore, SLR is a controversial topic that is worth our focus. The aim of this study is to compare the outcomes of LSG with versus without Seamguard buttressing of the staple line during LSG.
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7.
Over-the-Scope Clips Versus Standard Endoscopic Treatment for First Line Therapy of Non-variceal Upper Gastrointestinal Bleeding: Systematic Review and Meta-Analysis
Faggen AE, Kamal F, Lee-Smith W, Khan MA, Sharma S, Acharya A, Ahmed Z, Farooq U, Bayudan A, McLean R, et al
Digestive diseases and sciences. 2023
Abstract
BACKGROUND AND AIMS Over-The-Scope Clips (OTSC) use have shown promising results for first line treatment of non-variceal upper gastrointestinal bleeding (NVUGIB). We conducted this meta-analysis to compare outcomes in patients treated with OTSC versus standard endoscopic intervention for first line endoscopic treatment of NVUGIB. METHODS We reviewed several databases from inception to December 9, 2022 to identify studies comparing OTSC and standard treatments as the first line treatment for NVUGIB. The outcomes assessed included re-bleeding, initial hemostasis, need for vascular embolization, mortality, need for repeat endoscopy, 30 day readmission rate, and need for surgery. Pooled risk ratios (RR) with 95% confidence intervals (CI) were calculated using random effect model. Heterogeneity was assessed by I(2) statistic. RESULTS We included 11 studies with 1608 patients (494 patients in OTSC group and 1114 patients in control group). OTSC use was associated with significantly lower risk of re-bleeding (RR, 0.58; 95% CI 0.41-0.82). We found no significant difference in rates of initial hemostasis (RR, 1.05; 95% CI 0.99- 1.11), vascular embolization rates (RR, 0.93; 95% CI 0.40- 2.13), need for repeat endoscopy (RR, 0.78; 95% CI 0.40-1.49), 30 day readmission rate (RR, 0.59; 95% CI 0.17-2.01), need for surgery (RR, 0.81; 95% CI 0.29-2.28) and morality (RR, 0.69; 95% CI 0.38-1.23). CONCLUSIONS OTSC are associated with significantly lower risk of re-bleeding compared to standard endoscopic treatments when used as first line endoscopic therapy for NVUGIB.
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8.
Topical hemostatic agents in the management of upper gastrointestinal bleeding: a meta-analysis
Alali AA, Moosavi S, Martel M, Almadi M, Barkun AN
Endoscopy international open. 2023;11(4):E368-e385
Abstract
Background and study aims Novel topical hemostatic agents have shown promising results in treating patients with non-variceal upper gastrointestinal bleeding (NVUGIB). However, data are limited even in published meta-analyses as to their role, especially compared to conventional endoscopic approaches. The aim of this study was to perform a highly comprehensive systematic review assessing the effectiveness of topical hemostatic agents in UGIB in different clinical settings. Methods We performed a literature search of OVID MEDLINE, EMBASE, and ISI Web of Knowledge databases through September 2021. Studies assessing the efficacy of topical hemostatic agents in UGIB were included. Main outcomes were immediate hemostasis and overall rebleeding. Results A total of 980 citations were identified and 59 studies with a total of 3,417 patients were included in the analysis. Immediate hemostasis was achieved in 93 % (91 %; 94 %), with similar results according to etiology (NVUGIB vs. variceal), topical agent used, or treatment strategy (primary vs. rescue). The overall rebleeding rate was 18 % (15%; 21 %) with the majority of rebleeds occurring in the first 7 days. Among comparative studies, topical agents achieved immediate hemostasis more often than standard endoscopic modalities (OR 3.94 [1.73; 8.96), with non-different overall rebleeding odds (OR 1.06 [0.65; 1.74]). Adverse events occurred in 2 % (1 %; 3 %). Study quality was overall low to very low. Conclusions Topical hemostatic agents are effective and safe in the management of UGIB with favorable outcomes when compared to conventional endoscopic modalities across a variety of bleeding etiologies. This is especially true in novel subgroup analyses that assessed immediate hemostasis and rebleeding among RCTs and in malignant bleeding. Due to methodological limitations of available data, additional studies are needed to ascertain their effectiveness more confidently in the management of patients with UGIB.
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9.
Polyethylene glycol-coated haemostatic patch for prevention of clinically relevant postoperative pancreatic fistula after pancreatoduodenectomy: randomized clinical trial
Serradilla-Martin M, Paterna-Lopez S, Palomares-Cano A, Cantalejo-Diaz M, Abadia-Forcen T, Gutierrez-Diez ML, Artigas-Marco C, Serrablo-Requejo A
BJS open. 2023;7(2)
Abstract
BACKGROUND The potential of haemostatic patches to reduce the rate of postoperative pancreatic fistula remains unclear. The aim of this trial was to evaluate the impact of a polyethylene glycol-coated haemostatic patch on the incidence of clinically relevant postoperative pancreatic fistula after pancreatoduodenectomy. METHODS In this randomized, single-centre, clinical trial, patients undergoing pancreatoduodenectomy were randomized 1 : 1 to receive pancreatojejunostomy reinforced with two polyethylene glycol-coated haemostatic patches (patch group) or without any reinforcement (control group). The primary outcome was clinically relevant postoperative pancreatic fistula, defined as grade B/C according to International Study Group of Pancreatic Surgery criteria, within 90 days. Key secondary outcomes were length of hospital stay, total rate of postoperative pancreatic fistula, and overall complication rate. RESULTS From 15 May 2018 to 22 June 2020, 72 patients were randomized, and 64 were included in the analyses (31 in the patch group and 33 in the control group). The risk of clinically relevant postoperative pancreatic fistula was reduced by 90 per cent (OR 0.10, 95 per cent c.i. 0.01 to 0.89, P = 0.039). Moreover, the use of the polyethylene glycol-coated patch retained its protective effect on clinically relevant postoperative pancreatic fistula in a multivariable regression model, significantly reducing the risk of clinically relevant postoperative pancreatic fistula by 93 per cent (OR 0.07, 95 per cent c.i. 0.01 to 0.67, P = 0.021), regardless of patient age, sex, or fistula risk score. The incidence of secondary outcomes did not significantly differ between the groups. One patient died within 90 days in the patch group versus three patients in the control group. CONCLUSIONS A polyethylene glycol-coated haemostatic patch reduced the incidence of clinically relevant postoperative pancreatic fistula after pancreatoduodenectomy. REGISTRATION NUMBER NCT03419676 (http://www.clinicaltrials.gov).
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10.
Phlebotomy resulting in controlled hypovolemia to prevent blood loss in major hepatic resections (PRICE-2): study protocol for a phase 3 randomized controlled trial
Martel, G., Lenet, T., Wherrett, C., Carrier, F. M., Monette, L., Workneh, A., Brousseau, K., Ruel, M., Chassé, M., Collin, Y., et al
Trials. 2023;24(1):38
Abstract
INTRODUCTION Blood loss and red blood cell (RBC) transfusion in liver surgery are areas of concern for surgeons, anesthesiologists, and patients alike. While various methods are employed to reduce surgical blood loss, the evidence base surrounding each intervention is limited. Hypovolemic phlebotomy, the removal of whole blood from the patient without volume replacement during liver transection, has been strongly associated with decreased bleeding and RBC transfusion in observational studies. This trial aims to investigate whether hypovolemic phlebotomy is superior to usual care in reducing RBC transfusions in liver resection. METHODS This study is a double-blind multicenter randomized controlled trial. Adult patients undergoing major hepatic resections for any indication will be randomly allocated in a 1:1 ratio to either hypovolemic phlebotomy and usual care or usual care alone. Exclusion criteria will be minor resections, preoperative hemoglobin <100g/L, renal insufficiency, and other contraindication to hypovolemic phlebotomy. The primary outcome will be the proportion of patients receiving at least one allogeneic RBC transfusion unit within 30 days of the onset of surgery. Secondary outcomes will include transfusion of other allogeneic blood products, blood loss, morbidity, mortality, and intraoperative physiologic parameters. The surgical team will be blinded to the intervention. Randomization will occur on the morning of surgery. The sample size will comprise 440 patients. Enrolment will occur at four Canadian academic liver surgery centers over a 4-year period. Ethics approval will be obtained at participating sites before enrolment. DISCUSSION The results of this randomized control trial will provide high-quality evidence regarding the use of hypovolemic phlebotomy in major liver resection and its effects on RBC transfusion. If proven to be effective, this intervention could become standard of care in liver operations internationally and become incorporated within perioperative patient blood management programs. TRIAL REGISTRATION ClinicalTrials.gov NCT03651154 . Registered on August 29 2018.