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Annals of the Royal College of Surgeons... Nov 2020Evidence suggests that midline incisions should be closed with the small-bite technique to reduce IH formation. No recommendations exist for the closure of transverse... (Meta-Analysis)
Meta-Analysis
INTRODUCTION
Evidence suggests that midline incisions should be closed with the small-bite technique to reduce IH formation. No recommendations exist for the closure of transverse incisions used in hepatobiliary surgery. This work systematically summarises rates of IH formation and associated technical factors for these transverse incisions.
METHODS
A systematic search was undertaken. Studies describing the incidence of IH were included. Incisions were classified as transverse (two incision types) or hybrid (transverse with midline extension, comprising five incision types). The primary outcome measure was the pooled proportion of IH. Subgroup analysis based on minimum follow-up of two years and a priori definition of IH with clinical and radiological diagnosis was undertaken.
FINDINGS
Thirteen studies were identified and included 5,427 patients; 1,427 patients (26.3%) underwent surgery for benign conditions, 3,465 (63.8%) for malignancy and 535 (9.9%) for conditions that were not stated or classified as 'other'. The pooled incidence of IH was 6.0% (2.0-10.0%) at a weighted mean follow-up of 17.5 months in the transverse group, compared with 15.0% (11.0-19.0%) at a weighted mean follow-up of 42.0 months in the hybrid group ( = 0.045). Subgroup analysis did not demonstrate a statistical difference in IH formation between the hybrid versus transverse groups.
CONCLUSION
Owing to the limitations in study design and heterogeneity, there is limited evidence to guide incision choice and methods of closure in hepatopancreatobiliary surgery. There is an urgent need for a high-quality prospective cohort study to understand the techniques used and their outcomes, to inform future research.
Topics: Biliary Tract Surgical Procedures; Cholecystectomy; Digestive System Diseases; Humans; Incisional Hernia; Liver; Liver Transplantation
PubMed: 32808799
DOI: 10.1308/rcsann.2020.0163 -
PloS One 2020We aimed to systematically review published data on the effectiveness of Institut Georges Lopez-1 (IGL-1) as a preservation solution for kidney and pancreas grafts. A...
We aimed to systematically review published data on the effectiveness of Institut Georges Lopez-1 (IGL-1) as a preservation solution for kidney and pancreas grafts. A systematic literature search of PubMed, Embase, Web of Science, and the Cochrane Library databases was performed. Human studies evaluating the effects of IGL-1 preservation solution in kidney and/or pancreas transplantation were included. Outcome data on kidney and pancreas graft function were extracted. Of 1513 unique articles identified via the search strategy, four articles could be included in the systematic review. Of these, two retrospective studies reported on the outcome of IGL-1 compared to University of Wisconsin (UW) solution in kidney transplantation. These show kidneys preserved in IGL-1 had improved early function (2 weeks post-transplant) compared to UW. Follow-up was limited to 1 year and showed similar graft and patient survival rates when reported. Two case series described acceptable early outcomes (up to 1 month) of simultaneous kidney pancreas transplantation after storage in IGL-1. As only four clinical papers were identified, we widened our search to include four eligible large animal studies. Three compared IGL-1 with UW in pig kidney transplant models with inconclusive or mildly positive results. One pig pancreas transplant study suggested better early outcome with IGL-1 compared to UW. Too few published data are available to allow any firm conclusions to be drawn on the effectiveness of IGL-1 as a preservation solution of kidney and pancreas grafts. The limited available data show satisfactory early outcomes though no medium to long-term outcomes have been described. Further well-designed clinical studies are needed.
Topics: Animals; Humans; Kidney; Kidney Transplantation; Organ Preservation; Organ Preservation Solutions; Pancreas; Pancreas Transplantation
PubMed: 32240262
DOI: 10.1371/journal.pone.0231019 -
HPB : the Official Journal of the... Mar 2020Hypovolemic phlebotomy (HP) is a novel intervention that involves intraoperative removal of whole blood (7-10 mL/kg) without volume replacement. The subsequent central... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Hypovolemic phlebotomy (HP) is a novel intervention that involves intraoperative removal of whole blood (7-10 mL/kg) without volume replacement. The subsequent central venous pressure (CVP) reduction is hypothesized to decrease blood loss and the need for blood transfusion. The objective was to conduct a systematic assessment of the safety and efficacy of HP on blood loss and transfusion in the liver surgery literature.
METHODS
MEDLINE, EMBASE, and Cochrane Library databases were searched. Outcomes of interest included blood loss, allogenic red blood cell transfusion, postoperative adverse events, and CVP change. A qualitative synthesis and meta-analysis were performed as appropriate.
RESULTS
Four cohort studies, one case series, and three randomized controlled trials involving 2255 patients were included. Meta-analysis of studies involving liver resections for any indication (n = 6) found no difference in transfusion (OR 0.38, p = 0.12) or incidence of adverse events with HP compared to non-use. Pooling of studies involving liver resections for an underlying pathology (n = 4) revealed HP was associated with significant reduction in transfusion (OR 0.25, p = 0.03) but no differences in blood loss (-173 mL, p = 0.17).
CONCLUSION
This review suggests HP is safe and associated with decreased transfusion in patients undergoing liver surgery. It supports further investigation.
Topics: Blood Loss, Surgical; Blood Transfusion; Hepatectomy; Humans; Hypovolemia; Phlebotomy; Treatment Outcome
PubMed: 31734240
DOI: 10.1016/j.hpb.2019.10.001 -
Journal of Tissue Engineering 2019A bioartificial endocrine pancreas is proposed as a future alternative to current treatment options. Patients with insulin-secretion deficiency might benefit. This is... (Review)
Review
A bioartificial endocrine pancreas is proposed as a future alternative to current treatment options. Patients with insulin-secretion deficiency might benefit. This is the first systematic review that provides an overview of scaffold materials and techniques for insulin-secreting cells or cells to be differentiated into insulin-secreting cells. An electronic literature survey was conducted in PubMed/MEDLINE and Web of Science, limited to the past 10 years. A total of 197 articles investigating 60 different materials met the inclusion criteria. The extracted data on materials, cell types, study design, and transplantation sites were plotted into two evidence gap maps. Integral parts of the tissue engineering network such as fabrication technique, extracellular matrix, vascularization, immunoprotection, suitable transplantation sites, and the use of stem cells are highlighted. This systematic review provides an evidence-based structure for future studies. Accumulating evidence shows that scaffold-based tissue engineering can enhance the viability and function or differentiation of insulin-secreting cells both in vitro and in vivo.
PubMed: 31700597
DOI: 10.1177/2041731419884708 -
Cancers Nov 2019Ablative techniques provide in patients with locally advanced pancreatic cancer (LAPC) symptomatic relief, survival benefit and potential downsizing. Irreversible... (Review)
Review
BACKGROUND
Ablative techniques provide in patients with locally advanced pancreatic cancer (LAPC) symptomatic relief, survival benefit and potential downsizing. Irreversible Electroporation (IRE) represents potentially an ideal solution as no thermal tissue damage occurs. The purpose of this review is to present an overview on safety, feasibility, oncological results, survival and quality of life improvement obtained by IRE.
METHODS
A systematic search was performed in PubMed, regarding the use of IRE on PC in humans for studies published in English up to March 2019.
RESULTS
15 original studies embodying 691 patients with unresectable LAPC who underwent IRE were included. As emerged, IRE works better on tumour sizes between 3-4 cm. Oncological results are promising: median OS from diagnosis or treatment up to 27 months. Two groups investigated borderline resectable tumours treated with IRE before resection with margin attenuation, whereas IRE has proved to be effective in pain control.
CONCLUSIONS
Electroporation is bringing new hopes in LAPC management. The first aim of IRE is to offer a palliative treatment. Further efforts are needed for patient selection, as well as the use of IRE for 'margin accentuation' during surgical resection. Even if promising, IRE needs to be validated in large, randomized, prospective series.
PubMed: 31684186
DOI: 10.3390/cancers11111718 -
Fecal microbiota transplantation in irritable bowel syndrome: A systematic review and meta-analysis.United European Gastroenterology Journal Oct 2019Modulating gut microbiota is a potential treatment for irritable bowel syndrome (IBS). This meta-analysis explored whether fecal microbiota transplantation (FMT) is... (Comparative Study)
Comparative Study Meta-Analysis
BACKGROUND
Modulating gut microbiota is a potential treatment for irritable bowel syndrome (IBS). This meta-analysis explored whether fecal microbiota transplantation (FMT) is successful in treating IBS.
METHODS
A systematic review was performed to find trials on FMT in IBS. Ratios and relative ratios (RR) of improvement for single-arm trials (SATs) and randomized controlled trials (RCTs) were calculated, respectively. Changes in IBS Severity Scoring System (IBS-SSS) and IBS Quality of Life (IBS-QOL) instrument compared to baseline in FMT versus placebo groups were pooled.
RESULTS
In SATs, 59.5% (95% confidence interval (CI) 49.1-69.3) of IBS patients showed significant improvement. In RCTs, there were no differences between FMT and control in improvement (RR=0.93 (95% CI 0.50-1.75)) or changes in the IBS-SSS and IBS-QOL.
CONCLUSIONS
FMT was not effective in IBS. Variations in FMT methods and patient factors may contribute to the heterogeneous results of the trials.
Topics: Adult; Colonoscopy; Duodenoscopy; Dysbiosis; Fecal Microbiota Transplantation; Female; Gastrointestinal Microbiome; Gastroscopy; Humans; Irritable Bowel Syndrome; Male; Middle Aged; Placebos; Quality of Life; Randomized Controlled Trials as Topic; Severity of Illness Index
PubMed: 31662860
DOI: 10.1177/2050640619866990 -
World Journal of Gastroenterology Oct 2019Laparoscopy has been widely used in general surgical procedures, but total laparoscopic pancreaticoduodenectomy (TLPD) is still a complex and challenging surgery that is... (Comparative Study)
Comparative Study Meta-Analysis
BACKGROUND
Laparoscopy has been widely used in general surgical procedures, but total laparoscopic pancreaticoduodenectomy (TLPD) is still a complex and challenging surgery that is only performed in a small number of patients at a few large academic medical centers. Although the safety and feasibility of TLPD have been established, few studies have compared it with open pancreaticoduodenectomy (OPD) with regard to perioperative and oncological outcomes. Therefore, we carried out a meta-analysis to evaluate whether TLPD is superior to OPD.
AIM
To compare the treatment outcomes of TLPD and OPD in order to assess the safety and feasibility of TLPD.
METHODS
We conducted a systematic search of studies comparing TLPD with OPD that were published in the PubMed, EMBASE, and Cochrane Library databases through December 31, 2018. The studies comparing TLPD and OPD with at least one of the outcomes we were interested in and with more than 10 cases in each group were included in this analysis. The Newcastle-Ottawa scale was used to assess the quality of the nonrandomized controlled trials and the Jadad scale was used to assess the randomized controlled trials. Intraoperative data, postoperative complications, and oncologic outcomes were evaluated. The meta-analysis was performed using Review Manager Software version 5.3. Random or fixed-effects meta-analyses were undertaken to measure the pooled estimates.
RESULTS
A total of 4790 articles were initially identified for our study. After screening, 4762 articles were excluded and 28 studies representing 39771 patients (3543 undergoing TLPD and 36228 undergoing OPD) were eventually included. Patients who underwent TLPD had less intraoperative blood loss [weighted mean difference (WMD) = -260.08 mL, 95% confidence interval (CI): (-336.02, -184.14) mL, < 0.00001], a lower blood transfusion rate [odds ratio (OR) = 0.51, 95%CI: 0.36-0.72, = 0.0001], a lower perioperative overall morbidity (OR = 0.82, 95%CI: 0.73-0.92, = 0.0008), a lower wound infection rate (OR = 0.48, 95%CI: 0.34-0.67, < 0.0001), a lower pneumonia rate (OR = 0.72, 95%CI: 0.60-0.85, = 0.0002), a shorter duration of intensive care unit (ICU) stay [WMD = -0.28 d, 95%CI (-2.88, -1.29) d, < 0.00001] and a shorter length of hospital stay [WMD = -3.05 d, 95%CI (-3.93, -2.17), < 0.00001], a lower rate of discharge to a new facility (OR = 0.55, 95%CI: 0.39-0.78, = 0.0008), and a lower 30-d readmission rate (OR = 0.81, 95%CI: 0.68-0.95, = 0.10) than those who underwent OPD. In addition, the TLPD group had a higher R0 rate (OR = 1.28, 95%CI: 1.13-1.44, = 0.0001) and more lymph nodes harvested (WMD = 1.32, 95%CI: 0.57-2.06, = 0.0005) than the OPD group. However, the patients who underwent TLPD experienced a significantly longer operative time (WMD = 77.92 min, 95%CI: 40.89-114.95, < 0.0001) and had a smaller tumor size than those who underwent OPD [WMD = -0.32 cm, 95%CI: (-0.58, -0.07) cm, = 0.01]. There were no significant differences between the two groups in the major morbidity, postoperative pancreatic fistula, delayed gastric emptying, postpancreatectomy hemorrhage, bile leak, gastroenteric anastomosis fistula, intra-abdominal abscess, bowel obstruction, fluid collection, reoperation, ICU admission, or 30-d and 90-d mortality rates. For malignant tumors, the 1-, 2-, 3-, 4- and 5-year overall survival rates were not significantly different between the two groups.
CONCLUSION
This meta-analysis indicates that TLPD is safe and feasible, and may be a desirable alternative to OPD, although a longer operative time is needed and only smaller tumors can be treated.
Topics: Blood Transfusion; Clinical Trials as Topic; Disease-Free Survival; Feasibility Studies; Hospital Mortality; Humans; Laparoscopy; Neoplasm Recurrence, Local; Operative Time; Pancreas; Pancreatic Neoplasms; Pancreaticoduodenectomy; Postoperative Complications; Tumor Burden
PubMed: 31602170
DOI: 10.3748/wjg.v25.i37.5711 -
Journal of Diabetes Science and... Jan 2020Pancreas transplantation is currently one of the best treatments proposed in highly selected patients with unstable and brittle type 1 diabetes. The objective of...
INTRODUCTION
Pancreas transplantation is currently one of the best treatments proposed in highly selected patients with unstable and brittle type 1 diabetes. The objective of pancreas transplantation is to restore normoglycemia and avoid the occurrence of complications associated with diabetes. Graft pancreatitis and thrombosis, arising from ischemia reperfusion injuries, are major causes of graft loss in the postoperative period. Ex situ perfusion, in hypothermic or normothermic settings, allowed to improve ischemic reperfusion injury in other organ transplantations (kidney, liver, or lung). The development of pancreatic graft perfusion techniques would limit these ischemic reperfusion injuries.
OBJECTIVE
Evaluation of the safety and feasibility of ex situ perfusion of pancreas for whole-organ transplantation.
METHODS
English literature about pancreas perfusion was analyzed using electronic database Medline via PubMed (1950-2018). Exclusion criteria were studies that did not specify the technical aspects of machine perfusion and studies focused only on pancreas perfusion for islet isolation.
RESULTS
Hypothermic machine perfusion for pancreas preservation has been evaluated in nine studies and normothermic machine perfusion in ten studies. We evaluated machine perfusion model, types of experimental model, anatomy, perfusion parameters, flushing and perfusion solution, length of perfusion, and comparison between static cold storage and perfusion.
CONCLUSIONS
This review compared ex vivo machine perfusion of experimental pancreas for whole-organ transplantation. Pancreas perfusion is feasible and could be a helpful tool to evaluate pancreas prior to transplantation. Pancreas perfusion (in hypothermic or normothermic settings) could reduce ischemic reperfusion injuries, and maybe could avoid pancreas thrombosis and reduce morbidity of pancreas transplantation.
Topics: Feasibility Studies; Humans; Pancreas; Pancreas Transplantation; Perfusion
PubMed: 31409133
DOI: 10.1177/1932296819869312