Efficiency of complete omentectomy in patients with resectable gastric cancer: a meta‑analysis and systematic review

Abstract Background We performed a meta-analysis to investigate the efficacy of complete omentectomy (CO) in patients undergoing radical gastrectomy for gastric cancer. Methods We conducted a literature search in PubMed, Web of Science, and the Cochrane Library databases for clinical research that compared CO with non-complete omentectomy (NCO). These articles were published prior to April 2021. Overall survival (OS) rates, relapse-free survival (RFS) rates, recurrence rates, operation times, estimates of blood loss, numbers of harvested lymph nodes, complications, and lengths of hospital stays were compared using relative risks (RRs) and weighted mean differences (WMDs). RevMan 5.3 software was used for statistical analysis. Results Nine studies that included 3329 patients (1960 in the CO group) and 1369 in the NCO group comprised the analysis. The meta-analysis showed that CO was associated with a decreased 3-year OS rate (RR = 0.94, 95% CI 0.90–0.98, P = 0.005) and 5-year OS rate (RR = 0.93, 95% CI 0.88–0.98, P = 0.007). However, it was not associated with the 3-year RFS rate (RR = 0.97, 95% CI 0.90–1.04, P = 0.44), 5-year RFS (RR = 0.98, 95% CI 0.90–1.06, P = 0.60), or recurrence rate (RR = 1.17, 95% CI 0.95–1.45, P = 0.15) compared to the NCO group. For surgical-related outcomes, significant heterogeneity existed between the studies. Compared to the NCO group, CO was found to be associated with significantly more estimated blood loss (WMD = 250.90, 95% CI 105.90–396.28, P = 0.0007) and less harvested lymph nodes (WMD = − 3.59, 95% CI − 6.88, − 0.29, P = 0.03). Although, there was no significant difference in the surgical time (WMD = 15.93, 95% CI − 0.21, 32.07, P = 0.05). No statistically significant differences were observed in the rates of overall (P = 0.79) and major complications (P = 0.90), or the lengths of hospital stays (P = 0.11) between the two groups. Conclusions Based on the available evidence, CO is not superior to NCO in terms of survival. CO is not recommended as a routine surgery for gastric cancer. Future well-designed high-quality RCTs are warranted.

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Partial Versus Total Omentectomy in Patients with Gastric Cancer: A Systemic Review and Meta-Analysis

Cancers ◽

10.3390/cancers13194971 ◽

2021 ◽

Vol 13 (19) ◽

pp. 4971

Author(s):

Shion Wei Chai ◽

Suo-Hsien Wang ◽

Chih-Yuan Wang ◽

Yi-Chan Chen ◽

Ruey-Shyang Soong ◽

...

Keyword(s):

Gastric Cancer ◽

Overall Survival ◽

Meta Analysis ◽

Disease Free Survival ◽

Systemic Review ◽

Cochrane Library ◽

Free Survival ◽

Significant Difference ◽

Hospital Stays ◽

Disease Free

Background: Surgical treatment is the key to cure localized gastric cancer. There is no strong evidence that supports the value of omentectomy. Thus, a meta-analysis was conducted to compare the safety and efficiency of partial and total omentectomy in patients with gastric cancer. Methods: PubMed, Embase, and Cochrane Library databases were searched. All studies that compared total and partial omentectomy as treatments for gastric cancer were included. The primary outcomes were patients’ overall survival and disease-free survival, while the secondary outcomes were perioperative outcome and postoperative complications. Results: A total of nine studies were examined, wherein 1043 patients were included in the partial omentectomy group, and 1995 in the total omentectomy group. The partial omentectomy group was associated with better overall survival (hazard ratio: 0.80, 95% CI: 0.66 to 0.98, p = 0.04, I2 = 0%), shorter operative time, and lesser blood loss than the total omentectomy group. In addition, no statistically significant difference was observed in the number of dissected lymph nodes, length of hospital stays, complication rate, and disease-free survival. Conclusions: Our results show that, compared with total omentectomy in gastric cancer surgery, partial omentectomy had non-inferior oncological outcomes and comparable safety outcomes.

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Comparison of Retzius-Sparing Robot-Assisted Radical Prostatectomy vs. Conventional Robot-Assisted Radical Prostatectomy: An Up-to-Date Meta-Analysis

Frontiers in Surgery ◽

10.3389/fsurg.2021.738421 ◽

2021 ◽

Vol 8 ◽

Author(s):

Jiang-Nan Xu ◽

Zhen-Yu Xu ◽

Hu-Ming Yin

Keyword(s):

Radical Prostatectomy ◽

Lower Incidence ◽

Meta Analysis ◽

Cochrane Library ◽

Urinary Continence ◽

Robot Assisted ◽

Postoperative Continence ◽

Estimated Blood Loss ◽

Significant Difference ◽

Anterior Prostate

Background: The Retzius space-sparing robot-assisted radical prostatectomy (RS-RARP) has shown better results in urinary continence, but its efficacy and safety compared to conventional robot-assisted radical prostatectomy (c-RARP) remain controversial.Material and Methods: A research was conducted in Medline via PubMed, Cochrane Library, EMBASE, and Web of Science up to January 4, 2021, to identify studies comparing RS-RARP to c-RARP. We used RevMan 5.3 and STATA 14.0 for meta-analysis.Results: A total of 14 studies involving 3,129 participants were included. Meta-analysis showed no significant difference in positive surgical margins (PSMs), but the RS-RARP group had significantly higher PSM rates in the anterior site [odds ratio (OR) = 2.25, 95% CI: 1.22–4.16, P = 0.01]. Postoperative continence in RS-RARP group at 1 month (OR = 5.72, 95% CI: 3.56–9.19, P < 0.01), 3 months (OR = 6.44, 95% CI: 4.50–9.22, P < 0.01), 6 months (OR = 8.68, 95% CI: 4.01–18.82, P < 0.01), and 12 months (OR = 2.37, 95% CI: 1.20–4.70, P = 0.01) was significantly better than that in the c-RARP group. In addition, the RS-RARP group had a shorter console time (mean difference = −16.28, 95% CI: −27.04 to −5.53, P = 0.003) and a lower incidence of hernia (OR = 0.35, 95% CI: 0.19–0.67, P = 0.001). However, there were no significant differences in estimated blood loss, pelvic lymph node dissection rate, postoperative complications, 1-year-biochemical recurrence rate, and postoperative sexual function.Conclusions: Compared with c-RARP, RS-RARP showed better recovery of continence, shorter console time, and lower incidence of hernia. Although there was no significant difference in overall PSM, we suggest that the surgeon should be more careful if the lesion is in the anterior prostate.

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Effects of Preoperative Iodine Administration on Thyroidectomy for Hyperthyroidism: A Systematic Review and Meta-analysis

Otolaryngology ◽

10.1177/0194599819829052 ◽

2019 ◽

Vol 160 (6) ◽

pp. 993-1002 ◽

Cited By ~ 1

Author(s):

Chung-Hsin Tsai ◽

Po-Sheng Yang ◽

Jie-Jen Lee ◽

Tsang-Pai Liu ◽

Chi-Yu Kuo ◽

...

Keyword(s):

Postoperative Complications ◽

Blood Loss ◽

Operative Time ◽

Meta Analysis ◽

Thyroid Volume ◽

Vocal Cord Palsy ◽

Significant Heterogeneity ◽

Intraoperative Blood Loss ◽

Significant Difference ◽

And Control

Objective The current guidelines recommend that potassium iodide be given in the immediate preoperative period for patients with Graves’ disease who are undergoing thyroidectomy. Nonetheless, the evidence behind this recommendation is tenuous. The purpose of this study is to clarify the benefits of preoperative iodine administration from published comparative studies. Data Sources We searched PubMed, Embase, Cochrane, and CINAHL from 1980 to June 2018. Review Methods Studies were included that compared preoperative iodine administration and no premedication before thyroidectomy. For the meta-analysis, studies were pooled with the random-effects model. Results A total of 510 patients were divided into the iodine (n = 223) and control (n = 287) groups from 9 selected studies. Preoperative iodine administration was significantly associated with decreased thyroid vascularity and intraoperative blood loss. Significant heterogeneity was present among studies. We found no significant difference in thyroid volume or operative time. Furthermore, the meta-analysis showed no difference in the risk of postoperative complications, including vocal cord palsy, hypoparathyroidism/hypocalcemia, and hemorrhage or hematoma after thyroidectomy. Conclusion Preoperative iodine administration decreases thyroid vascularity and intraoperative blood loss. Nonetheless, it does not translate to more clinically meaningful differences in terms of operative time and postoperative complications.

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Reconstruction Methods and Complications of Esophagogastrostomy and Jejunal Interposition in Proximal Gastrectomy for Gastric Cancer: A Meta-Analysis

Gastroenterology Research and Practice ◽

10.1155/2020/8179254 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Nan Du ◽

Pei Wu ◽

Pengliang Wang ◽

Yuwei Du ◽

Kai Li ◽

...

Keyword(s):

Gastric Cancer ◽

Lower Risk ◽

Meta Analysis ◽

Proximal Gastrectomy ◽

Operating Time ◽

Perioperative Period ◽

Jejunal Interposition ◽

Cochrane Library ◽

Reconstruction Methods ◽

Significant Difference

Background. Proximal gastrectomy is used for the treatment of primary gastric cancer by open or laparoscopic surgery in the upper third of the stomach. Esophagogastrostomy (EG) or jejunal interposition (JI) is widely used in various reconstruction methods after proximal gastrectomy. We conducted a meta-analysis of EG and JI for treatment of gastric cancer. Materials and Methods. A search of PubMed, Embase, MEDLINE, J-STAGE, and Cochrane Library identified retrospective series on EG and JI. Weight mean differences (WMDs), odds ratios (ORs), and 95% confidence intervals (CIs) were used to analyze the operation-related data and postoperative complications. Heterogeneity was evaluated by the I2 test, and potential publication bias was assessed with Egger regression tests and sensitivity analysis. Results. Eight studies were selected, and 496 patients were included. EG group benefits were 44.81 min shorter operating time (P<0.001), 56.58 mL less blood loss (P=0.03), and 7.4 days shorter hospital stay time (P<0.001) than the JI group. Between the two groups, there was no significant difference in anastomotic leakage; otherwise, the EG group had a lower risk of anastomotic stenosis (OR=0.44, 95%CI=0.20 to 0.97, P=0.04), lower risk of intestinal obstruction (OR=0.07, 95%CI=0.01 to 0.43, P=0.004), and higher risk of reflux esophagitis (OR=2.47, 95%CI=1.07 to 5.72, P=0.03). Conclusion. The results of our study indicated that EG has significant advantages during the perioperative period and in short-term outcomes compared to JI.

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Efficacy of Brucea javanica Oil Emulsion Injection Combined with the Chemotherapy for Treating Gastric Cancer: A Systematic Review and Meta-Analysis

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2018/6350782 ◽

2018 ◽

Vol 2018 ◽

pp. 1-10 ◽

Cited By ~ 4

Author(s):

Jia-Rui Wu ◽

Shu-Yu Liu ◽

Jia-Lian Zhu ◽

Dan Zhang ◽

Kai-Huan Wang

Keyword(s):

Gastric Cancer ◽

Total Effective Rate ◽

Meta Analysis ◽

Performance Status ◽

Effective Rate ◽

Biomedical Literature ◽

Cochrane Library ◽

Oil Emulsion ◽

Brucea Javanica ◽

Significant Difference

Objective. This meta-analysis sought to assess the efficacy and safety of Brucea javanica oil emulsion injection (BJOEI) combined with chemotherapy for treating gastric cancer (GC). Method. Randomized controlled trials (RCTs) regarding BJOEI to treat GC were searched in PubMed, the Cochrane Library, Embase, the China National Knowledge Infrastructure Database (CNKI), the Wan-Fang Database, China Science and Technology Journal Database (VIP), and the Chinese Biomedical Literature Database (SinoMed) up to January 9, 2017. The clinical total effective rate, performance status, adverse drug reactions (ADRs), and other outcomes were analyzed with Review Manager 5.3 and Stata12.0 software. Results. 13 RCTs involving 912 patients were included in the present meta-analysis. The results demonstrated that, compared with receiving chemotherapy alone, BJOEI combined with chemotherapy was more effective in improving clinical total effective rate (RR = 1.38, 95% CI: 1.22~1.56, P<0.00001), performance status (RR = 1.63, 95% CI: 1.30~2.04, P<0.00001), and relieving ADRs such as myelosuppression, neutropenia, thrombopenia, and liver damage. Statistically significant difference was observed between the experimental group and control group. Conclusion. The pooled analysis showed that using BJOEI on the basis of the chemotherapy had a remarkable therapeutic effect for patients with GC, whereas more evidence-based medical researches were required to further support our study.

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Comparison of nephroscopy and cystoscopy used in the treatment of bladder stones: a systematic review and meta-analysis of randomized controlled trials

BMC Surgery ◽

10.1186/s12893-021-01461-3 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Liping Gou ◽

Zhenghao Wang ◽

Ye Zhou ◽

Xiaofeng Zheng

Keyword(s):

Systematic Review ◽

Randomized Controlled Trials ◽

Operative Time ◽

Meta Analysis ◽

Cochrane Library ◽

Controlled Trials ◽

Significant Heterogeneity ◽

Bladder Stones ◽

Randomized Controlled ◽

Significant Difference

Abstract Background A systematic review and meta-analysis was conducted to compare the safety and efficiency of nephroscopy and cystoscopy in transurethral cystolithotripsy (TUCL) for bladder stones (BS). Methods The PubMed, Web of Science, Embase, EBSCO, and Cochrane Library databases were searched up to January 2021 for studies assessing the effect of different types of endoscopes among patients who underwent TUCL. The search strategy and study selection process were in accordance with the PRISMA statement. Results Five randomized controlled trials were included in the meta-analysis. The results showed no difference in stone-free rate (RR = 1.00, CI = 0.98–1.02, p = 1.00) between the two groups and nonsignificant heterogeneity (I2 = 0%, p = 1.00), and all patients were rendered stone free. Use of the nephroscope significantly shortened the operative time compared with the cystoscope group (RR= − 26.26, CI = − 35.84 to − 16.68, p < 0.00001), and there was significant heterogeneity (I2= 87%, p < 0.00001). There was no significant difference in mean urethral entries (RR = 0.66, CI = − 0.71 to − 2.04, p = 0.35), hospitalization (MD = 0.08, 95% CI = − 0.07 to 0.23, p = 0.31) or total complication rate (RR=1.37, 95% CI = 0.47–4.00, p = 0.56) between the two groups. Conclusions In conclusion, this systematic review demonstrates that both nephroscopy and cystoscopy have high stone clearance efficiency, low rates of complications and short hospitalizations. The mean urethral entries depend on the treatment method for large stone fragments. However, the use of nephroscopy can significantly reduce the operative time.

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Robotic Versus Laparoscopic Gastrectomy for Gastric Cancer: A Systematic Review and Meta-Analysis

10.21203/rs.3.rs-84003/v1 ◽

2020 ◽

Author(s):

Jianglei Ma ◽

Xiaoyao Li ◽

Shifu Zhao ◽

Ruifu Zhang ◽

Dejun Yang

Keyword(s):

Gastric Cancer ◽

Systematic Review ◽

Robotic Surgery ◽

Laparoscopic Gastrectomy ◽

Resection Margin ◽

Meta Analysis ◽

Cochrane Library ◽

Long Term Outcomes ◽

Significant Difference

Abstract Background To date, robotic surgery has been widely used worldwide. We conducted a systematic review and meta-analysis to evaluate short- and long-term outcomes of robotic gastrectomy (RG) in gastric cancer patients to determine whether RG can replace laparoscopic gastrectomy (LG).Methods Pubmed, Cochrane Library, WanFang, China National Knowledge Infrastructure (CNKI) and VIP databases were comprehensively searched for studies published before May 2020 that compared RG with LG. Next, two independent reviewers conducted literature screening and data extraction. The quality of the literature was assessed using the Newcastle-Ottawa Scale (NOS),and the data analyzed using the Review Manager 5.3 software. Random effects or fixed effects models were applied according to heterogeneity.Results A total of 19 studies including 7275 patients were included in the meta-analyses, of which 4598 patients were in the LG group and 2677 in the RG group. Compared with LG,RG was associated with longer operative time (WMD=−32.96 min; 95% CI:-42.08~-23.84, P<0.00001),less blood loss (WMD=28.66 ml; 95% CI: 18.59~38.73, P<0.00001),and shorter time to first flatus (WMD=0.16days; 95%CI:0.06~0.27, P=0.003).There was no significant difference between RG and LG in terms of the hospital stay (WMD=0.23days, 95 % CI:-0.53~0.98, P=0.56),overall postoperative complication (OR=1.07, 95 % CI:0.91~1.25, P=0.43),mortality (OR=0.67, 95% CI=0.24~1.90, P=0.45),the number of harvested lymph nodes (WMD=-0.96, 95% CI:-2.12~0.20, P=0.10),proximal resection margin (WMD=-0.10 cm,95% CI:-0.29~0.09, P=0.30),and distal resection margin (WMD=0.15cm,95% CI:-0.21~0.52, P=0.41).No significant differences were found between the two treatments in overall survival(OS) (HR=0.95, 95% CI:0.76~1.18; P=0.64), recurrence-free survival(RFS) (HR=0.91, 95% CI:0.69~1.21;P=0.53), and recurrence rate (OR=0.90, 95% CI:0.67~1.21; P=0.50). Conclusions The results of this study suggested that RG is as acceptable as LG in terms of short-term and long-term outcomes. RG can be performed as effectively and safely as LG. Moreover, more randomized controlled trials comparing the two techniques with rigorous study designs are still essential to evaluate the value of the robotic surgery for gastric cancer.

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Comparison of Survival and Safety Between Total Omentectomy and Partial Omentectomy for Gastric Cancer: A Meta-Analysis

Frontiers in Surgery ◽

10.3389/fsurg.2021.708545 ◽

2021 ◽

Vol 8 ◽

Author(s):

Yue-Xin Zhang ◽

Han-Dong Liu ◽

Ze-Hua Chen ◽

Tao Jin ◽

Jian-Kun Hu ◽

...

Keyword(s):

Gastric Cancer ◽

Blood Loss ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Disease Free Survival ◽

Operation Time ◽

Greater Omentum ◽

Cochrane Library ◽

Intraoperative Blood Loss ◽

Free Survival

Background: The greater omentum can limit abdominal inflammation and act as a protective cushion, but it is always involved in dissemination of gastric cancer. The purpose of this meta-analysis was to compare the survival and safety between total omentectomy and partial omentectomy for gastric cancer.Methods: Two investigators independently conducted a systematic search of PubMed, Embase, CNKI, and Cochrane Library ranging from January 2000 to November 2020. The pooled odds ratio (ORs) and weighted mean difference (WMD) with the 95% confidence interval (95% CI) were used to assess perioperative and survival parameters.Results: A total of 2,031 patients in 11 studies (574 patients in the partial omentectomy group and 1,457 patients in the total omentectomy group) were included. The results found shorter operation time (WMD = −25.584; P = 0.000) and less intraoperative blood loss (WMD = −47.301; P = 0.050) in the partial omentectomy group, compared to total omentectomy. There were no significant differences in terms of incidence of complications (OR = 0.770; P = 0.164), blood transfusions rates (OR = 0.269; P = 0.161), time to first flatus (WMD = 0.160; P = 0.345), hospital stay (WMD = −1.258; P = 0.087), and number of harvested lymph nodes (WMD = 1.265; P = 0.662). For the disease-free survival (OR = 0.80; P = 0.381) and overall survival, there were no statistical differences between the two procedures.Conclusions: The partial omentectomy could reduce operation time and trended to decrease intraoperative blood loss. And the survival in patients with partial omentectomy seemed to be comparable to that of patients with total omentectomy.

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Role of tranexamic acid in endoscopic sinus surgery - a systematic review and meta-analysis

Rhinology Journal ◽

10.4193/rhino13.042 ◽

2013 ◽

Vol 51 (4) ◽

pp. 291-297

Author(s):

V. Pundir ◽

J. Pundir ◽

C. Georgalas ◽

W.J. Fokkens

Keyword(s):

Blood Loss ◽

Tranexamic Acid ◽

Operative Time ◽

Meta Analysis ◽

Sinus Surgery ◽

Estimated Blood Loss ◽

Significant Difference ◽

Field Quality ◽

Surgical Field

Background: The role of tranexamic acid in patients undergoing endoscopic sinus surgery (ESS) is not clearly defined. The aim of our study is to systematically review the existing evidence on the role of tranexamic acid in patients undergoing ESS. Methodology: Systematic search of MEDLINE (1950 - 2013), EMBASE (1980 - 2013), metaRegister, Cochrane Library and ISI conference proceedings was carried out. Results: Five randomised controlled trials with 192 patients receiving tranexamic acid and 196 controls were included. Meta-analysis demonstrated that mean estimated blood loss was significantly lower, and surgical field quality was significantly better in tranexamic acid group. There was no significant difference in mean operative time between the two groups. No significant adverse effects were noted in either of the groups. Conclusion: Intra-operative use of local and systemic tranexamic acid in ESS, results in significantly reduced estimated blood loss and improved surgical field quality. There is no statistically significant difference seen in operative time and incidence of side effects. Well-conducted larger RCTs using validated objective outcome measures and reporting on minor and major complications are required.

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Ankle arthrodesis-Open versus arthroscopic in the Treatment of Ankle Arthritis: A meta-analysis

10.21203/rs.2.18589/v1 ◽

2019 ◽

Author(s):

Tsz Ngai Mok ◽

Qiyu He ◽

Soundarya Panneerselvam ◽

Huige Hou ◽

Huajun Wang ◽

...

Keyword(s):

Blood Loss ◽

Open Surgery ◽

Meta Analysis ◽

Fusion Rate ◽

Functional Improvement ◽

Cochrane Library ◽

Ankle Arthritis ◽

Tourniquet Time ◽

Pooled Data ◽

Estimated Blood Loss

Abstract Background: This study intends in evaluating the comparsion between arthroscopic arthrodesis and open surgery for patients with ankle arthritis by performing a meta-analysis. Methods: A literature search for this meta-analysis was conducted using four English databases (Pubmed, Embase, Medline and the Cochrane Library), up to August 2019. These included two prospective cohort study and 7 retrospective cohort studies, enrolling a total of 507 patients with ankle arthritis. Result: For fusion rate, the pooled data showed significantly higher rate of fusion during the arthroscopic arthrodesis compared with open surgery (odds ratio 0.25, 95% CI 0.11 to 0.57, p = 0.0010). Regarding to the estimated blood loss, the pooled data showed significantly smaller blood losses during arthroscopic arthrodesis as compared with open surgery (WMD 52.04, 95% CI 14.14 to 89.94, p = 0.007). For tourniquet time, the pooled data showed smaller tourniquet time during arthroscopic arthrodesis compared with open surgery (WMD 22.68, 95% CI 1.92 to 43.43, p = 0.03). In the length of stay in the hospital, the pooled data showed less time of hospitalization for patients undergoing arthroscopic arthrodesis compared with open surgery (WMD 1.62, 95% CI 0.97 to 2.26, p < 0.00001). The pooled data showed better recovery for the patients who experienced arthroscopic arthrodesis as compared with open surgery at 1 year (WMD 14.73, 95% CI 6.66 to 22.80, p = 0.0003). Conclusion: For patients with ankle arthritis, arthroscopic arthrodesis seems to be associated with a higher fusion rate, lesser amount of estimated blood loss, shorter tourniquet time, shorter length of hospitalization and better functional improvement at 1 year.

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