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  1. Article ; Online: Comparison of intracorporeal and extracorporeal anastomosis in laparoscopic right colectomy: an updated meta-analysis and trial sequential analysis.

    Perivoliotis, Konstantinos / Tzovaras, George / Tepetes, Konstantinos / Baloyiannis, Ioannis

    Updates in surgery

    2024  Volume 76, Issue 2, Page(s) 375–396

    Abstract: This meta-analysis was conducted to provide updated evidence regarding perioperative safety and efficacy, of IC and EC anastomosis in laparoscopic right colectomies. In this study, the Cochrane Handbook for Systematic Reviews of Interventions and the ... ...

    Abstract This meta-analysis was conducted to provide updated evidence regarding perioperative safety and efficacy, of IC and EC anastomosis in laparoscopic right colectomies. In this study, the Cochrane Handbook for Systematic Reviews of Interventions and the PRISMA guidelines were applied. The study protocol received a PROSPERO registration (CRD42020214596). A systematic literature search of the electronic scholar databases (Medline, Web of Science and Scopus) was performed. To reduce type I error, a trial sequential analysis (TSA) algorithm was introduced. The quality of evidence was evaluated based on the GRADE methodology. In total, 46 studies were included in this meta-analysis, Pooled comparisons and TSA confirmed that IC is superior in terms of incisional hernia (0.29; 95%CI: 0.19, 0.44), open conversion (0.45; 95%CI: 0.30, 0.67), reoperation (0.62; 95%CI: 0.46, 0.84]), LOS (- 0.76; 95%CI: - 1.03, - 0.49), blood loss (- 11.50; 95%CI: - 18.42, - 4.58), and cosmesis (- 1.71; 95%CI: - 2.01, - 1.42). Postoperative pain and return of bowel function were, also, shortened when the anastomosis was fashioned intracorporeally. The grading of most evidence ranged from 'low' to 'high'. Due to the discrepancy in the results of RCTs and non-RCTs, and the proportionally smaller sample size of the former, further randomized trials are required to increase the evidence of this comparison.
    MeSH term(s) Humans ; Laparoscopy/methods ; Colectomy/methods ; Anastomosis, Surgical/methods ; Incisional Hernia ; Pain, Postoperative ; Treatment Outcome
    Language English
    Publishing date 2024-01-12
    Publishing country Italy
    Document type Meta-Analysis ; Journal Article ; Review
    ZDB-ID 2572692-4
    ISSN 2038-3312 ; 2038-131X
    ISSN (online) 2038-3312
    ISSN 2038-131X
    DOI 10.1007/s13304-023-01737-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Comparing Patient Selection and 30‑Day Outcomes Between One Anastomosis and Roux-en-Y Gastric Bypass: a Closer Look.

    Magouliotis, Dimitrios E / Zacharoulis, Dimitris / Tzovaras, George A

    Obesity surgery

    2022  Volume 33, Issue 3, Page(s) 950–951

    MeSH term(s) Humans ; Gastric Bypass ; Obesity, Morbid/surgery ; Patient Selection ; Laparoscopy ; Anastomosis, Roux-en-Y
    Language English
    Publishing date 2022-12-19
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 1070827-3
    ISSN 1708-0428 ; 0960-8923
    ISSN (online) 1708-0428
    ISSN 0960-8923
    DOI 10.1007/s11695-022-06422-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Cecorectal (CRA) versus ileorectal (IRA) anastomosis after colectomy for slow transit constipation (STC): a meta-analysis.

    Perivoliotis, Konstantinos / Baloyiannis, Ioannis / Tzovaras, George

    International journal of colorectal disease

    2022  Volume 37, Issue 3, Page(s) 531–539

    Abstract: Introduction: We conducted this meta-analysis, to compare cecorectal (CRA) and ileorectal anastomosis (IRA), regarding perioperative safety and efficacy, in patients submitted to colectomy for refractory slow transit constipation (STC).: Methods: ... ...

    Abstract Introduction: We conducted this meta-analysis, to compare cecorectal (CRA) and ileorectal anastomosis (IRA), regarding perioperative safety and efficacy, in patients submitted to colectomy for refractory slow transit constipation (STC).
    Methods: This study followed the Cochrane Handbook for Systematic Reviews of Interventions and the PRISMA guidelines. To identify all eligible records, a systematic literature search in the electronic scholar databases (Medline, Scopus, Web of Science) was performed.
    Results: Overall, 5 trials and 291 patients were included in this meta-analysis. Pooled comparisons confirmed the comparability of the two techniques regarding perioperative complications (p = 0.55). CRA was associated with a shorter operation (p = 0.0004) and hospitalization duration (p = 0.001). Although there was no difference in terms of gastrointestinal symptoms, functional outcomes, and patient satisfaction, CRA resulted in lower long-term Wexner scores (p < 0.0001).
    Conclusion: Due to several study limitations, further large-scale RCTs are required to verify the findings of the present meta-analysis.
    MeSH term(s) Anastomosis, Surgical/adverse effects ; Anastomosis, Surgical/methods ; Colectomy/adverse effects ; Colectomy/methods ; Constipation ; Gastrointestinal Transit ; Humans ; Rectum/surgery ; Treatment Outcome
    Language English
    Publishing date 2022-01-12
    Publishing country Germany
    Document type Journal Article ; Meta-Analysis ; Review
    ZDB-ID 84975-3
    ISSN 1432-1262 ; 0179-1958
    ISSN (online) 1432-1262
    ISSN 0179-1958
    DOI 10.1007/s00384-022-04093-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The role of the Rafaelo procedure in the management of hemorrhoidal disease: a systematic review and meta-analysis.

    Christodoulou, Prokopis / Baloyiannis, Ioannis / Perivoliotis, Konstantinos / Symeonidis, Dimitrios / Tzovaras, George

    Techniques in coloproctology

    2022  Volume 27, Issue 2, Page(s) 103–115

    Abstract: Background: The aim of this study was to summarize the current evidence regarding the role of the Rafaelo procedure in the management of hemorrhoidal disease (HD).: Methods: This study was based on the Cochrane Handbook for Systematic Reviews of ... ...

    Abstract Background: The aim of this study was to summarize the current evidence regarding the role of the Rafaelo procedure in the management of hemorrhoidal disease (HD).
    Methods: This study was based on the Cochrane Handbook for Systematic Reviews of Interventions and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A literature search was performed (Medline, Scopus, CENTRAL, and Web of Science) from inception to 25/09/2022. Grey literature databases were also reviewed. The primary endpoint was the pooled complications rate of the Rafaelo procedure in patients with HD. Secondary endpoints included short- (bleeding, pain, thrombosis, necrosis, urinary retention, fever, oedema, anal fissure, and readmission) and long-term (stenosis, meteorism, constipation, anal tags, anal hyposensibility, reoperation, and recurrence) postoperative complication rates. Both prospective and retrospective studies were considered. Quality evaluation was performed via the ROBINS-I tool. Certainty of Evidence was based on the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methodology.
    Results: Overall, 6 non-randomized studies and 327 patients were included. The overall complication rate was 17.6% (95% CI 8.8-26.3%). Short-term complications were bleeding (7.5%, 95% CI 2.5-12.5%), thrombosis (2.2%, 95% CI 0.4-4.8%), and pain (1.6%, 95% CI 0.2-3.3%). Reoperation and recurrence rates were 1.8% (95% CI 0.3-3.4%) and 4.8% (95% CI 1.2-8.4%), respectively. A significant improvement in the presenting symptoms was noted. Method approval and patient satisfaction rates were 89.1% (95% CI 81.7-96.6%) and 95% (95% CI 89.8-100%), correspondingly. Overall CoE was "Very Low".
    Conclusions: Further randomized controlled trials are required to delineate the exact role of the Rafaelo procedure in HD.
    MeSH term(s) Humans ; Hemorrhoids/surgery ; Retrospective Studies ; Prospective Studies ; Neoplasm Recurrence, Local ; Pain
    Language English
    Publishing date 2022-11-13
    Publishing country Italy
    Document type Meta-Analysis ; Systematic Review ; Journal Article ; Review
    ZDB-ID 2083309-X
    ISSN 1128-045X ; 1123-6337
    ISSN (online) 1128-045X
    ISSN 1123-6337
    DOI 10.1007/s10151-022-02730-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: BILE: A Literature Review Based Novel Clinical Classification and Treatment Algorithm of Iatrogenic Bile Duct Injuries.

    Symeonidis, Dimitrios / Tepetes, Konstantinos / Tzovaras, George / Samara, Athina A / Zacharoulis, Dimitrios

    Journal of clinical medicine

    2023  Volume 12, Issue 11

    Abstract: Purposes: The management of patients with iatrogenic bile duct injuries (IBDI) is a challenging field, often with dismal medico legal projections. Attempts to classify IBDI have been made repeatedly and the final results were either analytical and ... ...

    Abstract Purposes: The management of patients with iatrogenic bile duct injuries (IBDI) is a challenging field, often with dismal medico legal projections. Attempts to classify IBDI have been made repeatedly and the final results were either analytical and extensive but not useful in everyday clinical practice systems, or simple and user friendly but with limited clinical correspondence approaches. The purpose of the present review is to propose a novel, clinical classification system of IBDI by reviewing the relevant literature.
    Methods: A systematic literature review was conducted by performing bibliographic searches in the available electronic databases, including PubMed, Scopus, and the Cochrane Library.
    Results: Based on the literature results, we propose a five (5) stage (A, B, C, D and E) classification system for IBDI (BILE Classification). Each stage is correlated with the recommended and most appropriate treatment. Although the proposed classification scheme is clinically oriented, the anatomical correspondence of each IBDI stage has been incorporated as well, using the Strasberg classification.
    Conclusions: BILE classification represents a novel, simple, and dynamic in nature classification system of IBDI. The proposed classification focuses on the clinical consequences of IBDI and provides an action map that can appropriately guide the treatment plan.
    Language English
    Publishing date 2023-05-31
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm12113786
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Efficacy of intraoperative intravenous lidocaine infusion on postoperative opioid consumption after laparoscopic cholecystectomy: a randomized controlled trial.

    Sarakatsianou, Chamaidi / Perivoliotis, Konstantinos / Baloyiannis, Ioannis / Georgopoulou, Stavroula / Tsiaka, Aikaterini / Tzovaras, George

    Langenbeck's archives of surgery

    2023  Volume 408, Issue 1, Page(s) 197

    Abstract: Purpose: We designed this study to evaluate the impact of intraoperative intravenous lidocaine infusion on postoperative opioid consumption after laparoscopic cholecystectomy.: Methods: In total, 98 patients scheduled for elective laparoscopic ... ...

    Abstract Purpose: We designed this study to evaluate the impact of intraoperative intravenous lidocaine infusion on postoperative opioid consumption after laparoscopic cholecystectomy.
    Methods: In total, 98 patients scheduled for elective laparoscopic cholecystectomy were included and randomized. In the experimental group, intravenous lidocaine (bolus 1.5 mg/kg and continuous infusion 2 mg/kg/h) was administered intraoperatively additionally to the standard analgesia, whereas the control group received a matching placebo. Blinding existed at the level of both the patient and the investigator.
    Results: Our study failed to confirm any benefit in opioid consumption, during the postoperative period. Lidocaine resulted to reduced intraoperative systolic, diastolic, and mean arterial pressure. Lidocaine administration did not change postoperative pain scores or the incidence of shoulder pain, at any time endpoint. Moreover, we did not identify any difference in terms of postoperative sedation levels and nausea rates.
    Conclusion: Overall, lidocaine did not have any effect on postoperative analgesia after laparoscopic cholecystectomy.
    MeSH term(s) Humans ; Analgesics, Opioid/therapeutic use ; Anesthetics, Local/therapeutic use ; Cholecystectomy, Laparoscopic/adverse effects ; Cholecystectomy, Laparoscopic/methods ; Double-Blind Method ; Pain, Postoperative/drug therapy ; Pain, Postoperative/prevention & control ; Pain, Postoperative/etiology ; Postoperative Period
    Chemical Substances Analgesics, Opioid ; Anesthetics, Local
    Language English
    Publishing date 2023-05-18
    Publishing country Germany
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 1423681-3
    ISSN 1435-2451 ; 1435-2443
    ISSN (online) 1435-2451
    ISSN 1435-2443
    DOI 10.1007/s00423-023-02937-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Comparison of ointment-based agents after excisional procedures for hemorrhoidal disease: a network meta-analysis of randomized controlled trials.

    Perivoliotis, Konstantinos / Chatzinikolaou, Charito / Symeonidis, Dimitrios / Tepetes, Konstantinos / Baloyiannis, Ioannis / Tzovaras, George

    Langenbeck's archives of surgery

    2023  Volume 408, Issue 1, Page(s) 401

    Abstract: Introduction: Efficient postoperative pain control is important after hemorrhoidal surgery. Although several locally applied medications have been used, current evidence regarding the optimal strategy is still conflicting. This network meta-analysis ... ...

    Abstract Introduction: Efficient postoperative pain control is important after hemorrhoidal surgery. Although several locally applied medications have been used, current evidence regarding the optimal strategy is still conflicting. This network meta-analysis assessed analgesic efficacy and safety of the various topical medications in patients submitted to excisional procedures for hemorrhoids.
    Methods: The present study followed the Cochrane Handbook for Systematic Reviews of Interventions and the PRISMA guidelines. The last systematic literature screening was performed at 15 June 2023. Comparisons were based on a random effects multivariate network meta-analysis under a Bayesian framework.
    Results: Overall, 26 RCTs and 2132 patients were included. Regarding postoperative pain, EMLA cream (surface under the cumulative ranking curve (SUCRA) 80.3%) had the highest ranking at 12-h endpoint, while aloe vera cream (SUCRA 82.36%) scored first at 24 h. Metronidazole ointments had the highest scores at 7 and 14 days postoperatively. Aloe vera had the best analgesic profile (24-h SUCRA 84.8% and 48-h SUCRA 80.6%) during defecation. Lidocaine (SUCRA 87.9%) displayed the best performance regarding overall morbidity rates.
    Conclusions: Due to the inconclusive results and several study limitations, further RCTs are required.
    MeSH term(s) Humans ; Hemorrhoids/surgery ; Ointments/therapeutic use ; Network Meta-Analysis ; Bayes Theorem ; Randomized Controlled Trials as Topic ; Pain, Postoperative ; Analgesics/therapeutic use
    Chemical Substances Ointments ; Analgesics
    Language English
    Publishing date 2023-10-14
    Publishing country Germany
    Document type Meta-Analysis ; Journal Article
    ZDB-ID 1423681-3
    ISSN 1435-2451 ; 1435-2443
    ISSN (online) 1435-2451
    ISSN 1435-2443
    DOI 10.1007/s00423-023-03128-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Unveiling the malabsorptive nature of one anastomosis gastric bypass: a closer look.

    Magouliotis, Dimitrios E / Tzovaras, George

    Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery

    2019  Volume 15, Issue 9, Page(s) 1645

    MeSH term(s) Gastric Bypass ; Humans ; Obesity ; Obesity, Morbid
    Language English
    Publishing date 2019-06-19
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 2274243-8
    ISSN 1878-7533 ; 1550-7289
    ISSN (online) 1878-7533
    ISSN 1550-7289
    DOI 10.1016/j.soard.2019.06.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Comparing the efficacy and safety of laparoscopic and robotic adrenalectomy: a meta-analysis and trial sequential analysis.

    Perivoliotis, Konstantinos / Baloyiannis, Ioannis / Sarakatsianou, Chamaidi / Tzovaras, George

    Langenbeck's archives of surgery

    2020  Volume 405, Issue 2, Page(s) 125–135

    Abstract: Purpose: A systematic literature review and a meta-analysis were designed and conducted, in order to provide an up-to-date comparison of the robotic (RA) and laparoscopic (LA) adrenalectomy in terms of perioperative efficacy and safety.: Methods: The ...

    Abstract Purpose: A systematic literature review and a meta-analysis were designed and conducted, in order to provide an up-to-date comparison of the robotic (RA) and laparoscopic (LA) adrenalectomy in terms of perioperative efficacy and safety.
    Methods: The present meta-analysis was completed in accordance with the guidelines provided by the PRISMA study group and the Cochrane Handbook for Systematic Reviews of Interventions. The electronic scholar databases (Medline, Web of Science, Scopus) were screened. For the reduction of type I errors, a trial sequential analysis (TSA) was performed.
    Results: Overall, 21 studies and 2997 patients were included in this study. RA was associated with a significantly lower open conversion rate (OR: 1.79; 95%CI: 1.10, 2.92) and length of hospitalization (LOS WMD: 0.52; 95%CI: 0.2, 0.84). Marginal results regarding blood loss were recorded (WMD: 2.02; 95%CI: 0.0, 4.03). TSA could not validate the superiority of RA in open conversion rate and blood loss. LA and RA were similar in terms of operative duration (P = 0.18) and positive margin (P = 0.81), complications (P = 0.94) and mortality rate (P = 0.45).
    Conclusions: Even though RA and LA were equivalent regarding perioperative safety, RA was associated with a favorable LOS.
    MeSH term(s) Adrenalectomy ; Humans ; Laparoscopy ; Robotic Surgical Procedures
    Language English
    Publishing date 2020-03-04
    Publishing country Germany
    Document type Comparative Study ; Journal Article ; Meta-Analysis ; Systematic Review
    ZDB-ID 1423681-3
    ISSN 1435-2451 ; 1435-2443
    ISSN (online) 1435-2451
    ISSN 1435-2443
    DOI 10.1007/s00423-020-01860-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Comparison of the transanal surgical techniques for local excision of rectal tumors: a network meta-analysis.

    Perivoliotis, Konstantinos / Baloyiannis, Ioannis / Sarakatsianou, Chamaidi / Tzovaras, George

    International journal of colorectal disease

    2020  Volume 35, Issue 7, Page(s) 1173–1182

    Abstract: Background: In order to assess the various surgical modalities for local resection of rectal tumors, a systematic review of the current literature and a network meta-analysis (NMA) was designed and conducted.: Methods: The present study adhered to ... ...

    Abstract Background: In order to assess the various surgical modalities for local resection of rectal tumors, a systematic review of the current literature and a network meta-analysis (NMA) was designed and conducted.
    Methods: The present study adhered to the PRISMA guidelines and the Cochrane Handbook for Systematic Reviews of Interventions principles. Scholar databases (Medline, Scopus, Web of Science) were systematically screened up to 23/12/2019. A Bayesian NMA, implementing a Markov chain Monte Carlo analysis, was introduced for the probability ranking of the available surgical methods. Odds ratio (OR) and weighted mean difference (WMD) of the categorical and continuous variables, respectively, were reported with the corresponding 95% confidence interval (95%CI).
    Results: Overall, 16 studies and 2146 patients were introduced in our study. Transanal minimal invasive surgery (TAMIS) displayed the highest performance regarding the overall postoperative morbidity, the perioperative blood loss, the length of hospitalization, and the peritoneal violation rate. Transanal endoscopic microsurgery (TEM) was the most efficient modality for resecting an intact specimen. Although transanal local excision (TAE) had the highest ranking considering operative duration, it was associated with a significant risk for positive resection margins and tumor recurrence.
    Conclusions: In conclusion, TEM and TAMIS display superior oncological results over TAE. Due to several limitations, validation of these results requires further RCTs of a higher methodological level.
    MeSH term(s) Bayes Theorem ; Humans ; Neoplasm Recurrence, Local ; Network Meta-Analysis ; Rectal Neoplasms/surgery ; Transanal Endoscopic Microsurgery ; Treatment Outcome
    Language English
    Publishing date 2020-05-24
    Publishing country Germany
    Document type Journal Article ; Meta-Analysis ; Review ; Systematic Review
    ZDB-ID 84975-3
    ISSN 1432-1262 ; 0179-1958
    ISSN (online) 1432-1262
    ISSN 0179-1958
    DOI 10.1007/s00384-020-03634-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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