IGOR BRAGA RIBEIRO
Projetos de Pesquisa
Unidades Organizacionais
LIM/35 - Laboratório de Nutrição e Cirurgia Metabólica do Aparelho Digestivo, Hospital das Clínicas, Faculdade de Medicina
8 resultados
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- Propofolvsmidazolam sedation for elective endoscopy in patients with cirrhosis: A systematic review and meta-analysis of randomized controlled trials(2020) GUACHO, John Alexander Lata; MOURA, Diogo Turiani Hourneaux de; RIBEIRO, Igor Braga; PONTE NETO, Alberto Machado da; SINGH, Shailendra; TUCCI, Marina Gammaro Baldavira; BERNARDO, Wanderley Marques; MOURA, Eduardo Guimaraes Hourneaux deBACKGROUND Patients with cirrhosis frequently require sedation for elective endoscopic procedures. Several sedation protocols are available, but choosing an appropriate sedative in patients with cirrhosis is challenging. AIM To conduct a systematic review and meta-analysis to compare propofol and midazolam for sedation in patients with cirrhosis during elective endoscopic procedures in an attempt to understand the best approach. METHODS This systematic review and meta-analysis was conducted using the PRISMA guidelines. Electronic searches were performed using MEDLINE, EMBASE, Central Cochrane, LILACS databases. Only randomized control trials (RCTs) were included. The outcomes studied were procedure time, recovery time, discharge time, and adverse events (bradycardia, hypotension, and hypoxemia). The risk of bias assessment was performed using the Revised Cochrane Risk-of-Bias tool for randomized trials (RoB-2). Quality of evidence was evaluated by GRADEpro. The meta-analysis was performed using Review Manager. RESULTS The search yielded 3,576 records. Out of these, 8 RCTs with a total of 596 patients (302 in the propofol group and 294 in the midazolam group) were included for the final analysis. Procedure time was similar between midazolam and propofol groups (MD: 0.25, 95%CI: -0.64 to 1.13,P= 0.59). Recovery time (MD: -8.19, 95%CI: -10.59 to -5.79,P< 0.00001). and discharge time were significantly less in the propofol group (MD: -12.98, 95%CI: -18.46 to -7.50,P< 0.00001). Adverse events were similar in both groups (RD: 0.02, 95%CI: 0-0.04,P= 0.58). Moreover, no significant difference was found for bradycardia (RD: 0.03, 95%CI: -0.01 to 0.07,P= 0.16), hypotension (RD: 0.03, 95%CI: -0.01 to 0.07,P= 0.17), and hypoxemia (RD: 0.00, 95%CI: -0.04 to 0.04,P= 0.93). Five studies had low risk of bias, two demonstrated some concerns, and one presented high risk. The quality of the evidence was very low for procedure time, recovery time, and adverse events; while low for discharge time. CONCLUSION This systematic review and meta-analysis based on RCTs show that propofol has shorter recovery and patient discharge time as compared to midazolam with a similar rate of adverse events. These results suggest that propofol should be the preferred agent for sedation in patients with cirrhosis.
- Sodium picosulphate or polyethylene glycol before elective colonoscopy in outpatients? A systematic review and meta-analysis(2018) ROCHA, Rodrigo Silva de Paula; RIBEIRO, Igor Braga; MOURA, Diogo Turiani Hourneaux de; BERNARDO, Wanderley Marques; MINATA, Mauricio Kazuyoshi; MORITA, Flavio Hiroshi Ananias; AQUINO, Julio Cesar Martins; BABA, Elisa Ryoka; MIYAJIMA, Nelson Tomio; MOURA, Eduardo Guimaraes Hourneaux deAIM To determine the best option for bowel preparation [sodium picosulphate or polyethylene glycol (PEG)] for elective colonoscopy in adult outpatients. METHODS A systematic review of the literature following the PRISMA guidelines was performed using Medline, Scopus, EMBASE, Central, Cinahl and Lilacs. No restrictions were placed for country, year of publication or language. The last search in the literature was performed on November 20th, 2017. Only randomized clinical trials with full texts published were included. The subjects included were adult outpatients who underwent bowel cleansing for elective colonoscopy. The included studies compared sodium picosulphate with magnesium citrate (SPMC) and PEG for bowel preparation. Exclusion criteria were the inclusion of inpatients or groups with specific conditions, failure to mention patient status (outpatient or inpatient) or dietary restrictions, and permission to have unrestricted diet on the day prior to the exam. Primary outcomes were bowel cleaning success and/or tolerability of colon preparation. Secondary outcomes were adverse events, polyp and adenoma detection rates. Data on intention-totreat were extracted by two independent authors and risk of bias assessed through the Jadad scale. Funnel plots, Egger's test, Higgins' test (I2) and sensitivity analyses were used to assess reporting bias and heterogeneity. The meta-analysis was performed by computing risk difference (RD) using Mantel-Haenszel (MH) method with fixed-effects (FE) and random-effects (RE) models. Review Manager 5 (RevMan 5) version 6.1 (The Cochrane Collaboration) was the software chosen to perform the meta-analysis. RESULTS 662 records were identified but only 16 trials with 6200 subjects were included for the meta-analysis. High heterogeneity among studies was found and sensitivity analysis was needed and performed to interpret data. In the pooled analysis, SPMC was better for bowel cleaning [MH FE, RD 0.03, IC (0.01, 0.05), P = 0.003, I-2 = 33%, NNT 34], for tolerability [MH RE, RD 0.08, IC (0.03, 0.13), P = 0.002, I-2 = 88%, NNT 13] and for adverse events [MH RE, RD 0.13, IC (0.05, 0.22), P = 0.002, I-2 = 88%, NNT 7]. There was no difference in regard to polyp and adenoma detection rates. Additional analyses were made by subgroups (type of regimen, volume of PEG solution and dietary recommendations). SPMC demonstrated better tolerability levels when compared to PEG in the following subgroups: ""day-before preparation"" [MH FE, RD 0.17, IC (0.13, 0.21), P < 0.0001, I-2 = 0%, NNT 6], "" preparation in accordance with time interval for colonoscopy"" [MH RE, RD 0.08, IC (0.01, 0.15), P = 0.02, I-2 = 54%, NNT 13], when compared to ""high-volume PEG solutions"" [MH RE, RD 0.08, IC (0.01, 0.14), I-2 = 89%, P = 0.02, NNT 13] and in the subgroup "" liquid diet on day before"" [MH RE, RD 0.14, IC (0.06,0.22), P = 0.0006, I-2 = 81%, NNT 8]. SPMC was also found to cause fewer adverse events than PEG in the "" high-volume PEG solutions"" [MH RE, RD -0.18, IC (-0.30, -0.07), P = 0.002, I-2 = 79%, NNT 6] and PEG in the "" low-residue diet"" subgroup [MH RE, RD -0.17, IC (-0.27, 0.07), P = 0.0008, I-2 = 86%, NNT 6]. CONCLUSION SPMC seems to be better than PEG for bowel preparation, with a similar bowel cleaning success rate, better tolerability and lower prevalence of adverse events.
Mucosa-associated lymphoid tissue lymphoma in the terminal ileum: A case report
(2022) FIGUEIREDO, Vitor Lauar Pimenta de; RIBEIRO, Igor Braga; MOURA, Diogo Turiani Hourneaux de; OLIVEIRA, Cristiano Claudino; MOURA, Eduardo Guimaraes Hourneaux deBACKGROUND & nbsp;The lymphoma of the mucosa-associated lymphoid tissue (MALT) is predominantly found in the stomach. The few cases reported in the literature of MALT lymphomas affecting the ileum are in patients who are already symptomatic and with clear advanced endoscopic findings. We present the first case of an asymptomatic female patient who underwent colonoscopy as a routine examination with the findings of an ulcer in the distal ileum region, which histopathological examination and associated immunohistochemistry revealed the diagnosis of MALT lymphoma.& nbsp;CASE SUMMARY & nbsp;A 57-year-old asymptomatic female patient underwent a colonoscopy exam for screening. The examination revealed an ulcer of medium depth with well-defined borders covered by a thin layer of fibrin and a halo of hyperemia in the distal ileum portion. Findings are nonspecific but may signal infections by viruses, protozoa, and parasites or inflammatory diseases such as Crohn's disease. Biopsies of the ulcer were taken. The anatomopathological result revealed an atypical diffuse lymphocytic infiltrate of small cells with a characteristic cytoplasmic halo of marginal zone cells. The immunohistochemical study was performed and the results demonstrated a negative neoplastic infiltrate for the expression of cyclin D1 and cytokeratin AE1/AE3 and a positive for BCL60 in the germinal center. The test also revealed CD10 positivity in the glandular epithelium and germinal center of a reactive follicle with dual-labeling of CD20 and CD3 demonstrating the B lymphocyte nature of the neoplastic infiltrate. In BCL2 protein labeling, the neoplastic infiltrate is strongly positive with a negative germinal center. The findings are consistent with immunophenotype B non-Hodgkin's lymphoma, better classified as extranodal MALT. The patient was treated with chemotherapy and showed complete regression of the disease, as evidenced by colonoscopy performed after treatment.& nbsp;CONCLUSION & nbsp;MALT lymphomas in the terminal ileum are extremely rare and only 4 cases have been reported in the literature. Given the low sensitivity and specificity of endoscopic images in these cases, the pathology can be confused with other important differential diagnoses such as inflammatory diseases or infectious diseases and which makes the biopsy important, even in asymptomatic patients, paired with anatomopathological analysis and immunohistochemistry which is the gold standard for correct diagnosis.- Role of endoscopic vacuum therapy in the management of gastrointestinal transmural defects(2019) MOURA, Diogo Turiani Hourneaux de; MOURA, Bruna Furia Buzetti Hourneaux de; MANFREDI, Michael A.; HATHORN, Kelly E.; BAZARBASHI, Ahmad N.; RIBEIRO, Igor Braga; MOURA, Eduardo Guimaraes Hourneaux de; THOMPSON, Christopher C.A gastrointestinal (GI) transmural defect is defined as total rupture of the GI wall, and these defects can be divided into three categories: perforations, leaks, and fistulas. Surgical management of these defects is usually challenging and may be associated with high morbidity and mortality rates. Recently, several novel endoscopic techniques have been developed, and endoscopy has become a first-line approach for therapy of these conditions. The use of endoscopic vacuum therapy (EVT) is increasing with favorable results. This technique involves endoscopic placement of a sponge connected to a nasogastric tube into the defect cavity or lumen. This promotes healing via five mechanisms, including macrodeformation, microdeformation, changes in perfusion, exudate control, and bacterial clearance, which is similar to the mechanisms in which skin wounds are treated with commonly employed wound vacuums. EVT can be used in the upper GI tract, small bowel, biliopancreatic regions, and lower GI tract, with variable success rates and a satisfactory safety profile. In this article, we review and discuss the mechanism of action, materials, techniques, efficacy, and safety of EVT in the management of patients with GI transmural defects.
- Propofol vs traditional sedatives for sedation in endoscopy: A systematic review and meta-analysis(2019) DELGADO, Aureo Augusto de Almeida; MOURA, Diogo Turiani Hourneaux de; RIBEIRO, Igor Braga; BAZARBASHI, Ahmad Najdat; SANTOS, Marcos Eduardo Lera dos; BERNARDO, Wanderley Marques; MOURA, Eduardo Guimaraes Hourneaux deBACKGROUND Propofol is commonly used for sedation during endoscopic procedures. Data suggests its superiority to traditional sedatives used in endoscopy including benzodiazepines and opioids with more rapid onset of action and improved post-procedure recovery times for patients. However, Propofol requires administration by trained healthcare providers, has a narrow therapeutic index, lacks an antidote and increases risks of cardio-pulmonary complications. AIM To compare, through a systematic review of the literature and meta-analysis, sedation with propofol to traditional sedatives with or without propofol during endoscopic procedures. METHODS A literature search was performed using MEDLINE, Scopus, EMBASE, the Cochrane Library, Scopus, LILACS, BVS, Cochrane Central Register of Controlled Trials, and The Cumulative Index to Nursing and Allied Health Literature databases. The last search in the literature was performed on March, 2019 with no restriction regarding the idiom or the year of publication. Only randomized clinical trials with full texts published were included. We divided sedation therapies to the following groups: (1) Propofol versus benzodiazepines and/or opiate sedatives; (2) Propofol versus Propofol with benzodiazepine and/or opioids; and (3) Propofol with adjunctive benzodiazepine and opioid versus benzodiazepine and opioid. The following outcomes were addressed: Adverse events, patient satisfaction with type of sedation, endoscopists satisfaction with sedation administered, dose of propofol administered and time to recovery post procedure. Meta-analysis was performed using RevMan5 software version 5.39. RESULTS A total of 23 clinical trials were included (n = 3854) from the initial search of 6410 articles. For Group I (Propofol vs benzodiazepine and/or opioids): The incidence of bradycardia was not statistically different between both sedation arms (RD: -0.01, 95%CI: -0.03-+0.01, I-2: 22%). In 10 studies, the incidence of hypotension was not statistically difference between sedation arms (RD: 0.01, 95%CI: -0.02-+0.04, I-2: 0%). Oxygen desaturation was higher in the propofol group but not statistically different between groups (RD: -0.03, 95%CI: -0.06-+0.00, I-2: 25%). Patients were more satisfied with their sedation in the benzodiazepine + opioid group compared to those with monotherapy propofol sedation (MD: +0.89, 95%CI: +0.62-+1.17, I-2: 39%). The recovery time after the procedure showed high heterogeneity even after outlier withdrawal, there was no statistical difference between both arms (MD: -15.15, 95%CI: -31.85-+1.56, I-2: 99%). For Group II (Propofol vs propofol with benzodiazepine and/or opioids): Bradycardia had a tendency to occur in the Propofol group with benzodiazepine and/or opioid-associated (RD: -0.08, 95%CI: -0.13--0.02, I-2: 59%). There was no statistical difference in the incidence of bradycardia (RD: -0.00, 95%CI: -0.08-+0.08, I-2: 85%), desaturation (RD: -0.00, 95%CI: -0.03-+0.02, I-2: 44%) or recovery time (MD: -2.04, 95%CI: -6.96-+2.88, I-2: 97%) between sedation arms. The total dose of propofol was higher in the propofol group with benzodiazepine and/or opiates but with high heterogeneity. (MD: 70.36, 95%CI: +53.11-+87.60, I-2: 61%). For Group III (Propofol with benzodiazepine and opioid vs benzodiazepine and opioid): Bradycardia and hypotension was not statistically significant between groups (RD: -0.00, 95%CI: -0.002-+0.02, I-2: 3%; RD: 0.04, 95%CI: -0.05-+0.13, I-2: 77%). Desaturation was evaluated in two articles and was higher in the propofol + benzodiazepine + opioid group, but with high heterogeneity (RD: 0.15, 95%CI: 0.08-+0.22, I-2: 95%). CONCLUSION This meta-analysis suggests that the use of propofol alone or in combination with traditional adjunctive sedatives is safe and does not result in an increase in negative outcomes in patients undergoing endoscopic procedures.
- Acute abdominal obstruction: Colon stent or emergency surgery? An evidence-based review(2019) RIBEIRO, Igor Braga; MOURA, Diogo Turiani Hourneaux de; THOMPSON, Christopher C.; MOURA, Eduardo Guimaraes Hourneaux deAccording to the American Cancer Society and Colorectal Cancer Statistics 2017, colorectal cancer (CRC) is one of the most common malignancies in the United States and the second leading cause of cancer death in the world in 2018. Previous studies demonstrated that 8%-29% of patients with primary CRC present malignant colonic obstruction (MCO). In the past, emergency surgery has been the primary treatment for MCO, although morbidity and surgical mortality rates are higher in these settings than in elective procedures. In the 1990s, self-expanding metal stents appeared and was a watershed in the treatment of patients in gastrointestinal surgical emergencies. The studies led to high expectations because the use of stents could prevent surgical intervention, such as colostomy, leading to lower morbidity and mortality, possibly resulting in higher quality of life. This review was designed to provide present evidence of the indication, technique, outcomes, benefits, and risks of these treatments in acute MCO through the analysis of previously published studies and current guidelines.
- Gallbladder perforation due to endoscopic sleeve gastroplasty: A case report and review of literature(2020) NETO, Joao de Siqueira; MOURA, Diogo Turiani Hourneaux de; RIBEIRO, Igor Braga; BARRICHELLO, Sergio Alexandre; HARTHORN, Kelly E.; THOMPSON, Christopher C.BACKGROUND The healthcare impact of obesity is enormous, and there have been calls for new approaches to containing the epidemic worldwide. Minimally invasive procedures have become more popular, with one of the most widely used being endoscopic sleeve gastroplasty (ESG). Although major adverse events after ESG are rare, some can cause considerable mortality. To our knowledge, there has been no previous report of biliary ascites after ESG. CASE SUMMARY A 48-year-old female with obesity refractory to lifestyle changes and prior gastric balloon placement underwent uncomplicated ESG and was discharged on the following day. On postoperative day 3, she developed abdominal pain, which led to an emergency department visit the following day. She was readmitted to the hospital, with poor general health status and signs of peritoneal irritation. Computed tomography imaging showed fluid in the abdominal cavity. Laparoscopy revealed biliary ascites and showed that the gallbladder was sutured to the gastric wall. The patient underwent cholecystectomy and lavage of the abdominal cavity and was admitted to the intensive care unit post-operatively. After 7 d of antibiotic therapy and 20 d of hospitalization, she was discharged. Fortunately, 6 mo later, she presented in excellent general condition and with a 20.2% weight loss. CONCLUSION ESG is a safe procedure. However, adverse events can still occur, and precautions should be taken by the endoscopist. In general, patient position, depth of tissue acquisition, location of stitch placement, and endoscopist experience are all important factors to consider to mitigate procedural risk.
- Video capsule endoscopy vs double-balloon enteroscopy in the diagnosis of small bowel bleeding: A systematic review and meta-analysis(2018) BRITO, Helcio Pedrosa; RIBEIRO, Igor Braga; MOURA, Diogo Turiani Hourneaux de; BERNARDO, Wanderley Marques; CHAVES, Dalton Marques; KUGA, Rogerio; MAAHS, Ethan Dwane; ISHIDA, Robson Kiyoshi; MOURA, Eduardo Turiani Hourneaux de; MOURA, Eduardo Guimaraes Hourneaux deAIM To compare the diagnostic accuracy of video capsule endoscopy (VCE) and double-balloon enteroscopy (DBE) in cases of obscure gastrointestinal bleeding (OGIB) of vascular origin. METHODS MEDLINE (via PubMed), LILACS (via BVS) and Cochrane/CENTRAL virtual databases were searched for studies dated before 2017. We identified prospective and retrospective studies, including observational, cohort, single-blinded and multicenter studies, comparing VCE and DBE for the diagnosis of OGIB, and data of all the vascular sources of bleeding were collected. All patients were subjected to the same gold standard method. Relevant data were then extracted from each included study using a standardized extraction form. We calculated study variables (sensitivity, specificity, prevalence, positive and negative predictive values and accuracy) and performed a meta-analysis using Meta-Disc software. RESULTS In the per-patient analysis, 17 studies (1477 lesions) were included. We identified 3150 exams (1722 VCE and 1428 DBE) in 2043 patients and identified 2248 sources of bleeding, 1467 of which were from vascular lesions. Of these lesions, 864 (58.5%) were diagnosed by VCE, and 613 (41.5%) were diagnosed by DBE. The pretest probability for bleeding of vascular origin was 54.34%. The sensitivity of DBE was 84% (95% CI: 0.82-0.86; heterogeneity: 78.00%), and the specificity was 92% (95% CI: 0.89-0.94; heterogeneity: 92.0%). For DBE, the positive likelihood ratio was 11.29 (95% CI: 4.83-26.40; heterogeneity: 91.6%), and the negative likelihood ratio was 0.20 (95% CI: 0.15-0.27; heterogeneity: 67.3%). Performing DBE after CE increased the diagnostic yield of vascular lesion by 7%, from 83% to 90%. CONCLUSION The diagnostic accuracy of detecting small bowel bleeding from a vascular source is increased with the use of an isolated video capsule endoscope compared with isolated DBE. However, concomitant use increases the detection rate of the bleeding source.