ANTONIO CARLOS SAMAIA DA SILVA COELHO
Projetos de Pesquisa
Unidades Organizacionais
3 resultados
Resultados de Busca
Agora exibindo 1 - 3 de 3
- Neutrophil-to-lymphocyte and platelet-to-lymphocyte ratios and prognosis after aneurysmal subarachnoid hemorrhage: a cohort study(2023) OLIVEIRA, Adilson Jose Manuel de; RABELO, Nicollas Nunes; TELLES, Joao Paulo Mota; SOLLA, Davi Jorge Fontoura; COELHO, Antonio Carlos Samaia da Silva; BARBOSA, Guilherme Bitencourt; BARBATO, Natalia Camargo; YOSHIKAWA, Marcia Harumy; TEIXEIRA, Manoel Jacobsen; FIGUEIREDO, Eberval GadelhaBackground Subarachnoid hemorrhage (SAH) prognosis remains poor. Vasospasm mechanism might be associated with inflammation. Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) have been studied as inflammation markers and prognostic predictors.Objective We aimed to investigate NLR and PLR in admission as predictors of angiographic vasospasm and functional outcome at 6 months.Methods This cohort study included consecutive aneurysmal SAH patients admitted to a tertiary center. Complete blood count was recorded at admission before treatment. White blood cell count, neutrophil count, lymphocyte count, platelet count, NLR, and PLR were collected as independent variables. Vasospasm occurrence-modified Rankin scale (mRS), Glasgow outcome scale (GOS), and Hunt-Hess score at admission and at 6 months were recorded as dependent variables. Multivariable logistic regression models were used to adjust for potential confounding and to assess the independent prognostic value of NLR and PLR at admission.Results A total of 74.1% of the patients were female, with mean age of 55.6 & PLUSMN; 12.4 years. At admission, the median Hunt-Hess score was 2 (interquartile range [IQR] 1), and the median mFisher was 3 (IQR 1). Microsurgical clipping was the treatment for 66.2% of the patients. Angiographic vasospasm incidence was 16.5%. At 6 months, the median GOS was 4 (IQR 0.75), and the median mRS was 3 (IQR 1.5). Twenty-one patients (15.1%) died. Neutrophil-to-lymphocyte ratio and PLR levels did not differ between favorable and unfavorable (mRS > 2 or GOS < 4) functional outcomes. No variables were significantly associated with angiographic vasospasm.Conclusion Admission NLR and PLR presented no value for prediction of functional outcome or angiographic vasospasm risk. Further research is needed in this field.
- Global Outcomes for Microsurgical Clipping of Unruptured Intracranial Aneurysms: A Benchmark Analysis of 2245 Cases(2024) DREXLER, Richard; SAUVIGNY, Thomas; PANTEL, Tobias F.; RICKLEFS, Franz L.; CATAPANO, Joshua S.; WANEBO, John E.; LAWTON, Michael T.; SANCHIN, Aminaa; HECHT, Nils; VAJKOCZY, Peter; RAYGOR, Kunal; TONETTI, Daniel; ABLA, Adib; NAAMANI, Kareem El; TJOUMAKARIS, Stavropoula I.; JABBOUR, Pascal; JANKOWITZ, Brian T.; SALEM, Mohamed M.; BURKHARDT, Jan-Karl; WAGNER, Arthur; WOSTRACK, Maria; GEMPT, Jens; MEYER, Bernhard; GAUB, Michael; MASCITELLI, Justin R.; DODIER, Philippe; BAVINZSKI, Gerhard; ROESSLER, Karl; STROH, Nico; GMEINER, Matthias; GRUBER, Andreas; FIGUEIREDO, Eberval G.; COELHO, Antonio Carlos Samaia da Silva; BERVITSKIY, Anatoliy V.; ANISIMOV, Egor D.; RZAEV, Jamil A.; KRENZLIN, Harald; KERIC, Naureen; RINGEL, Florian; PARK, Dougho; KIM, Mun-Chul; MARCATI, Eleonora; CENZATO, Marco; WESTPHAL, Manfred; DUEHRSEN, LasseBACKGROUND AND OBJECTIVES: Benchmarks represent the best possible outcome and help to improve outcomes for surgical procedures. However, global thresholds mirroring an optimal and reachable outcome for microsurgical clipping of unruptured intracranial aneurysms (UIA) are not available. This study aimed to define standardized outcome benchmarks in patients who underwent clipping of UIA. METHODS: A total of 2245 microsurgically treated UIA from 15 centers were analyzed. Patients were categorized into low- (""benchmark"") and high-risk (""nonbenchmark"") patients based on known factors affecting outcome. The benchmark was defined as the 75th percentile of all centers' median scores for a given outcome. Benchmark outcomes included intraoperative (eg, duration of surgery, blood transfusion), postoperative (eg, reoperation, neurological status), and aneurysm-related factors (eg, aneurysm occlusion). Benchmark cutoffs for aneurysms of the anterior communicating/anterior cerebral artery, middle cerebral artery, and posterior communicating artery were determined separately. RESULTS: Of the 2245 cases, 852 (37.9%) patients formed the benchmark cohort. Most operations were performed for middle cerebral artery aneurysms (53.6%), followed by anterior communicating and anterior cerebral artery aneurysms (25.2%). Based on the results of the benchmark cohort, the following benchmark cutoffs were established: favorable neurological outcome (modified Rankin scale <= 2) >= 95.9%, postoperative complication rate <= 20.7%, length of postoperative stay <= 7.7 days, asymptomatic stroke <= 3.6%, surgical site infection <= 2.7%, cerebral vasospasm <= 2.5%, new motor deficit <= 5.9%, aneurysm closure rate >= 97.1%, and at 1-year follow-up: aneurysm closure rate >= 98.0%. At 24 months, benchmark patients had a better score on the modified Rankin scale than nonbenchmark patients. CONCLUSION: This study presents internationally applicable benchmarks for clinically relevant outcomes after microsurgical clipping of UIA. These benchmark cutoffs can serve as reference values for other centers, patient registries, and for comparing the benefit of other interventions or novel surgical techniques.
- Temporary arterial occlusion (TAO) as independent prognostic factor in unruptured aneurysm surgery: A cohort study(2022) YOSHIKAWA, Marcia Harumy; RABELO, Nicollas Nunes; TELLES, Joao Paulo M.; PIPEK, Leonardo Zumerkorn; BARBOSA, Guilherme Bitencourt; BARBATO, Natalia Camargo; COELHO, Antonio Carlos Samaia da Silva; TEIXEIRA, Manoel Jacobsen; FIGUEIREDO, Eberval GadelhaBackground: Temporary arterial occlusion (TAO) is a technique widely used in cerebrovascular surgery. However, few studies have evaluated the independent long-term effects of TAO or given detailed information about the complications during in-hospital stay.& nbsp;Objective: This study aims to investigate the independent impact of TAO during unruptured intracranial aneurysm surgery on short and long-term outcomes.& nbsp;Methods: The study included surgical elective patients diagnosed with unruptured aneurysm and indication of microsurgical treatment. Outcome assessment included occurrence of intra-operative (IOC) and post-operative (POC) complications, as well as Glasgow Outcome Scale (GOS) score 6 months after discharge.& nbsp;Results: 114 patients were included and 36 were followed. TAO was associated with POC (OR = 2.08; CI 95% 1.12-3.96; p = 0.01). The group with TAO and intraoperative rupture (IOR) did not differ from the group with TAO without IOR in terms of POC (p = 0.65) and IOC (p = 0.78). IOR (p = 0.16) and number of occlusions (p = 0.23) did not change GOS, but the total time of occlusion was associated with neurologic worsening (p = 0.034) during follow-up. The TAO group had larger aneurysm size and higher frequency of irregular lesions, when compared to the entire study group. Aneurysm location was not associated with POC (p = 0.25), IOC (0.17) or GOS (p = 0.75).& nbsp;Conclusion: The location of temporary clip placement and the number of clips did not influence the short-and long-term outcomes of patients with unruptured intracranial aneurysms. However, presence of temporary clips was associated with POC regardless of IOR occurrence and increased total time of occlusion was associated with poor outcomes after 6 months.