ROGER SCHMIDT BROCK
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/62 - Laboratório de Fisiopatologia Cirúrgica, Hospital das Clínicas, Faculdade de Medicina
LIM/62 - Laboratório de Fisiopatologia Cirúrgica, Hospital das Clínicas, Faculdade de Medicina
7 resultados
Resultados de Busca
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- The extracisternal approach in vestibular schwannoma surgery and facial nerve preservation(2014) VELLUTINI, Eduardo A. S.; BEER-FURLAN, Andre; BROCK, Roger S.; GOMES, Marcos Q. T.; STAMM, Aldo; CRUZ, Oswaldo Laercio M.The classical surgical technique for the resection of vestibular schwannomas (VS) has emphasized the microsurgical anatomy of cranial nerves. We believe that the focus on preservation of the arachnoid membrane may serve as a safe guide for tumor removal. Method: The extracisternal approach is described in detail. We reviewed charts from 120 patients treated with this technique between 2006 and 2012. Surgical results were evaluated based on the extension of resection, tumor relapse, and facial nerve function. Results: Overall gross total resection was achieved in 81% of the patients. The overall postoperative facial nerve function House-Brackmann grades I-II at one year was 93%. There was no recurrence in 4.2 years mean follow up. Conclusion: The extracisternal technique differs from other surgical descriptions on the treatment of VS by not requiring the identification of the facial nerve, as long as we preserve the arachnoid envelope in the total circumference of the tumor.
- Cervical myelopathy caused by ligamentum flavum ossification(2012) PAIVA, Wellingson Silva; SOARES, Matheus Schimidt; BERNARDO, Luca Silveira; BROCK, Roger Schimidt; TEIXEIRA, Manoel Jacobsen
- Reliability and safety of a new upper cervical spine injury treatment algorithm(2017) JOAQUIM, Andrei Fernandes; BROCK, Roger Schmidt; GUIRADO, Vinicius Monteiro de Paula; SANDON, Luis Henrique; SILVA, Otavio Turolo da; TARICCO, Mario Augusto; TEIXEIRA, Manoel Jacobsen; FIGUEIREDO, Eberval GadelhaIn the present study, we evaluated the reliability and safety of a new upper cervical spine injury treatment algorithm to help in the selection of the best treatment modality for these injuries. Methods: Thirty cases, previously treated according to the new algorithm, were presented to four spine surgeons who were questioned about their personal suggestion for treatment, and the treatment suggested according to the application of the algorithm. After four weeks, the same questions were asked again to evaluate reliability (intra-and inter-observer) using the Kappa index. Results: The reliability of the treatment suggested by applying the algorithm was superior to the reliability of the surgeons' personal suggestion for treatment. When applying the upper cervical spine injury treatment algorithm, an agreement with the treatment actually performed was obtained in more than 89% of the cases. Conclusion: The system is safe and reliable for treating traumatic upper cervical spine injuries. The algorithm can be used to help surgeons in the decision between conservative versus surgical treatment of these injuries.
- Motor corticospinal excitability abnormalities differ between distinct chronic low back pain syndromes(2023) SILVA, Marcelo Luiz da; FERNANDES, Ana Mercia; SILVA, Valquiria A.; GALHARDONI, Ricardo; FELAU, Valter; ARAUJO, Joaci O. de; JR, Jefferson Rosi; BROCK, Roger S.; KUBOTA, Gabriel T.; TEIXEIRA, Manoel J.; YENG, Lin T.; ANDRADE, Daniel Ciampi deObjectives: It is not known whether cortical plastic changes reported in low-back pain (LBP) are present in all etiologies of LBP. Here we report on the assessment of patients with three LBP con-ditions: non-specific-LBP (ns-LBP), failed back surgery syndrome (FBSS), and sciatica (Sc).Methods: Patients underwent a standardized assessment of clinical pain, conditioned pain mod-ulation (CPM), and measures of motor evoked potential (MEPs)-based motor corticospinal excit-ability (CE) by transcranial magnetic stimulation, including short interval intracortical inhibition (SICI), and intracortical facilitation (ICF). Comparisons were also made with normative data from sex-and age-matched healthy volunteers.Results: 60 patients (42 women, 55.1 +/- 9.1 years old) with LBP were included (20 in each group). Pain intensity was higher in patients with neuropathic pain [FBSS (6.8 +/- 1.3), and Sc (6.4 +/- 1.4)] than in those with ns-LBP (4.7 +/- 1.0, P<0.001). The same was shown for pain interference (5.9 +/- 2.0, 5.9 +/- 1.8, 3.2 +/- 1.9, P<0.001), disability (16.4 +/- 3.3, 16.3 +/- 4.3, 10.4 +/- 4.3, P<0.001), and catastrophism (31.1 +/- 12.3, 33.0 +/- 10.4, 17.4 +/- 10.7, P<0.001) scores for FBSS, Sc, and ns-LBP groups, respectively. Patients with neuropathic pain (FBSS, Sc) had lower CPM (-14.8 +/- 1.9,-14.1 +/- 16.7, respectively) compared to ns-LBP (-25.4 +/- 16.6; P<0.02). 80.0% of the FBSS group had defective ICF compared to the other two groups (52.5% for ns-LBP, P=0.025 and 52.5% for Sc, P=0.046). MEPs (140%-rest motor threshold) were low in 50.0% of patients in the FBSS group com-pared to 20.0% of ns-LBP (P=0.018) and 15.0% of Sc (P=0.001) groups. Higher MEPs were corre-lated with mood scores (r=0.489), and with lower neuropathic pain symptom scores(r=-0.415) in FBSS.Conclusions: Different types of LBP were associated with different clinical, CPM and CE profiles, which were not uniquely related to the presence of neuropathic pain. These results highlight the need to further characterize patients with LBP in psychophysics and cortical neurophysiology studies.(c) 2023 The Author(s).
article 19 Citação(ões) na Scopus Continuous ventricular cerebrospinal fluid drainage with intracranial pressure monitoring for management of posttraumatic diffuse brain swelling(2011) ANDRADE, Almir Ferreira de; PAIVA, Wellingson Silva; AMORIM, Robson Luis Oliveira de; FIGUEIREDO, Eberval Gadelha; ALMEIDA, Antonio Nogueira de; BROCK, Roger Schmidt; BOR-SENG-SHU, Edson; TEIXEIRA, Manoel JacobsenBackground: Ventricular drainage has played an important role in the management of traumatic brain-injured patients. The aim of the present study was describe outcomes in a series of 57 patients with diffuse brain swelling underwent to intracranial pressure (ICP) monitoring. Method: Fifty-eight patients with diffuse posttraumatic brain swelling, were evaluated prospectively. The Glasgow Coma Scale (GCS) scores of patients varied from 4 to 12. Patients groups divided according to GCS and age. Patient neurological assessment was classified as favorable, unfavorable, and death. Results: Mechanisms of injury were vehicle accidents in 72.4% and falls in 15.6%. 54% of patients had GCS scores between 6 and 8. There were no statistical differences, regarding outcome, between groups separated by age. In the adults group (n=47), 44.7% evolved favorably. Conclusion: Our results indicate a poor prognosis in patients with brain swelling. We believe that continuous ventricular CSF drainage with ICP monitoring is a simple method as an adjunct in the management of these patients.- Minor blunt cervical spine trauma associated with esophageal perforation and epidural empyema(2016) BEER-FURLAN, Andre; BROCK, Roger S.; MENDES, Lucas S.; MUTARELLI, Eduardo G.
- Survival score scales of patients operated with spinal metastases: retrospective application in a Brazilian population(2016) RIBAS, Eduardo Carvalhal; MATHIAS JUNIOR, Luis Roberto; GUIRADO, Vinicius Monteiro; BROCK, Roger Schmidt; TARICCO, Mario Augusto; DANIEL, Mauro Miguel; LOURENCO, Rafael Burgomeister; TEIXEIRA, Manoel JacobsenSpinal cord epidural metastasis (SEM) is a common complication of systemic cancer. Predicting these patient's survival is a key factor to select the proper treatment modality, but the three most used score scales to predict their survival (Tokuhashi revised score, Tomita score and Bauer modified score) were designed in single institutions and their reliability to predict correctly the patient's survival were first tested only in those specific populations. This prognostication issue is addressed in this article, evaluating retrospectively the survival of 17 patients with SEM from a Brazilian general hospital with these score scales. Our results show that the actual survival of those patients were worse than the predicted of all three score scales, suggesting that differences between the different populations might have affected their reliability and alert that their usage as a major factor to select the most appropriate treatment have to be done with caution.