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Dive into the research topics where Roger Schmidt Brock is active.

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Featured researches published by Roger Schmidt Brock.


BMC Emergency Medicine | 2011

Complete motor recovery after acute paraparesis caused by spontaneous spinal epidural hematoma: case report

Leandro U Taniguchi; Felix Hendrik Pahl; José Ed Lúcio; Roger Schmidt Brock; Marcos Q. T. Gomes; Tarso Adoni; Victor Cc Fiorini; Rodrigo do Carmo Carvalho; Eli Faria Evaristo; Eduardo Genaro Mutarelli; Guilherme Pp Schettino

BackgroundSpontaneous spinal epidural hematoma is a relatively rare but potentially disabling disease. Prompt timely surgical management may promote recovery even in severe cases.Case presentationWe report a 34-year-old man with a 2-hour history of sudden severe back pain, followed by weakness and numbness over the bilateral lower limbs, progressing to intense paraparesis and anesthesia. A spinal magnetic resonance imaging scan was performed and revealed an anterior epidural hematoma of the thoracic spine. He underwent an emergency decompression laminectomy of the thoracic spine and hematoma evacuation. Just after surgery, his lower extremity movements improved. After 1 week, there was no residual weakness and ambulation without assistance was resumed, with residual paresthesia on the plantar face of both feet. After 5 months, no residual symptoms persisted.ConclusionsThe diagnosis of spontaneous spinal epidural hematoma must be kept in mind in cases of sudden back pain with symptoms of spinal cord compression. Early recognition, accurate diagnosis and prompt surgical treatment may result in significant improvement even in severe cases.


Arquivos De Neuro-psiquiatria | 2011

Continuous ventricular cerebrospinal fluid drainage with intracranial pressure monitoring for management of posttraumatic diffuse brain swelling

Almir Ferreira de Andrade; Wellingson Silva Paiva; Robson Luis Amorim; Eberval Gadelha Figueiredo; Antonio Nogueira de Almeida; Roger Schmidt Brock; Edson Bor-Seng-Shu; Manoel Jacobsen Teixeira

BACKGROUND 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.


Journal of Neurosurgery | 2014

Perianeurysmal edema as a predictive sign of aneurysmal rupture

Felix Hendrik Pahl; Matheus Fernandes de Oliveira; Nelson Paes Fortes Diniz Ferreira; Leonardo Lopes de Macedo; Roger Schmidt Brock; Valéria Cardoso de Souza

Subarachnoid hemorrhage following intracranial aneurysmal rupture is a major cause of morbidity and mortality. Several factors may affect the probability of rupture, such as tobacco and alcohol use; size, shape, and location of the aneurysm; presence of intraluminal thrombus; and even the sex of the patient. However, few data correlate such findings with the timing of aneurysmal rupture. The authors report 2 cases of middle-age women with headache and MRI findings of incidental aneurysms. Magnetic resonance imaging showed evidence of surrounding parenchymal edema, and in one case there was a clear increase in edema during follow-up, suggesting a progressive inflammatory process that culminated with rupture. These findings raise the possibility that bleb formation and an enlargement of a cerebral aneurysm might be associated with an inflammatory reaction of the aneurysm wall resulting in perianeurysmal edema and subsequent aneurysmal rupture. There may be a temporal link between higher degree of edema and higher risk for rupture, including risk for immediate rupture.


Jornal Brasileiro De Pneumologia | 2011

Marca-passo diafragmático: indicação incomum, aplicação bem-sucedida

Rodrigo Afonso da Silva Sardenberg; Liliana Bahia Pereira Secaf; Adriana Cordeiro Pinotti; Mario Augusto Taricco; Roger Schmidt Brock; Riad Naim Younes

Sinais de radiofrequencia, gerados por um transmissor a bateria (Figura 1a), foram enviados por uma antena externa (Figura 1a), fixada aos receptores implantados (Figura 1b), que convertem os sinais de radio em impulsos eletricos, causando contracao diafragmatica. A fim de evitar fadiga, o MPD foi acionado a 15 Hz de frequencia durante 15 min de cada hora em que o paciente estivesse acordado na primeira semana, com aumentos de 15 min/semana, conforme a tolerância do paciente. Apos 30 dias de uso do MPD, o paciente recebeu alta em boas condicoes clinicas e foi submetido a 60 min diarios de uso continuo do MPD. Ate o momento em que este texto foi redigido, apos 90 dias de uso do MPD, o paciente fora submetido a estimulo continuo durante aproximadamente 10 h todos os dias, necessitando de ventilacao mecânica especialmente enquanto dormia. Nao houvera relatos de fadiga muscular. A qualidade da fala melhorara, e o estoma traqueal fora mantido por meio de uma cânula de 6,0 mm de diâmetro. Em 1972, Glenn


Acta Neurologica Belgica | 2016

Minor blunt cervical spine trauma associated with esophageal perforation and epidural empyema.

André Beer-Furlan; Roger Schmidt Brock; Lucas S. Mendes; Eduardo Genaro Mutarelli

Esophageal perforation in the setting of minor blunt trauma is rare, and diagnosis can be difficult due to atypical signs and symptoms.The mechanism of esophageal injury associated with blunt cervical spine trauma is the traction and hyperextension of the neck. Cervical spine fracture and anterolisthesis may also contribute to the mechanism of esophageal perforation. The previous reports have demonstrated its association with high-energy trauma and severe spinal injury [1–3]. Current management of esophageal perforation focuses on early diagnosis and aggressive treatment that may include surgical drainage, attempt of primary repair, and abscess drainage when indicated [1, 2]. Case report


Case Reports in Medicine | 2010

Remote Postoperative Epidural Hematoma after Subdural Hygroma Drainage

Wellingson Silva Paiva; Arthur Maynart Pereira Oliveira; Almir Ferreira de Andrade; Roger Schmidt Brock; Manoel Jacobsen Teixeira

Objective. Subdural hygroma is reported to occur in 5%–20% of all patients with closed head trauma, the treatment is controversial and in symptomatic cases surgical drainage is need. We report on a new case with remote acute epidural hematoma (AEH) after subdural hygroma drainage. Case Presentation. A 38-year-old man suffered blunt head trauma and had diffuse axonal injury grade III in CT scan. A CT scan that was late performed showed an increasing subdural fluid collection with mild mass effect and some effacement of the left lateral ventricle. We perform a trepanation with drainage of a hypertensive subdural collection with citrine aspect. Postoperative tomography demonstrated a large left AEH. Craniotomy and evacuation of the hematoma were performed. Conclusion. The mechanism of remote postoperative AEH formation is unclear. Complete reliance on neurologic monitoring, trust in an early CT scan, and a relative complacency after an apparently successful initial surgery for hygroma drainage may delay the diagnosis of this postoperative AEH.


Arquivos De Neuro-psiquiatria | 2015

Survival score scales of patients operated with spinal metastases: retrospective application in a Brazilian population

Eduardo Carvalhal Ribas; Luis Roberto Mathias Junior; Vinícius Monteiro de Paula Guirado; Roger Schmidt Brock; Mario Augusto Taricco; Mauro Miguel Daniel; Rafael Burgomeister Lourenço; Manoel Jacobsen Teixeira

Spinal cord epidural metastasis (SEM) is a common complication of systemic cancer. Predicting these patients 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 patients 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.


Arquivos De Neuro-psiquiatria | 2015

Application of indocyanine green video angiography in surgical treatment of intracranial aneurysms

Felix Hendrik Pahl; Matheus Fernandes de Oliveira; Roger Schmidt Brock; José Erasmo Dal’Col Lucio

Indocyanine green (ICG) video angiography has been used for several medical indications in the last decades. It allows a real time evaluation of vascular structures during the surgery. This study describes the surgical results of a senior vascular neurosurgeon. We retrospectively searched our database for all aneurysm cases treated with the aid of intraoperative ICG from 2009 to 2014. A total of 61 aneurysms in 56 patients were surgically clipped using intraoperative ICG. Clip reposition after ICG happened in 2 patients (3.2%). Generally, highly variable clip adjustment rates of 2%-38% following ICG have been reported since the introduction of this imaging technique. The application of ICG in vascular neurosurgery is still an emerging challenge. It is an adjunctive strategy which facilitates aneurismal evaluation and treatment in experienced hands. Nevertheless, a qualified vascular neurosurgeon is still the most important component of a high quality work.


Pediatric Neurosurgery | 2018

Traumatic Lumbosacral Spondyloptosis in a Pediatric Patient: Case Report and Literature Review

Vitor Nagai Yamaki; Barbara Albuquerque Morais; Roger Schmidt Brock; Wellingson Silva Paiva; Almir Ferreira de Andrade; Manoel Jacobsen Teixeira

A 4-year-old girl was admitted to the emergency department after having been buried beneath a wall. A computed tomography scan revealed anterior grade V L5–S1 spondylolisthesis, and magnetic resonance imaging showed a traumatic rupture of the fibrous annulus of the L5–S1 intervertebral disc and lesion of the anterior longitudinal and yellow ligaments. The patient underwent anterior and posterior fixation. Four months later she was able to walk independently, despite a persistent left foot drop. Additionally, we conducted a literature review on lumbosacral spondyloptosis in the pediatric population published between 1990 and 2017. We found 16 cases, 86.6% of which were male, with a mean patient age of 16 ± 5.05 years. Most patients underwent spine instrumentation. Based on the data reviewed, the neurological status at admission might be a valid predictor of outcome. Pedicle screws are a safe and reliable procedure for stable fixation of the spine in these cases. The removal of screws is discouraged.


World Neurosurgery | 2017

Brain Abscess After Halo Fixation for the Cervical Spine

Arthur José Maia Lopes; Almir Ferreira de Andrade; Igor Silva; Wellingson Silva Paiva; Roger Schmidt Brock; Manoel Jacobsen Teixeira

BACKGROUND Halo fixation is one of the possible treatments for cervical spine fractures. However, improper use of these devices may lead to many complications, such as pin loosening, halo dislocation, pin site infection, and intradural penetration. CASE DESCRIPTION We report the case of a 43-year-old man who first presented with a seizure and an altered level of consciousness 5 months after halo-vest placement for an odontoid fracture. Brain imaging showed a brain abscess, under the previous left parietal pin. The patient underwent abscess drainage and antibiotics were administered for 12 weeks. On hospital discharge, he presented with only mild impairments. CONCLUSIONS Misapplication of halo fixation devices may lead to serious complications, including intracranial pin penetration and brain abscesses. Proper use of the recommended technique may decrease the risk for complications related to the procedure.

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Manoel Jacobsen Teixeira

Federal University of São Paulo

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