The diagnostic accuracy of MRI in determining the relations between paraclinoid aneurysms and the cavernous sinus.

PURPOSE: The location of paraclinoid aneurysms is determinant for evaluation of its intradural compartment and risk of SAH after rupture. Advanced MRI techniques have provided clear visualization of the distal dural ring (DDR) to determine whether an aneurysm is intracavernous, transitional or intradural for decision-making. We analyzed the diagnostic accuracy of MRI in predicting whether a paraclinoid aneurysm is intracavernous, transitional or intradural. METHODS: We conducted a prospective cohort between January 2014 and December 2018. Patients with paraclinoid aneurysms underwent 3D fast spin-echo MRI sequence before surgical treatment. The DDR was the landmark for MRI characterization of the aneurysms as follow: (i) Intradural; (ii) Transitional; and (iii) Intracavernous. The MRI sensitivity, specificity, positive and negative likelihood ratios were determined compared to the intraoperative findings. We also evaluated the intertechnique agreement using the Cohen's kappa coefficient (κ) for dichotomous classifications (cavernous vs non-cavernous). RESULTS: Twenty patients were included in the cohort. The accuracy of MRI showed a sensitivity of 86.7% (95%CI:59.5-98.3) and specificity of 90.0% (95%CI:55.5-99.8). Analyzing only patients without history of SAH, accuracy test improved with a sensitivity of 92.3% (95%CI:63.9-99.8) and specificity reached 100% (95%CI: 63-100). Values of Cohen's kappa (κ), intertechnique agreement was considered substantial for dichotomous classifications (κ = 0.754; p < 0.001). For patients without previous SAH, intertechnique agreement was even more coincident for the dichotomous classification (κ = 0.901; p < 0.001). CONCLUSION: 3D fast spin-echo MRI sequence is a reliable and useful technique for determining the location of paraclinoid aneurysms in relation to the cavernous sinus, particularly for patients with no history of SAH.

In-Series Transcatheter Aortic Valve Replacement-in-Transcatheter Aortic Valve Replacement: ACURATE neo Transcatheter Heart Valve Degeneration Successfully Managed with Myval, Avoiding Coronary Flow Obstruction-A Case Report.

•Durability is vital for transcatheter aortic valve replacement in younger patients.•Aortic insufficiency is one of the features of structural valve degeneration.•Degenerated ACURATE neo can be treated with low implantation of an oversized Myval.

Revisiting Parkinson: After six decades, his triangle remains useful.

Background: The welcome advent and subsequent development of interventional neuroradiology led to an important paradigm shift in the management of many cerebrovascular diseases. This paradigm shift is especially true for carotid cavernous fistula and, for some time now, endovascular techniques are the mainstay approach for these lesions. The neurosurgical intervention should be adopted when the endovascular treatment is not practicable. Case Description: We present the surgical solution adopted to treat a patient with an indirect carotid cavernous fistula (CCF), with quickly progressive symptoms, in which it was not possible to treat using the currently standardized endovascular technique. A pretemporal craniotomy with peeling of the dura mater at the middle fossa and exposure of Parkinson's triangle on the lateral wall of the cavernous sinus was performed. Fibrin glue was injected by puncture of the lateral wall of the cavernous sinus for direct thrombosis of this sinus and the superior ophthalmic vein. Conclusion: In the now far 60s, Parkinson already treated patients with CCF effectively and elegantly through the lateral wall of the cavernous sinus. Revisiting techniques from the past, associating them with the supplies widely available today, can sometimes be the solution to some especially challenging cases that we face in our profession.

The Relationship between Exercise and Salivary Oxidative Stress: A Systematic Review.

Salivary content has been reported as a potential biomarker for oxidative stress assessments especially in context of exercise-induced oxidative stress. This systematic review following PRISMA guidelines aimed to evaluate the effects of physical exercise and changes promoted in oxidative stress identified in saliva. METHODS: Studies published up to May 2022 were searched in online databases (PubMed, Scopus, Web of Science, The Cochrane Library, LILACS, OpenGrey, and Google Scholar). Risk of bias evaluation were performed using the Quality Assessment Tool for Before-After (Pre-Post) Studies with No Control Group. RESULTS: A total of 473 references were identified and 22 considered eligible. In this case 14 studies reported increase of antioxidant parameters in saliva while eight studies demonstrated increased lipid peroxidation after exercise. Regarding nitrite levels, two studies showed higher levels after exercise. The quality of evidence was very low due to high heterogeneity, inconsistency and indirectness among studies according Grading of Recommendations, Assessment, Development and Evaluation analysis. CONCLUSION: Increase of oxidative stress and antioxidant activity in saliva appears to be present after exercise, especially at moderate intensity. However, the wide variety of methods leads to divergent data. For precision in salivary assessments, new research with larger sample sizes and better participant matching are recommended.

Bauhinia Linnaeus: an overview of the chemistry and bioactivity of essential oils / Bauhinia Linnaeus: una descripción general de la química y bioactividad de los aceites esenciales

Bauhinia genus comprises 300 diferent species distributed in tropical and subtropical forests. Infusions of some species have been frequently used in folk medicine to treat several ailments, especially diabetes. S tudies are focused on the extracts and little is reported about their essential oils. This review aims to compile data about the chemical composition and biological activities of essential oils from diferent species of the genus Bauhinia , in order to show the potential of these oils, since they have a rich composition in terpenoids, with emphasis on sesquiterpenes and diterpenes, which have a broad spectrum of biological actions and can be explored in various application areas.

El género Bauhinia comprende 300 especies diferentes distribuidas en bosques tropicales y subtropicales. Las infusiones de algunas especies se han utilizado con frecuencia en la medicina popular para tratar varias dolencias, especialmente la diabetes. Los estudios se centran en los extractos y se informa poco sobre sus aceites esenciales. Esta revisión tiene como objetivo recopilar datos sobre la composición química y activida des biológicas de los aceites esenciales de diferentes especies del género Bauhinia , con el fin de mostrar el potencial de estos aceites, ya que tienen una composición rica en terpenoides, con énfasis en sesquiterpenos y diterpenos, que tienen un amplio es pectro de acciones biológicas y pueden explorarse en diversas áreas de aplicación.

Processo de obtenção de consentimento livre e esclarecido para pessoas analfabetas em procedimentos de saúde / Process for obtaining informed consent for illiterate people in healthcare procedures

O Termo de Consentimento Livre e Esclarecido (TCLE) é um documento que faz parte do processo de obtenção da anuência de pacientes ou de participantes de pesquisa, para garantir seus direitos e atribuir seus deveres. Caso o TCLE contenha um texto complexo, ele restringirá, de certa forma, a liberdade de decisão de indivíduos analfabetos. Objetivo: avaliar a percepção de analfabetos sobre o conhecimento do TCLE e suas formas de manifestação de anuência para procedimentos de saúde. Material e método: trata-se de uma pesquisa transversal quali-quantitativa, cuja coleta de dados foi realizada com alunos da Educação de Jovens e Adultos (EJA) por meio de entrevista gravada após leitura de um TCLE modelo. Os resultados qualitativos foram analisados segundo a Técnica de Análise de Conteúdo, proposta por Bardin. Os quantitativos foram analisados pelo teste qui-quadrado e por análise de regressão logística por meio do software JAMOVI. Resultados: participaram da pesquisa 32 alunos. Os dados obtidos mostraram que o conhecimento prévio acerca do TCLE era baixo (34,37%), apenas 46,87% dos participantes compreenderam o documento, sendo 38% da 4ª etapa da EJA. Quase todos os participantes entenderam os benefícios em aplicar o TCLE nas práticas clínicas e 75% informaram que imagens facilitariam a compreensão do documento. Conclusão: concluiu-se que baixas habilidades de alfabetização afetam diretamente a autonomia para anuência em TCLE. A dificuldade na compreensão do TCLE pode estar relacionada aos elementos textuais, como o tamanho da fonte, utilização de termos difíceis e apresentação de um texto extenso contendo muitas informações

The Informed Consent (IC) is a document that is part of the process for obtaining the consent of patients or research participants, to guarantee their rights and assign their duties. The IC, by containing a complex text, restricts, in some way, the freedom of decision of illiterate individuals. Objective: to evaluate the perception of illiterate individuals on the knowledge of the IC and their forms of expression of consent to health procedures. Material and method: this is a quali-quantitative cross-sectional study, whose data collection was carried out with students of Youth and Adult Education (YAE) by means of recorded interview after reading an IC model. The qualitative results were analyzed according to the Content Analysis Technique, proposed by Bardin. Quantitative results were analyzed applying the Chi-square test and logistic regression analysis using the JAMOVI software. Results: 32 students participated in the research. The data obtained showed that the previous knowledge about the ICF is low (34.37%), only 46.87% of the participants understood the document, 38% of them from the 4th stage of YAE. Almost all participants understood the benefits in applying the IC in clinical practices and 75% claimed that images would facilitate understanding of the document. Conclusion: It was concluded that low literacy skills directly affect the autonomy to consent using the IC. The difficulty in understanding the IC may be related to textual elements, such as font size, use of difficult terms, and presentation of an extensive text containing a lot of information

Persea americana Mill.: Evaluation of cytogenotoxicity and phytochemical prospection of leaf extracts

Abstract Persea americana Mill., belonging to the family Lauraceae, is noteworthy for the large amount of ethnopharmacological information in its regard, attributing to it many and varied medicinal properties. The tea and alcoholic extracts made from its leaves are used in folk medicine to treat various ailments. This study was designed to analyze the cytogenotoxicity and underlying chemistry of aqueous and hydroalcoholic extracts of avocado leaves, using the Allium cepa and micronucleus tests. The results obtained by applying the experimental models demonstrate that the extracts did not have a genotoxic effect at any of the concentrations analyzed, and even demonstrated a certain protective effect, possibly due to the presence of flavonoids and phenols, both of which are antioxidant substances. However, the extracts did present a cytotoxic effect. There were numerous karyorrhectic cells and those with nuclear alterations related to cell death. At the highest concentrations, it was possible to observe cytoplasmic alterations and binucleated cells. The extracts also caused a significant reduction in the number of cells undergoing division. These effects can be a response to the phytochemical agents present in the extracts. The results suggest that the extracts contain bioactive components that deserve further studies related to cancer therapies.

Vertex epidural hematoma: A rare cause of post-traumatic headache and a diagnostic challenge.

BACKGROUND: Vertex epidural hematomas (VEH) account for only 8% of all epidural hematomas. However, these traumatic injuries may be underestimated or overlooked altogether when only computed tomography (CT) scans are used for diagnosis. The vertex may be a potential anatomic "blind spot" on this radiological method. In such cases, magnetic resonance (MRI) offers a great diagnostic aid. CASE DESCRIPTION: This manuscript reports a patient of a head trauma who developed progressive and intractable headache. MRI made the diagnosis of progressive VEH and highlighted the detachment of the superior sagittal sinus by the hematoma. Surgical treatment, because of the refractory clinical findings, was performed with good postoperative recovery. CONCLUSION: Multiple trauma patients with progressive and refractory headache should have their head CT thoroughly reviewed and, if necessary, be investigated with MRI.

Postoperative cerebral myiasis: A rare cause of wound dehiscence in developing countries.

BACKGROUND: Cerebral myiasis is a rare parasitic disease, especially in postoperative neurological surgery. CASE DESCRIPTION: We report a case of postoperative myiasis in a patient who underwent a craniotomy for resection of metastatic melanoma, evolving with wound dehiscence due to myiasis in the operative wound. CONCLUSION: Myiasis infestation should be a differential diagnosis of surgical wound dehiscence, particularly when the classic signs of inflammation are not present and computed tomography of the brain shows signs suggestive of this disease entity.

Microsurgical anatomy and internal architecture of the brainstem in 3D images: surgical considerations.

OBJECT Brainstem surgery remains a challenge for the neurosurgeon despite recent improvements in neuroimaging, microsurgical techniques, and electrophysiological monitoring. A detailed knowledge of the microsurgical anatomy of the brainstem surface and its internal architecture is mandatory to plan appropriate approaches to the brainstem, to choose the safest point of entry, and to avoid potential surgical complications. METHODS An extensive review of the literature was performed regarding the brainstem surgical approaches, and their correlations with the pertinent anatomy were studied and illustrated through dissection of human brainstems properly fixed with 10% formalin. The specimens were dissected using the fiber dissection technique, under ×6 to ×40 magnification. 3D stereoscopic photographs were obtained (anaglyphic 3D) for better illustration of this study. RESULTS The main surgical landmarks and their relationship with the cerebellum and vascular structures were identified on the surface of the brainstem. The arrangements of the white matter (ascending and descending pathways as well as the cerebellar peduncles) were demonstrated on each part of the brainstem (midbrain, pons, and medulla oblongata), with emphasis on their relationships with the surface. The gray matter, constituted mainly by nuclei of the cranial nerves, was also studied and illustrated. CONCLUSIONS The objective of this article is to review the microsurgical anatomy and the surgical approaches pertinent to the brainstem, providing a framework of its external and internal architecture to guide the neurosurgeon during its related surgical procedures.

Treatment of complex intracranial aneurysm: Case report of the simultaneous use of endovascular and microsurgical techniques.

BACKGROUND: The surgical treatment of complex intracranial aneurysms (CIAs) represents a significant challenge to the skill and expertise of the neurosurgeon. The natural history of complex cerebrovascular lesions is especially unfavorable because of the pressure effect on adjacent areas, the risk of embolism in the presence of intraluminal thrombi, and the possibility of hemorrhage through leakage or rupture of the aneurysm. The surgical strategy must be customized for each case in order to maximize the treatment effectiveness and the safety of the patient. CASE DESCRIPTION: A 68-year-old woman presented with a 10-month history of atypical headaches but no other neurological symptoms. Computed tomography scan and digital subtraction angiography revealed an unruptured saccular aneurysm on the M1 segment of the right middle cerebral artery. The lesion was 21 mm in length in its largest diameter and with an undefined neck (extensive involvement of the walls of the afferent vessel). Craniotomy was performed in order to expose the lesion and allow microsurgical dissection of the neck of the aneurysm and its adjacent structures. A balloon catheter was navigated via the internal carotid artery to a position alongside the aneurysm neck. With the balloon fully inflated, the aneurysm was punctured and drained, and a guide clip was located at the neck of the aneurysm. Additional clips were applied using a similar procedure to ensure the exclusion of the aneurysm. CONCLUSION: The patient recovered without complications and complete occlusion of the CIA was confirmed on follow-up angiography. A modified Rankin score of 0 was attributed to the patient 6 months after treatment. A multidisciplinary perspective is important in planning and executing the treatment of CIAs.

The occipital lobe convexity sulci and gyri.

OBJECT: The anatomy of the occipital lobe convexity is so intricate and variable that its precise description is not found in the classic anatomy textbooks, and the occipital sulci and gyri are described with different nomenclatures according to different authors. The aim of this study was to investigate and describe the anatomy of the occipital lobe convexity and clarify its nomenclature. METHODS: The configurations of sulci and gyri on the lateral surface of the occipital lobe of 20 cerebral hemispheres were examined in order to identify the most characteristic and consistent patterns. RESULTS: The most characteristic and consistent occipital sulci identified in this study were the intraoccipital, transverse occipital, and lateral occipital sulci. The morphology of the transverse occipital sulcus and the intraoccipital sulcus connection was identified as the most important aspect to define the gyral pattern of the occipital lobe convexity. CONCLUSIONS: Knowledge of the main features of the occipital sulci and gyri permits the recognition of a basic configuration of the occipital lobe and the identification of its sulcal and gyral variations.

Microsurgical anatomy of the optic radiation and related fibers in 3-dimensional images.

BACKGROUND: The fiber dissection technique provides unique 3-dimensional anatomic knowledge of the white matter. OBJECTIVE: To examine the optic radiation anatomy and its important relationship with the temporal stem and to discuss its findings in relation to the approaches to temporal lobe lesions. METHODS: We studied 40 cerebral hemispheres of 20 brains that had been fixed in formalin solution for 40 days. After removal of the arachnoid membrane, the hemispheres were frozen, and the Klingler technique was used for dissection under magnification. Stereoscopic 3-dimensional images of the dissection were obtained for illustration. RESULTS: The optic radiations are located deep within the superior and middle temporal gyri, always above the inferior temporal sulcus. The mean distance between the cortical surface and the lateral edge of the optic radiation was 21 mm. Its fibers are divided into 3 bundles after their origin. The mean distance between the anterior tip of the temporal horn and the Meyer loop was 4.5 mm, between the temporal pole and the anterior border of the Meyer loop was 28.4 mm, and between the limen insulae and the Meyer loop was 10.7 mm. The mean distance between the lateral geniculate body and the lateral margin of the central bundle of the optic radiation was 17.4 mm. CONCLUSION: The white matter fiber dissection reveals the tridimensional intrinsic architecture of the brain, and its knowledge regarding the temporal lobe is particularly important for the neurosurgeon, mostly because of the complexity of the optic radiation and related fibers.

Carteira de vacinação virtual / Virtual vaccination card

Apesar do constante crescimento do uso da tecnologia nas diversas áreas, ainda existem processos não informatizados, dependendo exclusivamente do uso da caneta e do papel, exemplo disso é a carteira de vacinação no Brasil. Em vários postos de saúde, os processos de registro da vacinação, desde o registro de quantas vacinas chegaram ao posto até o controle de quantas vacinas foram aplicadas diária e mensalmente são realizados através de fichas preenchidas manualmente pelos colaboradores destes postos. Esses procedimentos geram: inconsistência e perda de informações, difícil acesso a informações, dentre outros. Este artigo propõe um protótipo de carteira de vacinação virtual com o objetivo de propiciar o acesso ágil às informações registradas, armazenar informações de forma centralizada e organizada, permitindo a consistência e integridade de dados. Para isso, utiliza-se um cartão inteligente combinado a um ambiente web proporcionando acesso imediato e integral ao registro do histórico de vacinação de todo cidadão.

Despite the steady growth in the use of technology in different areas, there are still not computerized procedures, depending exclusively the use of pen and paper, example is the vaccination card in Brazil. In several health centers, all of vaccination registration processes, since the registration of all vaccines reached the post until track ofhow many vaccines were applied daily and monthly are performed through bookmarks manually filled by employees of these stations. These procedures create: inconsistency and loss of information, difficult access to information, among others. This paper purposes a prototype a virtual vaccination card in order to provide an agile access to recorded information, store information in a centralized and organized manner, allowing consistency and data integrity. For this,we use a combined smart card to web environment providing immediate and full access to the record of the vaccination history of all citizens.

Topical antibiotics and neurosurgery: Have we forgotten to study it?

BACKGROUND: For neurosurgery, the last decades have been a time of incredible improvement in areas such as imaging, microscopy, endoscopy, stereotactic guidance, navigation, radiosurgery and endovascular techniques. However, the efficacy of topical antibiotic prophylaxis in neurological operations remains to be established by neurosurgeons. METHODS: The authors did an historical review of the literature regarding the utilization of topical antibiotic prophylaxis in neurological operations. The Pub Med database of the U.S. National Library of Medicine / National Institutes of Health was utilized as the primary source of the literature. The authors performed the search by using the following Mesh terms: "neurosurgery" or "neurosurgical procedures" and "administration, topical" and "antibiotic prophylaxis"; "neurosurgery" or "neurosurgical procedures" and "administration, topical" and "antibacterial agents." RESULTS: In the last 70 years, we have poorly studied the use of topical antibiotics in neurosurgery. All the papers reported were Class III evidence. CONCLUSION: To the best of our knowledge, there is no publication that provided Class I or II evidence about topical antibiotic prophylaxis in neurosurgery.

Manejo cirúrgico minimamente invasivo para fratura com deslocamento da junção tóraco-lombar / Minimally invasive surgical management of fracture-dislocation at the thoracolumbar

Introdução: O acesso cirúrgico para o tratamento de fraturas tóraco-lombares é controverso. Relato de Caso: Os autores relatam o caso de uma fratura com deslocamento de L1 tratada através do acesso posterior no qual se realizou descompressão do canal espinhal, fusão interssomática, estabilização transpedicular, fusão póstero-lateral e redução da deformidade cifótica. Conclusão: O procedimento cirúrgico minimamente invasivo com artrodese circunferencial através do acesso posterior poderia ser considerado uma opção de tratamento em casos selecionados de fratura com deslocamento em L1.

Cistos sinoviais espinhais causando déficit neurológico: relato dois casos distintos / Spinal synovial cists causing neurological deficit: report of two distinct cases

Cistos sinoviais da coluna são normalmente assintomáticos e raramente determinam compressão radicular ou medular. Os autores relatam dois casos de cistos sinoviais da coluna vertebral. Um paciente possuía um cisto cervical causando mielopatia, e um segundo paciente apresentava um cisto lombar, com gradual quadro de radiculopatia. Em ambos os casos, os pacientes tiveram melhora dos sintomas e boa evolução clínica após remoção cirúrgica dos cistos. Os cistos sinoviais devem ser incluídos no diagnóstico diferencial de lesões extradurais raquidianas. A literatura é revista e a etiologia, apresentação clínica, diagnóstico e tratamento são discutidos.

Os sulcos e giros na face súpero-lateral do lobo occipital / The occipital lobe convexity sulci and gyri

Introdução: A anatomia da face súpero-lateral do lobo occipital é tão complexa e variável que a sua descrição precisa não é encontrada nos livros clássicos de anatomia. Os sulcos e giros occipitais da convexidade cerebral encontram-se descritos com nomenclaturas diferentes de acordo com os diversos autores. O objetivo deste estudo foi investigar e descrever a anatomia da face súpero-lateral lobo occipital e esclarecer a sua nomenclatura. Métodos: As configurações anatômicas dos sulcos e giros na face súpero-lateral do lobo occipital de 20 hemisférios cerebrais foram examinados a fim de identificar os padrões mais característicos e consistentes. Resultados: Os sulcos occipitais mais característicos e consistentes identificados neste estudo foram o sulco intraoccipital, o sulco occipital transverso e o sulco occipital lateral. A morfologia da junção do sulco occipital transverso com o sulco intraoccipital foi identificada como sendo o aspecto mais importante para definir o padrão de giros cerebrais da face súperolateral do lobo occipital. Conclusões: O conhecimento das principais características dos sulcos e giros occipitais permite o reconhecimento de uma configuração básica do lobo occipital e a identificação de suas principais variações anatômicas.

Background: The anatomy of the occipital lobe convexity is so intricate and variable that its precise description is not found in the classic anatomy textbooks, and the occipital sulci and gyri are described with different nomenclatures according to different authors. The aim of this study was to investigate and describe the anatomy of the occipital lobe convexity and clarify its nomenclature. Methods: The configurations of sulci and gyri on the lateral surface of the occipital lobe of 20 cerebral hemispheres were examined in order to identify the most characteristic and consistent patterns. Results: The most characteristic and consistent occipital sulci identified in this study were the intraoccipital, transverse occipital, and lateral occipital sulci. The morphology of the transverse occipital sulcus and the intraoccipital sulcus connection was identified as the most important aspect to define the gyral pattern of the occipital lobe convexity. Conclusions: Knowledge of the main features of the occipital sulci and gyri permits the recognition of a basic configuration of the occipital lobe and the identification of its sulcal and gyral variations.