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PURPOSE: Evaluate perception of preparedness for independent practice following the Otorhinolaryngology-Head and Neck Surgery residency program of Université de Montréal. METHODS: Cross-sectional survey of graduates from the past 10 years. Participants were asked about their level of confidence at the end of their residency for various procedures using a 5-point Likert scale. RESULTS: 7 out of 27 procedures were mastered by most physicians at the end of residency. The highest confidence level was in head and neck surgery (4 out of 5 procedures with a mean confidence level of 4 or higher) and lowest in laryngology and otology (both having 3 procedures with a median confidence level of 2 or less). The lowest confidence level was seen in ossiculoplasty and thyroplasty, being the only procedures to have a mean confidence level below 2. The highest scores were seen in superficial parotidectomy, direct microlaryngoscopy and trans-oral drainage of an abscess. These latter were the only procedures in which 100% of the respondent had a confidence level of 4 or 5. DISCUSSION: It has recently been suspected that these fields were potential weaknesses, so adjustments were made. This study provides new information to improves the curriculum. Recent and incoming change's impact on resident's confidence will be assessed in the future. CONCLUSION: This study highlights procedures and Otorhinolaryngology-Head and Neck Surgery subspecialties in which more surgical exposure or curriculum changes could increase resident's confidence and skills as part of a comprehensive Otorhinolaryngology practice.
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Cirurgia Geral , Internato e Residência , Otolaringologia , Competência Clínica , Estudos Transversais , Currículo , Cirurgia Geral/educação , Humanos , Otolaringologia/educaçãoRESUMO
OBJECTIVES: We investigated the effect of topical steroids on clinical outcomes and related immune response of chronic rhinosinusitis with nasal polyp (CRSwNP) patients and in eradicating some polyps. We want to explore a new potential mechanism linked to Th-17 cells. METHODS: Prospective, double-blind, placebo-controlled studies with 24 allergic and nonallergic patients were randomized to either placebo or fluticasone furoate for 12 weeks. Assessment of clinical response, endoscopic score with biopsies of the inferior turbinate, and polyps before and after treatment were performed. Biopsies were stained for T-cells, eosinophils, neutrophils, and IL-17A/F. RESULTS: Steroid treatment improved the mean symptoms scores from 7.12 to 4.02 (P < .01) and the polyp score from 5.13 to 3.31 (P < .05), but the comparison with placebo was not statistically significant in nonallergics due to insufficient study power. Steroid treatment decreased eosinophil counts on allergics but not neutrophils or T-cells. The IL-17A/F expression was higher in nonallergics with high neutrophil counts and was inclined by steroids. Compared to baselines, IL-17 cells were significantly less in allergic individuals and were not observed in allergics and with high neutrophil counts. CONCLUSION: Topical steroids were more effective on certain nasal polyp phenotypes. Identification of polyp phenotype might be essential to ensure a better therapeutic response to intranasal corticosteroids.
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Anti-Inflamatórios/uso terapêutico , Fluticasona/uso terapêutico , Interleucina-17/metabolismo , Pólipos Nasais/tratamento farmacológico , Rinite/tratamento farmacológico , Sinusite/tratamento farmacológico , Administração Tópica , Adulto , Doença Crônica , Método Duplo-Cego , Feminino , Humanos , Técnicas Imunoenzimáticas , Masculino , Pessoa de Meia-Idade , Pólipos Nasais/complicações , Pólipos Nasais/imunologia , Estudos Prospectivos , Rinite/complicações , Rinite/imunologia , Sinusite/complicações , Sinusite/imunologiaRESUMO
The objective of the study was to determine the evidence of intratympanic steroids injections (ITSI) for efficacy in the management of the following inner ear diseases: Ménière's disease, tinnitus, noise-induced hearing loss (NIHL) and idiopathic sudden sensorineural hearing loss (ISSNHL). The data sources were literature review from 1946 to December 2014, PubMed and Medline. A systematic review of the existing literature was performed. Databases were searched for all human prospective randomized clinical trials using ITSI in at least one treatment group. The authors identified 29 prospective randomized clinical trials investigating the benefits of an intratympanic delivery of steroids. Six articles on Ménière's disease were identified, of which one favored ITSI over placebo in vertigo control. Of the five randomized clinical trials on tinnitus therapy, one study found better tinnitus control with ITSI. The only available trial on NIHL showed significant hearing recovery with combination therapy (ITSI and oral steroids therapy). Seventeen studies were identified on ISSNHL, of which 10 investigated ITSI as a first-line therapy and 7 as a salvage therapy. Studies analysis found benefits in hearing recovery in both settings. Due to heterogeneity in treatment protocols and follow-up, a meta-analysis was not performed. Given the low adverse effects rates of ITSI therapy and good patient tolerability, local delivery should be considered as an interesting adjunct to the therapy of the ISSNHL and NIHL. Only one article over six where ITSI therapy offers potential benefits to patients with Ménière's disease in the control of tinnitus and vertigo was found. ITSI does not seem to be effective in the treatment of tinnitus.
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Corticosteroides/uso terapêutico , Perda Auditiva Provocada por Ruído/tratamento farmacológico , Doença de Meniere/tratamento farmacológico , Zumbido/tratamento farmacológico , Humanos , Injeção Intratimpânica , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
INTRODUCTION: Wide Awake Local Anesthesia No Tourniquet (WALANT) technique has been widely used in hand surgery, but there are few prospective data on its use in forefoot surgery. HYPOTHESIS: The WALANT technique reduces pain compared to general anesthesia for bone surgery on the first ray of forefoot. METHODS: This was a prospective, longitudinal, comparative, non-randomized cohort study in adult patients undergoing bone surgery on the first ray of forefoot. The primary objective was the level of pain (0-10 visual analogic scale) 4 h after the procedure with WALANT technique versus general anesthesia supplemented by ropivacaine infiltration. RESULTS: A total 37 patients were analyzed in the WALANT group and 24 in the general anesthesia group (women, 90.2%; mean age, 51.3 years; hallux valgus, 85.2%; first metatarsal osteotomy, 80.3%). After generalized linear regression adjusted on a priori defined factors, there was no statistically difference for pain ≤3 at 4 h in WALANT vs. general anesthesia (odds-ratio 1.66; 95% CI, 0.17-20.49; p = 0.2548). At 24 h, pain level was also comparable in the two groups. Time spent in operating room was significantly shorter with WALANT (40.8 vs. 49.7 min; p = 0.0001). Mean length of stay in the recovery room was also significantly shorter with WALANT (4.4 vs. 75.6 min; p < 0.0001). Anxiety before/after surgery, uptake of analgesic/anti-inflammatory drugs and quality of life were comparable in the two anesthesia groups. CONCLUSION: Postoperative pain with WALANT technique or general anesthesia was comparable. Time spent in the operating room and in recovery room was significantly shorter with WALANT technique. LEVEL OF EVIDENCE: III; prospective non-randomized comparative study.
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OBJECTIVES: Many experts feel that in the absence of well-defined goals for success, they have an easier time identifying failure. As success ought to not be defined only by absence of failure, we aimed to define optimal outcomes for endoscopic sinus surgery (ESS) in chronic rhinosinusitis (CRS) by obtaining expert surgeon perspectives. METHODS: A total of 12 surgeons participated in this targeted consultation. Face to face semi-structured interviews were performed with expert surgeons in the field of CRS and ESS. General impressions and personal definitions of acceptable operative success and optimal operative outcomes were compiled and summarized. RESULTS: According to an expert survey, patients' main objectives are an improvement in their chief complain, a general improvement in quality of life (QoL), and a better overall symptomatic control. The most important aspects of endoscopy for defining a successful intervention were an adequate mucus circulation, a healthy mucosa, minimal edema, and patency of all explored cavities or ostia. In the assessment of surgical outcomes, it was determined that both objective and patient reported data must be carefully examined, with more attention given to subjective outcomes. CONCLUSIONS: According to data gathered from a Canadian expert consultation, a definition of success must be based on both subjective data and nasal endoscopy. We propose to define an acceptable outcome as either a subjective improvement of at least the minimal clinically improvement difference of a validated patient reported outcome questionnaire, along with a satisfactory endoscopic result (1) or a complete subjective resolution with a sub-optimal endoscopy (2).
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Endoscopia/métodos , Prova Pericial/métodos , Procedimentos Cirúrgicos Otorrinolaringológicos/métodos , Seios Paranasais/cirurgia , Encaminhamento e Consulta , Rinite/cirurgia , Sinusite/cirurgia , Adulto , Canadá , Doença Crônica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do TratamentoRESUMO
We present a case of a 15-year-old girl who presented to us with an unusual low back pain. About 7 years ago, this patient had corrective surgery for her idiopathic left thoracolumbar scoliosis. Recent surgery revealed a laceration of the posterior wall of the thoracic aorta by an impending screw thread. This injury was repaired by the vascular surgeons and, subsequently, the patient had full recovery without any complications.
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Aorta Torácica/lesões , Parafusos Ósseos/efeitos adversos , Fixadores Internos/efeitos adversos , Procedimentos Ortopédicos/efeitos adversos , Escoliose/cirurgia , Adolescente , Aorta Torácica/cirurgia , Feminino , Humanos , Procedimentos Ortopédicos/instrumentação , Procedimentos Ortopédicos/métodos , Resultado do Tratamento , Procedimentos Cirúrgicos VascularesRESUMO
BACKGROUND: Allergen immunotherapy is effective in allergic individuals however efforts are being made to improve its safety, convenience, and efficacy. It has recently been demonstrated that allergen-linked immunostimulatory DNA (ISS) is effective in stimulating an allergen-specific Th1 response with decreased allergenicity. The objective of this study is to investigate whether ISS linked to purified ragweed allergen Amb-a-1 (AIC) can inhibit local allergen-specific Th2 and induce allergen-specific Th1 responses in explanted nasal mucosa of ragweed-sensitive subjects. In addition, we set out to determine whether AIC is more effective compared to stimulation with unlinked Amb a 1 and ISS. METHODS: Tissue from ragweed-sensitive patients (n = 12) was cultured with whole ragweed allergen (RW), Amb-a-1, AIC, Amb-a-1 and ISS (unlinked), or tetanus toxoid (TT) for 24 hours. IL-4, -5, -13, TNF-alpha and IFN-gamma mRNA-positive cells were visualized by in situ hybridization and T cells, B cells and neutrophils were enumerated using immunocytochemistry. RESULTS: RW or Amb-a-1 increased the number of IL-4, IL-5, and IL-13 mRNA+ cells in the tissue compared to medium alone. AIC had similar cytokine mRNA reactivity as control tissue. AIC and TT increased IFNgamma-mRNA expression. Unlinked Amb-a-1 and ISS showed similar effects to AIC, however this response was weaker. The number of TNF mRNA+ cells, T cells, B cells and neutrophils remained unchanged. CONCLUSIONS: AIC is effective in stimulating a local allergen-specific Th1- and abolishing Th2-cytokine mRNA reactivity in the nose and may be considered as a strong candidate for an improved approach to immunotherapy in ragweed-sensitive individuals.
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Alérgenos/metabolismo , Mucosa Nasal/metabolismo , Oligodesoxirribonucleotídeos/metabolismo , Proteínas de Plantas/metabolismo , Rinite Alérgica Sazonal/imunologia , Células Th1/imunologia , Alérgenos/genética , Ambrosia/imunologia , Antígenos CD/metabolismo , Antígenos de Plantas , Células Cultivadas , Citocinas/biossíntese , Citocinas/genética , Engenharia Genética , Humanos , Imunização , Imunoterapia , Mucosa Nasal/imunologia , Mucosa Nasal/patologia , Oligodesoxirribonucleotídeos/genética , Proteínas de Plantas/genética , Pólen , Rinite Alérgica Sazonal/terapia , Células Th2/imunologiaRESUMO
BACKGROUND: The superiorly based facial artery musculomucosal (FAMM) flap is pedicled on the angular artery. This flap offers a well-vascularized mucosal surface allowing closure of medium size defects, most frequently within the oral cavity and intranasal region. METHODS: We describe a superiorly based harvest of the FAMM flap, which may be used for closure of multiple head and neck surgical defects. An operative technique video is provided, which can be viewed online. RESULTS: Our results demonstrate a fast and relatively straightforward harvest technique of the FAMM flap. This intraoral flap is a useful reconstructive tool, which also has the advantage to leave no visible external scars. CONCLUSION: The superiorly pedicled FAMM flap is a versatile and effective technique that may be integrated in the algorithm for reconstruction of head and neck defects.
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Músculos Faciais/transplante , Mucosa Bucal/transplante , Procedimentos de Cirurgia Plástica/métodos , Retalhos Cirúrgicos , Artérias , Músculos Faciais/irrigação sanguínea , Neoplasias de Cabeça e Pescoço/cirurgia , HumanosRESUMO
Objectives The primary goal is the indexation of validated methods used to assess surgical competency in otorhinolaryngology-head and neck surgery (ORL-HNS) residents. Secondary goals include assessment of the reliability and validity of these tools, as well as the documentation of specific procedures in ORL-HNS involved. Data Sources MEDBASE, OVID, Medline, CINAHL, and EBM, as well as the printed references, available through the Université de Montréal library. Review Methods The PRISMA method was used to review digital and printed databases. Publications were reviewed by 2 independent reviewers, and selected articles were fully analyzed to classify evaluation methods and categorize them by procedure and subspecialty of ORL-HNS involved. Reliability and validity were assessed and scored for each assessment tool. Results Through the review of 30 studies, 5 evaluation methods were described and validated to assess the surgical competency of ORL-HNS residents. The evaluation method most often described was the combined Global Rating Scale and Task-Specific Checklist tool. Reliability and validity for this tool were overall high; however, considerable data were unavailable. Eleven distinctive surgical procedures were studied, encompassing many subspecialties of ORL-HNS: facial plastics, general ear-nose-throat, laryngology, otology, pediatrics, and rhinology. Conclusions Although assessment tools have been developed for an array of surgical procedures, involving most ORL-HNS subspecialties, the use of combined checklists has been repeatedly validated in the literature and shown to be easily applicable in practice. It has been applied to many ORL-HNS procedures but not in oncologic surgery to date.
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Competência Clínica , Educação de Pós-Graduação em Medicina , Avaliação Educacional , Otolaringologia/educação , Humanos , Internato e ResidênciaRESUMO
BACKGROUND: A novel, bioabsorbable, fibrinogen-based implant has been developed as a mucosal dressing after endoscopic sinus surgery (ESS). This implant can be formulated with fluticasone propionate (FP) for local elution of corticosteroid to reduce postoperative inflammation and promote mucosal healing. OBJECTIVE: This study investigated the biocompatibility and pharmacokinetics of the implant in a rabbit model. METHODS: Implants with and without FP were placed on both intact and demucosalized maxillary sinuses of 33 New Zealand White rabbits. Sinuses with either intact or denuded bone without implants acted as controls. Histopathologic assessments were carried out at 5, 15, and 28 days. Concentrations of FP in the maxillary sinus mucosa, nasal cavity mucosa, and plasma were measured for up to 44 days. RESULTS: Implants placed on intact mucosa or denuded bone were grossly integrated within 15 days. Minimal foreign body reaction was seen with negligible differences for inflammation, fibrosis, or bone remodeling among controls, sinuses with the implant, or sinuses with the implant plus FP, at all time points. All samples also showed complete or near-complete percentage reepithelialization at 28 days, although the denuded bone controls demonstrated greater percentage reepithelialization at 5 days compared with denuded bone with the implant or implant plus FP (p < 0.0001). The maxillary sinus mucosa demonstrated levels of FP of >140 ng/g up to 44 days. Plasma concentrations of FP were generally very low and were undetectable after day 7. CONCLUSIONS: The implant and the implant plus FP seemed to be biocompatible in rabbits. The implant plus FP effectively eluted steroid locally over at least 44 days, with negligible plasma concentrations. Further studies are warranted regarding potential therapeutic applications in patients undergoing ESS for chronic rhinosinusitis.
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Implantes Absorvíveis , Fluticasona/farmacocinética , Teste de Materiais , Animais , Sistemas de Liberação de Medicamentos , Fluticasona/administração & dosagem , Seios Paranasais/cirurgia , Coelhos , Rinite/cirurgia , Sinusite/cirurgiaRESUMO
STUDY OBJECTIVES: The aim of the study was to measure the single-breath diffusing capacity of the lung for carbon monoxide (D(LCO)sb) in healthy subjects in the following two conditions originally proposed by the American Thoracic Society (ATS) guidelines: relaxation against the shutter; and full inspiration without straining. SETTING: D(LCO)sb was measured in 76 young adults in duplicate, in the two conditions. Mouth pressure was recorded during all of the trials. RESULTS: The mean (+/- SD) value of the duplicate D(LCO)sb measurements was higher when measured with the patient in the nonrelaxed condition than in the relaxed condition (32.65 +/- 7.65 vs 31.54 +/- 7.11 mL/min/mm Hg, respectively; p < 0.001). The mean effective alveolar volume measured during the single-breath maneuver (VAeff) was also higher in the nonrelaxed condition (VAeff: nonrelaxed condition, 5,779 +/- 1,093 mL; relaxed condition, 5,596 +/- 1,097 mL; p < 0.001), at least as a consequence of a higher inspiratory volume (Vin) in the nonrelaxed condition (nonrelaxed condition, 4,378 +/- 900 mL; relaxed condition, 4,232 +/- 902 mL; p < 0.001). Asking the subject performing a D(LCO)sb maneuver to relax on the shutter during apnea lowers the D(LCO)sb value by approximately 3.4% in comparison to full inspiration without straining, at least in part because it results in a reduced Vin. CONCLUSION: These data lend further support to the new European Respiratory Society/ATS Task Force recommendations (full inspiration maintained with near atmospheric intrapulmonary pressure).
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Apneia/metabolismo , Monóxido de Carbono/metabolismo , Troca Gasosa Pulmonar/fisiologia , Relaxamento/fisiologia , Adulto , Feminino , Humanos , Masculino , RespiraçãoRESUMO
OBJECTIVE: To determine the feasibility and tolerability of a steroid-eluting middle ear device on an animal model. STUDY DESIGN: Prospective experimental. SETTING: Experimental animal study. SUBJECTS AND METHOD: Mometasone furoate (MF)-eluting miniature sticks were implanted through a myringotomy incision into the middle ear of 10 guinea pigs. Two additional ears of 2 animals served as controls. Fourteen days after implantation, perilymphatic fluid was collected through an endaural cochleostomy. MF concentrations were measured with high-performance liquid chromatography, and the middle ear mucosal inflammation was graded with hematoxylin and eosin colorations. RESULTS: Fourteen days after implantation, all tympanic membranes had fully healed. An average of 165 ng/mL of MF was detected in the perilymphatic fluid of the experimental ears, and none was measured in control ears. Microscopic residues of the ministicks were found in 90% of the samples, confirming the bioabsorbable properties of this device. Histologic analysis of the middle ear mucosa found similar inflammation profiles in both groups, thereby suggesting middle ear tolerability. CONCLUSION: MF-coated bioabsorbable miniature stick allows for prolonged delivery over 14 days without injuring the middle ear mucosa. Middle ear-sustained steroid delivery may prove to be beneficial in numerous neurotologic conditions.
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Implantes Absorvíveis , Orelha Interna/efeitos dos fármacos , Furoato de Mometasona/administração & dosagem , Stents , Animais , Cromatografia Líquida de Alta Pressão , Estudos de Viabilidade , Cobaias , Modelos Animais , Estudos ProspectivosRESUMO
Objectives The superiorly pedicled facial artery musculomucosal (FAMM) flap has been successfully used for reconstruction of head and neck defects since 1992. Common sites of defects include the oral cavity and oropharynx. This article presents a clinical case in which we have successfully used a newly developed modification of the FAMM flap for bulky nasopharyngeal and skull base reconstruction. Results Our patient is a 71-year-old man who presented with a large parapharyngeal and clival chordoma. After tumor removal through combined endoscopic and cervical approach, the internal carotid artery (ICA) in the nasopharyngeal portion was left exposed. A modified superiorly based FAMM flap measuring up to 10 cm in length and 2.5 cm in width was successfully harvested and used to completely cover the defect and the ICA. The flap survived local radiation therapy at the long-term follow-up. Conclusion We have developed a new modification of the FAMM flap, using the fascia of the masseter muscle. This is the first reported case in the literature using a modified FAMM flap for the reconstruction of nasopharyngeal and skull base defect.
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BACKGROUND: Exposure to bacterial products in early life could protect against development of atopy. We examined the effect of bacterial lipopolysaccharide on allergic inflammation and expression of cytokines and lipopolysaccharide receptor (toll-like receptor 4 TLR4) in nasal mucosa of 15 atopic children and ten atopic adults. METHODS: Explanted mucosa was cultured with allergen with or without lipopolysaccharide (0.1 mg/L) for 24 h. Immunocytochemistry and in-situ hybridisation were used to phenotype the cells and cytokines. FINDINGS: In explants from atopic children, lipopolysaccharide prevented allergen-induced T-helper type 2 (Th2) inflammation and upregulated Th1 cytokine reactivity and expression. These effects were blocked by antibody to interleukin 10. In children but not in adults, lipopolysaccharide caused increases of three times in T-cell reactivity, five times in T-cell proliferation, and four times in expression of interleukin 10 compared with mucosa stimulated with allergen alone. This difference in response was mirrored by lipopolysaccharide-induced increases in TLR4 reactivity in children but not adults. TLR4 receptor was expressed by CD3-positive T cells, and TLR4-positive cells contained interleukin 10. Lipopolysaccharide increased expression of cells positive for both CD3 and TLR4; both TLR4 and interleukin 10; and both CD4 and CD25. INTERPRETATION: Lipopolysaccharide inhibits allergic inflammation in nasal mucosa of atopic children by skewing local immune responses from Th2 to Th1 and upregulating production of interleukin 10. These effects are mediated by TLR4. Our results emphasise an important difference between adults and children in their ability to respond to bacterial products. These differences could have a role in normal maturation of the immune system.
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Hipersensibilidade Imediata/imunologia , Lipopolissacarídeos/imunologia , Glicoproteínas de Membrana/metabolismo , Mucosa Nasal/imunologia , Mucosa Nasal/metabolismo , Receptores de Superfície Celular/metabolismo , Hipersensibilidade Respiratória/imunologia , Adulto , Alérgenos/imunologia , Complexo CD3/metabolismo , Pré-Escolar , Técnicas de Cultura , Citocinas/metabolismo , Humanos , Hipersensibilidade Imediata/metabolismo , Hipersensibilidade Imediata/patologia , Imuno-Histoquímica , Inflamação , Glicoproteínas de Membrana/imunologia , Mucosa Nasal/patologia , Receptores de Superfície Celular/imunologia , Hipersensibilidade Respiratória/metabolismo , Hipersensibilidade Respiratória/patologia , Células Th1/imunologia , Células Th1/metabolismo , Células Th2/imunologia , Células Th2/metabolismo , Receptor 4 Toll-Like , Receptores Toll-LikeAssuntos
Cistos do Sistema Nervoso Central/complicações , Doenças da Hipófise/etiologia , Adulto , Complexo CD3/metabolismo , Cistos do Sistema Nervoso Central/patologia , Feminino , Humanos , Imageamento por Ressonância Magnética , Procedimentos Neurocirúrgicos/métodos , Doenças da Hipófise/diagnóstico , Doenças da Hipófise/cirurgia , Ruptura EspontâneaRESUMO
OBJECTIVE: Whether instillation into the maxillary sinus of topical budesonide affected the immune response and improved allergic patients with chronic rhinosinusitis that had persistence of symptoms despite appropriate surgical intervention was assessed. STUDY DESIGN: Double-blind placebo-controlled. METHODS: Twenty-six patients with allergy to house dust mites who had previously had surgery and who had persistent symptoms of disabling rhinorrhea or pressure-pain resistant to oral antibiotics and intranasal corticosteroids were recruited. During the double-blind study, patients instilled 256 microg budesonide daily or placebo through an intubation device (maxillary antrum sinusotomy tube) into one of the maxillary sinuses for 3 weeks before clinical assessment and a second biopsy. RESULTS: We found an improvement in the symptom scores in 11 of the 13 patients who received budesonide; we also found a decrease in CD-3 (P = .02) and eosinophils (P = .002), and a decrease in the density of cells expressing interleukin4 (P = .0001) and interleukin-5 messenger RNA (P = .006) after treatment. CONCLUSION: Topical budesonide delivered through a maxillary antrum sinusotomy tube can control chronic rhinosinusitis that persists after surgery.
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Anti-Inflamatórios/administração & dosagem , Budesonida/administração & dosagem , Sinusite Maxilar/tratamento farmacológico , Complicações Pós-Operatórias/tratamento farmacológico , Rinite Alérgica Perene/tratamento farmacológico , Administração Intranasal , Adulto , Doença Crônica , Método Duplo-Cego , Endoscopia , Feminino , Glucocorticoides , Humanos , Intubação , Masculino , Seio Maxilar/efeitos dos fármacos , Sinusite Maxilar/diagnóstico , Sinusite Maxilar/cirurgia , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico , Rinite Alérgica Perene/diagnóstico , Rinite Alérgica Perene/cirurgia , Autoadministração , Irrigação TerapêuticaRESUMO
In recent years many automatic methods have been developed to help physicians diagnose brain disorders, but the problem remains complex. In this paper we propose a method to segment brain structures on two 3D multi-modal MR images taken at different times (longitudinal acquisition). A bias field correction is performed with an adaptation of the Hidden Markov Chain (HMC) allowing us to take into account the temporal correlation in addition to spatial neighbourhood information. To improve the robustness of the segmentation of the principal brain structures and to detect Multiple Sclerosis Lesions as outliers the Trimmed Likelihood Estimator (TLE) is used during the process. The method is validated on 3D+t brain MR images.
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Encéfalo/patologia , Imageamento Tridimensional/métodos , Imageamento por Ressonância Magnética/métodos , Cadeias de Markov , Algoritmos , Bases de Dados como Assunto , Substância Cinzenta/patologia , Humanos , Internet , Esclerose Múltipla/diagnóstico , Fatores de Tempo , Substância Branca/patologiaRESUMO
BACKGROUND: Treatment options for chronic rhinosinusitis with recurrent polyposis (CRSwNP) after endoscopic sinus surgery (ESS) are limited, and include frequent use of systemic steroids and revision surgery. A bioabsorbable, steroid-eluting implant was studied for its ability to dilate sinuses obstructed by polyps and provide localized, controlled steroid delivery to reestablish sinus patency. This study assessed the initial feasibility, safety, and efficacy of steroid-eluting implants placed in the office setting in patients who were candidates for revision ESS. METHODS: Prospective, multicenter study enrolling 12 patients who had prior ESS but experienced recurrent polyposis refractory to medical therapy. Implants were placed bilaterally under topical anesthesia in-office. Follow-up through 6 months included endoscopic grading, patient-reported outcomes (22-item Sino-Nasal Outcomes Test [SNOT-22]) and need for revision ESS. RESULTS: Implants were successfully inserted in 21 of 24 (88%) ethmoid sinuses, resulting in 11 evaluable patients. No serious adverse events occurred. Within 1 month, mean bilateral polyp grade was reduced from 4.5 at baseline to 2.3 (p = 0.008) and sustained through 6 months (2.33; p = 0.008). Mean SNOT-22 score was significantly improved from 2.19 at baseline to 0.90 within 1 month (p = 0.001) and sustained to 6 months (1.03; p = 0.012). Sixty-four percent of patients were no longer revision ESS candidates at 6 months. CONCLUSION: The study provided initial clinical evidence of the feasibility, safety, and efficacy of in-office steroid-eluting implant placement in CRS patients with recurrent polyposis after ESS. Although further studies are needed, the results suggest this therapy may provide a safe and effective, office-based option for the treatment of obstructive polyposis.
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Pólipos Nasais/terapia , Seios Paranasais/cirurgia , Implantação de Prótese , Rinite/terapia , Sinusite/terapia , Adulto , Assistência Ambulatorial , Endoscopia , Estudos de Viabilidade , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Seios Paranasais/efeitos dos fármacos , Estudos Prospectivos , Próteses e Implantes/estatística & dados numéricos , Recidiva , Esteroides/administração & dosagem , Resultado do Tratamento , Adulto JovemRESUMO
OBJECTIVES/HYPOTHESIS: Failure in skull base defects reconstruction following tumor resection can have serious consequences such as ascending meningitis and pneumocephaly. The nasoseptal flap showed a very low incidence of cerebrospinal fluid leak but is not always available. The superiorly pedicled facial artery musculomucosal (FAMM) flap has been successfully used for reconstruction of head and neck defects. Our objective is to show that the FAMM flap can be used as a new alternative in skull base reconstruction. STUDY DESIGN: Cadaveric study. Feasibility. METHODS: Thirteen specimens underwent bilateral FAMM flap dissection. Two new modifications of the traditional FAMM flap have been developed. Feasibility in FAMM flap transfer to the skull base was investigated through endoscopic skull base dissection and maxillectomy in four specimens. Measurements were recorded for each harvested flap. RESULTS: The mean surface area of the modified FAMM flap efficient for reconstruction was 15.90 cm(2) . The flaps easily covered the simulated defects of the frontal sinus and the fovea ethmoidalis areas. Modifications of the traditional FAMM flap were necessary for a tension-free coverage of the planum sphenoidale and sella turcica. CONCLUSION: The FAMM flap holds high potential as a new alternative vascular flap in skull base reconstruction. However, it has not been used in patients yet and should be considered only when other options are not available. New modifications developed in this article can elongate the traditional FAMM flap, potentially contributing to a tighter seal of the skull base defect than FAMM flap alone.
Assuntos
Artérias/cirurgia , Rinorreia de Líquido Cefalorraquidiano/cirurgia , Endoscopia/métodos , Face/irrigação sanguínea , Procedimentos de Cirurgia Plástica/métodos , Neoplasias da Base do Crânio/cirurgia , Base do Crânio/cirurgia , Cadáver , Vazamento de Líquido Cefalorraquidiano , Endoscopia/efeitos adversos , Estudos de Viabilidade , Humanos , Procedimentos de Cirurgia Plástica/efeitos adversos , Retalhos Cirúrgicos/irrigação sanguíneaRESUMO
OBJECTIVES/HYPOTHESIS: To determine the interrater reliability of a set of postoperative endoscopic scoring parameters in patients with chronic rhinosinusitis who have undergone endoscopic sinus surgery (ESS). STUDY DESIGN: Prospective cohort with retrospective review. METHODS: One hundred twenty video-endoscopic evaluations in 20 subjects recorded at 14, 30, and 45 days after ESS were scored in real time by the clinical investigators who performed the endoscopies and recorded the videos and retrospectively by an independent panel of four sinus surgeons who were blinded to all information. The scoring parameters included categoric grading for adhesion formation and middle turbinate position and continuous grading (visual analog scale) for degree of inflammation and crusting. Interrater reliability of the panel members was assessed using the Fleiss kappa test, bias index and prevalence index for categoric data, and the Shrout-Fleiss test for continuous data. The level of agreement between the panel and the real-time clinical investigator was also assessed. RESULTS: For categoric variables, strong agreement between raters on the panel was found for both middle turbinate position (kappa=0.499, prevalence index=0.925) and adhesions (kappa=0.364, prevalence index=0.829). For continuous data, good agreement between raters was found for both inflammation (reliability coefficient=0.554) and crusting (reliability coefficient=0.620). Real-time investigator scoring and panel scoring showed strong agreement. CONCLUSIONS: These results suggest that the endoscopic scoring parameters assessed (middle turbinate position, adhesions, inflammation, and crusting) have acceptable interexaminer reproducibility and are suitable for evaluating ESS outcomes in the postsurgical period.