Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Br J Surg ; 111(3)2024 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-38488204

RESUMO

BACKGROUND: Numerous surgical approaches exist for the treatment of pilonidal disease. Current literature on treatment is of poor quality, limiting the ability to define optimal intervention. The aim of this study was to provide real-world data on current surgical practice and report patient and risk-adjusted outcomes, informing future trial design. METHODS: This UK-wide multicentre prospective cohort study, including patients (aged over 16 years) who had definitive treatment for symptomatic pilonidal disease, was conducted between May 2019 and March 2022. Patient and disease characteristics, and intervention details were analysed. Data on patient-reported outcomes, including pain, complications, treatment failure, wound issues, and quality of life, were gathered at various time points up to 6 months after surgery. Strategies were implemented to adjust for risk influencing different treatment choices and outcomes. RESULTS: Of the 667 participants consenting, 574 (86.1%) were followed up to the study end. Twelve interventions were observed. Broadly, 59.5% underwent major excisional surgery and 40.5% minimally invasive surgery. Complications occurred in 45.1% of the cohort. Those who had minimally invasive procedures had better quality of life and, after risk adjustment, less pain (score on day 1: mean difference 1.58, 95% c.i. 1.14 to 2.01), fewer complications (difference 17.5 (95% c.i. 9.1 to 25.9)%), more rapid return to normal activities (mean difference 25.9 (18.4 to 33.4) days) but a rate of higher treatment failure (difference 9.6 (95% c.i. 17.3 to 1.9)%). At study end, 25% reported an unhealed wound and 10% had not returned to normal activities. CONCLUSION: The burden after surgery for pilonidal disease is high and treatment failure is common. Minimally invasive techniques may improve outcomes at the expense of a 10% higher risk of treatment failure.


Assuntos
Seio Pilonidal , Humanos , Idoso , Resultado do Tratamento , Estudos Prospectivos , Seio Pilonidal/cirurgia , Qualidade de Vida , Recidiva Local de Neoplasia , Dor , Recidiva
2.
Colorectal Dis ; 2024 Apr 21.
Artigo em Inglês | MEDLINE | ID: mdl-38644667

RESUMO

AIM: Research in pilonidal disease faces several challenges, one of which is consistent and useful disease classification. The International Pilonidal Society (IPS) proposed a four-part classification in 2017. The aim of this work was to assess the validity and reliability of this tool using data from the PITSTOP cohort study. METHOD: Face validity was assessed by mapping the items/domains in the IPS tool against tools identified through a systematic review. Key concepts were defined as those appearing in more than two-thirds of published tools. Concurrent and predictive validity were assessed by comparing key patient-reported outcome measures between groups at baseline and at clinic visit. The outcomes of interest were health utility, Cardiff Wound Impact Questionnaire (CWIQ) and pain score between groups. Significance was set at p = 0.05 a priori. Interrater reliability was assessed using images captured during the PITSTOP cohort. Ninety images were assessed by six raters (two experts, two general surgeons and two trainees), and classified into IPS type. Interrater reliability was assessed using the unweighted kappa and unweighted Gwet's AC1 statistics. RESULTS: For face validity items represented in the IPS were common to other classification systems. Concurrent and predictive validity assessment showed differences in health utility and pain between groups at baseline, and for some treatment groups at follow-up. Assessors agreed the same classification in 38% of participants [chance-corrected kappa 0.52 (95% CI 0.42-0.61), Gwet's AC1 0.63 (95% CI 0.56-0.69)]. CONCLUSION: The IPS classification demonstrates key aspects of reliability and validity that would support its implementation.

3.
Colorectal Dis ; 2024 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-38671581

RESUMO

AIM: Pilonidal sinus disease is a common condition treated by colorectal surgeons. There is a lack of literature in the field to guide optimal management of this condition. As part of the PITSTOP study, we aimed to identify policy and research priorities to provide direction to the field. METHOD: Patients and surgeons were invited to participate. A 'So what, now what' exercise was conducted, informed by data from PITSTOP. This generated statements for research and practice priorities. A three-round online Delphi study was conducted, ranking statements based on policy and research separately. Statements were rated 1 (not important) to 9 (important). Statements that were rated 7-9 by more than 70% of participants were entered into the consensus meeting. Personalized voting feedback was shown between rounds. A face-to-face meeting was held to discuss statements, and participants were asked to rank statements using a weighted choice vote. RESULTS: Twenty-two people participated in the focus group, generating 14 research and 19 policy statements. Statements were voted on by 56 participants in round 1, 53 in round 2 and 51 in round 3. A total of 15 policy statements and 19 research statements were discussed in the consensus round. Key policy statements addressed treatment strategies and intensity, surgeon training opportunities, need for classification and the impact of treatment on return to work. Research recommendations included design of future trials, methodology considerations and research questions. CONCLUSION: This study has identified research and policy priorities in pilonidal sinus disease which are relevant to patients and clinicians. These should inform practice and future research.

4.
Mol Genet Metab ; 134(1-2): 68-76, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34247933

RESUMO

The COVID-19 pandemic has impacted the education of children around the world, forcing a large proportion of teaching to be carried out remotely. The implications of this disruption have yet to be fully elucidated, but initial assessments suggest that COVID-19-related school closures and reliance on virtual learning may have a long-term negative impact on educational attainment and future earnings as well as life expectancy of children in the United States. Among children with neurodegenerative disorders, such as neuronopathic mucopolysaccharidoses (MPS disorders), the effects of the pandemic are likely to be even greater. We aim to shine a spotlight on the impact of COVID-19 on the education, treatment and general wellbeing of children and families affected by MPS disorders by highlighting the important role that educators and therapists play in supporting the neurocognitive function and quality of life of children with neuronopathic MPS disorders. This article will serve as a resource that caregivers, educators, clinicians and therapists can use when considering how best to advocate for children with neuronopathic MPS disorders in circumstances where in-school teaching or in-clinic treatment is compromised or not possible. Given that the current pandemic is likely to have a prolonged course and impact and that similar epidemics and pandemics are a near certainty in the future, it is essential that steps are taken to support the learning and care of children with neuronopathic MPS disorders. We must prioritize strategies to safely resume this fragile community's access to in-person education and supportive care, and to address gaps that have emerged during prolonged pauses in access, whenever possible.


Assuntos
COVID-19 , Educação a Distância , Mucopolissacaridoses , Criança , Humanos , Mucopolissacaridoses/fisiopatologia , Mucopolissacaridoses/terapia , Pandemias , Defesa do Paciente , Qualidade de Vida , Telemedicina
5.
Surg Endosc ; 35(5): 2169-2177, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-32405893

RESUMO

OBJECTIVE: To evaluate the utility of a new robot-assisted surgical system (the Versius Surgical System, CMR Surgical, Cambridge, UK) for use in minimal access general and colorectal surgery, in a preclinical setting. Robot-assisted laparoscopy has been developed to overcome some of the important limitations of conventional laparoscopy. The new system is designed to assist surgeons in performing minimal access surgery and overcome some of the challenges associated with currently available surgical robots. METHODS: Cadaveric sessions were conducted to evaluate the ability of the system to provide adequate surgical access and reach required to complete a range of general and colorectal procedures. Port and bedside unit positions were recorded, and surgical access and reach were evaluated by the lead surgeon using a visual analogue scale. A live animal (porcine) model was used to assess the surgical device's safety in performing cholecystectomy or small bowel enterotomy. RESULTS: Nine types of procedure were performed in cadavers by nine lead surgeons; 35/38 procedures were completed successfully. The positioning of ports and bedside units reflected the lead surgeons' preferred laparoscopic set-up and enabled good surgical access and reach. Cholecystectomy (n = 6) and small bowel enterotomy (n = 5) procedures performed in pigs were all completed successfully by two surgeons. There were no device-related intra-operative complications. CONCLUSIONS: This preclinical study of a new robot-assisted surgical system for minimal access general and colorectal surgery demonstrated the safety and effectiveness of the system in cadaver and porcine models. Further studies are required to assess its clinical utility.


Assuntos
Cirurgia Colorretal/instrumentação , Cirurgia Colorretal/métodos , Procedimentos Cirúrgicos Robóticos/instrumentação , Animais , Cadáver , Colecistectomia/métodos , Neoplasias Colorretais/cirurgia , Feminino , Humanos , Laparoscopia/instrumentação , Laparoscopia/métodos , Procedimentos Cirúrgicos Minimamente Invasivos/instrumentação , Procedimentos Cirúrgicos Robóticos/métodos , Cirurgiões , Suínos
6.
Mol Genet Metab ; 131(1-2): 181-196, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32917509

RESUMO

Neurological dysfunction represents a significant clinical component of many of the mucopolysaccharidoses (also known as MPS disorders). The accurate and consistent assessment of neuropsychological function is essential to gain a greater understanding of the precise natural history of these conditions and to design effective clinical trials to evaluate the impact of therapies on the brain. In 2017, an International MPS Consensus Panel published recommendations for best practice in the design and conduct of clinical studies investigating the effects of therapies on cognitive function and adaptive behavior in patients with neuronopathic mucopolysaccharidoses. Based on an International MPS Consensus Conference held in February 2020, this article provides updated consensus recommendations and expands the objectives to include approaches for assessing behavioral and social-emotional state, caregiver burden and quality of life in patients with all mucopolysaccharidoses.


Assuntos
Encéfalo/metabolismo , Mucopolissacaridoses/terapia , Doenças do Sistema Nervoso/terapia , Modalidades de Fisioterapia , Encéfalo/patologia , Ensaios Clínicos como Assunto , Disfunção Cognitiva/fisiopatologia , Humanos , Mucopolissacaridoses/genética , Mucopolissacaridoses/metabolismo , Doenças do Sistema Nervoso/genética , Doenças do Sistema Nervoso/metabolismo , Comportamento Problema , Qualidade de Vida
7.
Mol Genet Metab ; 121(2): 70-79, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28501294

RESUMO

The design and conduct of clinical studies to evaluate the effects of novel therapies on central nervous system manifestations in children with neuronopathic mucopolysaccharidoses is challenging. Owing to the rarity of these disorders, multinational studies are often needed to recruit enough patients to provide meaningful data and statistical power. This can make the consistent collection of reliable data across study sites difficult. To address these challenges, an International MPS Consensus Conference for Cognitive Endpoints was convened to discuss approaches for evaluating cognitive and adaptive function in patients with mucopolysaccharidoses. The goal was to develop a consensus on best practice for the design and conduct of clinical studies investigating novel therapies for these conditions, with particular focus on the most appropriate outcome measures for cognitive function and adaptive behavior. The outcomes from the consensus panel discussion are reported here.


Assuntos
Cognição , Mucopolissacaridoses/terapia , Sistema Nervoso Central/fisiopatologia , Criança , Ensaios Clínicos como Assunto , Determinação de Ponto Final , Humanos , Mucopolissacaridoses/fisiopatologia , Mucopolissacaridose I/fisiopatologia , Mucopolissacaridose I/terapia , Mucopolissacaridose II/fisiopatologia , Mucopolissacaridose II/terapia , Mucopolissacaridose III/fisiopatologia , Mucopolissacaridose III/terapia , Doenças do Sistema Nervoso/terapia , Modalidades de Fisioterapia
9.
J Neuroinflammation ; 12: 69, 2015 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-25886256

RESUMO

BACKGROUND: Evidence from clinical studies and preclinical animal models suggests that proinflammatory cytokine overproduction is a potential driving force for pathology progression in traumatic brain injury (TBI). This raises the possibility that selective targeting of the overactive cytokine response, a component of the neuroinflammation that contributes to neuronal dysfunction, may be a useful therapeutic approach. MW151 is a CNS-penetrant, small molecule experimental therapeutic that selectively restores injury- or disease-induced overproduction of proinflammatory cytokines towards homeostasis. We previously reported that MW151 administered post-injury (p.i.) is efficacious in a closed head injury (CHI) model of diffuse TBI in mice. Here we test dose dependence of MW151 to suppress the target mechanism (proinflammatory cytokine up-regulation), and explore the therapeutic window for MW151 efficacy. METHODS: We examined suppression of the acute cytokine surge when MW151 was administered at different times post-injury and the dose-dependence of cytokine suppression. We also tested a more prolonged treatment with MW151 over the first 7 days post-injury and measured the effects on cognitive impairment and glial activation. RESULTS: MW151 administered up to 6 h post-injury suppressed the acute cytokine surge, in a dose-dependent manner. Administration of MW151 over the first 7 days post-injury rescues the CHI-induced cognitive impairment and reduces glial activation in the focus area of the CHI. CONCLUSIONS: Our results identify a clinically relevant time window post-CHI during which MW151 effectively restores cytokine production back towards normal, with a resultant attenuation of downstream cognitive impairment.


Assuntos
Lesões Encefálicas/complicações , Encéfalo/metabolismo , Transtornos Cognitivos/etiologia , Citocinas/metabolismo , Análise de Variância , Animais , Encéfalo/efeitos dos fármacos , Proteínas de Ligação ao Cálcio/metabolismo , Transtornos Cognitivos/tratamento farmacológico , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Proteína Glial Fibrilar Ácida/metabolismo , Masculino , Aprendizagem em Labirinto/efeitos dos fármacos , Camundongos , Camundongos Endogâmicos C57BL , Proteínas dos Microfilamentos/metabolismo , Piridazinas/uso terapêutico , Pirimidinas/uso terapêutico , Fatores de Tempo
10.
Health Technol Assess ; 28(33): 1-113, 2024 07.
Artigo em Inglês | MEDLINE | ID: mdl-39045854

RESUMO

Background: There is no consensus on optimal management of pilonidal disease. Surgical practice is varied, and existing literature is mainly single-centre cohort studies of varied disease severity, interventions and outcome assessments. Objectives: A prospective cohort study to determine: • disease severity and intervention relationship • most valued outcomes and treatment preference by patients • recommendations for policy and future research. Design: Observational cohort study with nested mixed-methods case study. Discrete choice experiment. Clinician survey. Three-stage Delphi survey for patients and clinicians. Inter-rater reliability of classification system. Setting: Thirty-one National Health Service trusts. Participants: Patients aged > 16 years referred for elective surgical treatment of pilonidal disease. Interventions: Surgery. Main outcome measures: Pain postoperative days 1 and 7, time to healing and return to normal activities, complications, recurrence. Outcomes compared between major and minor procedures using regression modelling, propensity score-based approaches and augmented inverse probability weighting to account for measured potential confounding features. Results: Clinician survey: There was significant heterogeneity in surgeon practice preference. Limited training opportunities may impede efforts to improve practice. Cohort study: Over half of patients (60%; N = 667) had a major procedure. For these procedures, pain was greater on day 1 and day 7 (mean difference day 1 pain 1.58 points, 95% confidence interval 1.14 to 2.01 points, n = 536; mean difference day 7 pain 1.53 points, 95% confidence interval 1.12 to 1.95 points, n = 512). There were higher complication rates (adjusted risk difference 17.5%, 95% confidence interval 9.1 to 25.9%, n = 579), lower recurrence (adjusted risk difference -10.1%, 95% confidence interval -18.1 to -2.1%, n = 575), and longer time to healing (>34 days estimated difference) and time to return to normal activities (difference 25.9 days, 95% confidence interval 18.4 to 33.4 days). Mixed-methods analysis: Patient decision-making was influenced by prior experience of disease and anticipated recovery time. The burden involved in wound care and the gap between expected and actual time for recovery were the principal reasons given for decision regret. Discrete choice experiment: The strongest predictors of patient treatment choice were risk of infection/persistence (attribute importance 70%), and shorter recovery time (attribute importance 30%). Patients were willing to trade off these attributes. Those aged over 30 years had a higher risk tolerance (22.35-34.67%) for treatment failure if they could experience rapid recovery. There was no strong evidence that younger patients were willing to accept higher risk of treatment failure in exchange for a faster recovery. Patients were uniform in rejecting excision-and-leave-open because of the protracted nursing care it entailed. Wysocki classification analysis: There was acceptable inter-rater agreement (κ = 0.52, 95% confidence interval 0.42 to 0.61). Consensus exercise: Five research and practice priorities were identified. The top research priority was that a comparative trial should broadly group interventions. The top practice priority was that any interventions should be less disruptive than the disease itself. Limitations: Incomplete recruitment and follow-up data were an issue, particularly given the multiple interventions. Assumptions were made regarding risk adjustment. Conclusions and future work: Results suggest the burden of pilonidal surgery is greater than reported previously. This can be mitigated with better selection of intervention according to disease type and patient desired goals. Results indicate a framework for future higher-quality trials that stratify disease and utilise broad groupings of common interventions with development of a patient-centred core outcome set. Trial registration: This trial is registered as ISRCTN95551898. Funding: This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 17/17/02) and is published in full in Health Technology Assessment; Vol. 28, No. 33. See the NIHR Funding and Awards website for further award information.


Pilonidal disease is caused by ingrowing hairs between the buttocks. It can cause pain and infection and may need surgery. We do not know which operation gives the best results, or who operations help. PITSTOP aimed to find out which operation is the best and what is important to patients when deciding on surgery, and to suggest ideas for better treatment and future research. We looked at what operations were done and their outcomes. We interviewed patients about their experiences. Some completed a survey to help us understand what operations they might prefer based on risks and outcomes. Surgeons completed a survey about their experiences, and we explored whether a new tool could help us tell the difference between 'mild' and 'bad' disease. We used findings from these studies to help patients and surgeons give priorities for future practice and research. Six hundred and sixty-seven patients joined PITSTOP. People who had a major operation had more pain and took longer to return to normal activities. Some were still affected 6 months after surgery. However, disease recurrence was lower than after a minor procedure. Patients based decisions about treatment on the likelihood of success and the time to recover. The study and the surgeons' survey both showed marked differences in practice. Surgeons tended to offer one or two operations learned during training. A classification tool put cases in similar groups, but this did not influence treatment choices. The consensus exercise identified five research priorities, the top one being to put types of surgery into two groups. Of the five practice priorities, the top one was that surgery should not make the patient worse than the disease. There is variation in the treatment of pilonidal disease. Wound issues and impact on daily living should be avoided. The highlighted research questions should be addressed to improve care.


Assuntos
Seio Pilonidal , Humanos , Seio Pilonidal/cirurgia , Seio Pilonidal/terapia , Feminino , Masculino , Adulto , Estudos Prospectivos , Técnica Delphi , Recidiva , Pessoa de Meia-Idade , Adulto Jovem , Cicatrização , Dor Pós-Operatória , Preferência do Paciente , Índice de Gravidade de Doença , Adolescente , Reino Unido
11.
Surg Endosc ; 27(12): 4485-90, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23877764

RESUMO

BACKGROUND: The laparoscopic approach to repair of inguinal hernia has proven advantages over open repair. Repair of more technically challenging hernias, such as patients previously receiving prostatectomy, has been less studied and may not have these advantages. We aimed to compare safety, feasibility, and clinical outcomes for repairs in patients who previously underwent prostatectomy to control subjects. METHODS: We undertook a case-control study using a prospectively collected database. From 2004, all patients were routinely offered totally extraperitoneal laparoscopic repair. All patients who had a history of previous prostatectomy were identified and compared to a matched control group. Both operative and follow-up data were analyzed. RESULTS: Of 987 patients undergoing surgery during this time period, 52 prostatectomy patients were identified (44% open, 44% robotic, 3% laparoscopic) and matched to 102 control subjects. Accounting for bilateral repairs, 203 hernia repairs had been performed. Patients were well matched for age and American Society of Anesthesiologists score. Operative time was longer for prostatectomy patients (mean, 70 vs. 52 min, p < 0.0001); however, this reduced over time when comparing the first and second half prostatectomy patients (77 vs. 63 min, p = 0.144). Overall, there were no intraoperative or major postoperative complications and only one conversion (prostatectomy group). No significant differences were found for rates of minor postoperative complications, length of stay, or recurrence (n = 1, control group). No difference was observed for chronic pain, and all patients in each group reported satisfaction with surgery at contemporary follow-up. CONCLUSIONS: In experienced hands, totally extraperitoneal inguinal hernia repair for patients previously having undergone prostatectomy is safe and has equivalent outcomes to patients not having undergone prostatectomy, and is an option to open repair. Understandably, slightly longer operative times may be justified, given the benefits of early discharge and less postoperative pain after laparoscopic surgery.


Assuntos
Hérnia Inguinal/cirurgia , Herniorrafia/métodos , Laparoscopia/métodos , Prostatectomia , Idoso , Estudos de Viabilidade , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Dor Pós-Operatória/prevenção & controle , Peritônio , Estudos Retrospectivos , Prevenção Secundária , Fatores de Tempo , Cicatrização
12.
J Robot Surg ; 16(6): 1347-1354, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35107707

RESUMO

This international study aimed to understand, from the perspective of surgeons, their experience of performing minimal access surgery (MAS), to explore causes of discomfort while operating and the impact of poor ergonomics on surgeon welfare and career longevity across different specialties and techniques. A quantitative online survey was conducted in Germany, the UK and the USA from March to April 2019. The survey comprised 17 questions across four categories: demographics, intraoperative discomfort, effects on performance and anticipated consequences. In total, 462 surgeons completed the survey. Overall, 402 (87.0%) surgeons reported experiencing discomfort while operating at least 'sometimes'. The peak professional performance age was perceived to be 45-49 years by 30.7% of surgeons, 50-54 by 26.4% and older than 55 by 10.1%. 86 (18.6%) surgeons felt it likely they would consider early retirement, of whom 83 were experiencing discomfort. Our findings highlight the continued unmet needs of surgeons performing MAS, with the overwhelming majority experiencing discomfort, frequently in the back, neck and shoulders, and many likely to consider early retirement consequently. Innovative solutions are needed to alleviate this physical burden and, in turn, prevent economic and societal impacts on healthcare systems resulting from MAS limiting surgeon longevity.


Assuntos
Doenças Profissionais , Procedimentos Cirúrgicos Robóticos , Cirurgiões , Humanos , Pessoa de Meia-Idade , Doenças Profissionais/etiologia , Procedimentos Cirúrgicos Robóticos/métodos , Ergonomia , Inquéritos e Questionários , Alemanha , Reino Unido
13.
J Plast Reconstr Aesthet Surg ; 75(8): 2735-2740, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35606302

RESUMO

AIMS: The lateral orbital orbicularis propeller flap (LOOP) is a propeller flap raised on a non-axial orbicularis oculi pedicle. Once mastered, it is speedy to raise, extremely reliable, and capable of transposing thin, supple, and relatively hairless skin and subcutis from the temple region to the periocular region. We aim to present our experience in using the LOOP flap for the reconstruction of a range of periocular defects. METHOD: Retrospective review utilising our Mohs database, electronic records, and image library. RESULTS: A total of 44 reconstructions were performed. Of the 39 lower lid defects, 22 were full-thickness (bilamellar). Posterior lamella reconstructions in these 22 cases were free tarsoconjunctival graft (20), conchal cartilage with perichondrium (1), and Hewes flap (1). A total of 13 reconstructions of the 22 were total or near-total lid reconstructions. A further 17 patients had anterior lamella defects alone, of which 3 amounted to resurfacing the entire lid. However, 5 patients underwent upper lid reconstruction, 2 of which were 50% lid, 2 required a free tarsal graft, and 1 conchal cartilage graft with buccal mucosa. There were no instances of necrosis of either the flap or the posterior lamella grafts. There were 7 minor complications. CONCLUSION: In our unit, the LOOP flap has become the reconstruction of choice for laterally based, transversely extensive defects of upper lid, lower lid, and malar areas. Its reliability, relative simplicity, and excellent cosmetic and functional outcomes merit much wider utilisation amongst the plastic and ophthalmic surgery community.


Assuntos
Neoplasias Palpebrais , Procedimentos de Cirurgia Plástica , Neoplasias Palpebrais/cirurgia , Pálpebras/cirurgia , Músculos Faciais/cirurgia , Humanos , Procedimentos de Cirurgia Plástica/métodos , Reprodutibilidade dos Testes , Retalhos Cirúrgicos/cirurgia
14.
Blood ; 111(10): 5187-94, 2008 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-18281503

RESUMO

Whether leukocytes exert an influence on vascular function in vivo is not known. Here, genetic and pharmacologic approaches show that the absence of neutrophils leads to acute blood pressure dysregulation. Following neutrophil depletion, systolic blood pressure falls significantly over 3 days (88.0 +/- 3.5 vs 104.0 +/- 2.8 mm Hg, day 3 vs day 0, mean +/- SEM, P < .001), and aortic rings from neutropenic mice do not constrict properly. The constriction defect is corrected using l-nitroarginine-methyl ester (L-NAME) or the specific inducible nitric oxide synthase (iNOS) inhibitor 1400W, while acetylcholine relaxation is normal. iNOS- or IFNgamma-deficient mice are protected from neutropenia-induced hypotension, indicating that iNOS-derived nitric oxide (NO) is responsible and that its induction involves IFNgamma. Oral enrofloxacin partially inhibited hypotension, implicating bacterial products. Roles for cyclooxygenase, complement C5, or endotoxin were excluded, although urinary prostacyclin metabolites were elevated. Neutrophil depletion required complement opsinization, with no evidence for intravascular degranulation. In summary, circulating neutrophils contribute to maintaining physiological tone in the vasculature, at least in part through suppressing early proinflammatory effects of infection. The speed with which hypotension developed provides insight into early changes that occur in the absence of neutrophils and illustrates the importance of constant surveillance of mucosal sites by granulocytes in healthy mice.


Assuntos
Pressão Sanguínea , Interferon gama/fisiologia , Neutrófilos/fisiologia , Óxido Nítrico Sintase Tipo II/genética , Animais , Infecções Bacterianas/imunologia , Vasos Sanguíneos/enzimologia , Vasos Sanguíneos/metabolismo , Regulação Enzimológica da Expressão Gênica , Hipotensão/etiologia , Inflamação , Camundongos , Vasoconstrição
15.
BMJ Case Rep ; 12(4)2019 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-31015251

RESUMO

Small bowel obstruction (SBO) is common surgical presenting problem, accounting for roughly 15 000 laparotomies per year in the UK. However, SBO post laparoscopic transabdominal preperitoneal (TAPP) inguinal hernia repair is uncommon with an estimated incidence of 0.2%-0.5%. The common causes for SBO post-TAPP include inadequate closure, port-site herniation and adhesions. Here, we present a case of adhesional SBO related to stapling device from previous laparoscopic inguinal hernia repair and review alternative methods for mesh fixation. This case reports a rare but life-threatening complication from a commonly performed day case procedure and highlights importance of adequate surgical technique when inserting foreign bodies intra-abdominally. The patient required an emergency laparotomy and small bowel resection, developed postoperative ileus which managed with a nasogastric tube, intravenous fluids and parenteral nutrition and was discharged 12 days postoperatively.


Assuntos
Hérnia Inguinal/cirurgia , Intestino Delgado/patologia , Laparoscopia/efeitos adversos , Grampeamento Cirúrgico/efeitos adversos , Assistência ao Convalescente , Idoso , Hérnia Inguinal/patologia , Humanos , Obstrução Intestinal/diagnóstico por imagem , Obstrução Intestinal/etiologia , Obstrução Intestinal/cirurgia , Intestino Delgado/diagnóstico por imagem , Intestino Delgado/cirurgia , Laparoscopia/métodos , Laparotomia/métodos , Masculino , Complicações Pós-Operatórias/terapia , Telas Cirúrgicas/efeitos adversos , Aderências Teciduais/etiologia , Aderências Teciduais/cirurgia , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento
16.
Bioinspir Biomim ; 13(2): 026013, 2018 02 27.
Artigo em Inglês | MEDLINE | ID: mdl-29334081

RESUMO

We present the design, fabrication and testing of a novel all-optical 2D flow velocity sensor, inspired by a fish lateral line neuromast. This artificial neuromast consists of optical fibres inscribed with Bragg gratings supporting a fluid force recipient sphere. Its dynamic response is modelled based on the Stokes solution for unsteady flow around a sphere and found to agree with experimental results. Tuneable mechanical resonance is predicted, allowing a deconvolution scheme to accurately retrieve fluid flow speed and direction from sensor readings. The optical artificial neuromast achieves a low frequency threshold flow sensing of 5 mm s-1 and 5 µm s-1 at resonance, with a typical linear dynamic range of 38 dB at 100 Hz sampling. Furthermore, the optical artificial neuromast is shown to determine flow direction within a few degrees.


Assuntos
Biomimética/métodos , Peixes/fisiologia , Sistema da Linha Lateral/fisiologia , Óptica e Fotônica/instrumentação , Animais , Desenho de Equipamento , Hidrodinâmica , Óptica e Fotônica/métodos
18.
Plast Reconstr Surg ; 138(1): 95e-103e, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27348691

RESUMO

UNLABELLED: More than 30 years have passed since the first case series was published regarding the phenomenon of secondary intention healing in relation to lid margin defects. Despite the fascinating results, the technique has not gained widespread support. This study looks at a series of 34 marginal lower lid defects allowed to heal without intervention. The results are remarkable for their consistently high quality, in terms of both cosmetic and functional outcomes. Medial lid defects, in particular, yielded results that would be difficult to surpass by conventional reconstructive techniques. The evidence presented here shows that secondary intention healing in lid margin defects should be considered as a genuine alternative to formal reconstruction, challenging the established dogma of bilamellar repair. For certain lid defects it is quite possibly (and unexpectedly) the new treatment of choice. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.


Assuntos
Neoplasias Palpebrais/cirurgia , Pálpebras/cirurgia , Cicatrização , Idoso , Idoso de 80 Anos ou mais , Blefaroplastia/métodos , Neoplasias Palpebrais/patologia , Pálpebras/patologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Reoperação , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento
19.
J Plast Reconstr Aesthet Surg ; 68(10): 1352-7, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26188401

RESUMO

UNLABELLED: The area of the nose immediately medial to the nasofacial groove is a common site for relatively small but penetrating basal cell carcinomas (BCCs). Although larger lesions may necessitate formal subunit reconstruction, smaller lesions pose a considerable dilemma. Full-thickness skin grafts (FTSGs) often result in an unsightly contour defect. Local flap options exist, but they frequently violate subunit boundaries or anatomical landmarks. In particular, the single-stage nasolabial transposition flap is particularly prone to blunting of the nasofacial angle and fullness or pin-cushioning of the flap with concomitant loss of facial symmetry. METHOD: We present a consecutive case series of 21 patients with lesions at this site who underwent reconstruction with a combination of a subcutaneous flap from the adjacent cheek fat, which is then resurfaced with an overlying FTSG. RESULTS: A range of defects of dimensions up to 17 mm diameter were included in the series. There were no instances of haematoma, post-operative infection or graft failure. A single patient, who smoked 30 cigarettes daily, underwent a complex reconstruction combining a cartilage graft with a fat flap and a skin graft. He experienced some epidermal loss that healed without intervention, with a remarkable outcome. The results show this to be a reliable and reproducible method that delivers excellent restoration of the contour without disrupting the symmetry of the nasofacial sulcus. CONCLUSION: Augmenting a skin graft with a subcutaneous fat transposition flap is a simple technique that is quick to learn and straightforward to execute. Excellent outcomes were consistently obtained without the asymmetry and pin-cushioning often associated with local flaps at this site.


Assuntos
Tomada de Decisões , Neoplasias Nasais/cirurgia , Rinoplastia/métodos , Neoplasias Cutâneas/cirurgia , Transplante de Pele/métodos , Tela Subcutânea/transplante , Retalhos Cirúrgicos , Carcinoma Basocelular/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nariz/cirurgia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA