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Porto, Portugal

Certal V.,Hospital Sao Sebastiao | Certal V.,University of Porto
Brazilian Journal of Otorhinolaryngology | Year: 2013

There are several surgical treatment modalities utilized for obstructive sleep apnea syndrome (OSAS). OSAS can cause excessive daytime sleepiness as well as cardiovascular morbidity and mortality. Patients who fail medical management often seek surgical treatment. Objective: This paper reviews surgical treatment options for obstructive sleep apnea syndrome to include original descriptions as well as outcomes for snoring, apnea-hypopnea indices, and mortality benefits. Method: A literature review was performed for OSAS surgical treatment options for soft tissue and skeletal surgeries. Articles with the original descriptions and surgical reviews are included for each procedure. Results: A total of twenty-eight surgical treatment modalities for OSAS were identified. Original article authors and year of description were obtained and presented. Polysomnographic data for apnea indices, apnea-hypopnea indices and mortality are presented. Conclusion: There is a large amount of variability in outcomes for sleep surgeries, however, in order to maximize success and cure rates, multiple procedures are most often necessary. Sleep surgeons must get familiar with modern surgical concepts and techniques, and participate in multi-disciplinary care in order to maximize treatment outcomes. Source

Certal V.,Hospital Sao Sebastiao | Certal V.,University of Porto | Certal V.,Stanford University | Nishino N.,Kansai Medical University | And 2 more authors.
Otolaryngology - Head and Neck Surgery (United States) | Year: 2013

Objective. There is an extensive amount of literature on surgeries as treatment for obstructive sleep apnea syndrome on adults. Previous systematic reviews have been performed to summarize the outcomes for sleep surgeries, with conflicting results. The objective of this study was to critically evaluate these systematic reviews to provide an overview of their quality, strengths, and conclusions. Data Sources. MEDLINE, Scopus, and the Cochrane Collaboration databases were searched from inception to April 2013. Review Methods. An overview of systematic reviews was undertaken. Studies included in this review are the systematic reviews whose primary objective was to evaluate the outcomes of sleep apnea surgery on adults. The methodological quality of the studies was analyzed with AMSTAR checklist, and the quality of evidence was evaluated using the GRADE assessment tool. Primary outcome measures assessed the effect of surgery on snoring, sleepiness, and the apnea-hypopnea index. Results. A total of 11 studies were included in this study, and the pooled overview includes 378 studies. The systematic reviews were mostly graded as low quality using the GRADE tool and low to moderate according to the AMSTAR checklist. Outcome for apnea-hypopnea index demonstrated substantial variation leading to conflicting results. Despite a high amount of heterogeneity, outcomes for sleepiness and snoring demonstrated significant improvement across included reviews. Conclusions. Although obstructive sleep apnea surgery is associated with improved outcomes in most studies, the level and quality of evidence reviews requires improvement. © American Academy of Otolaryngology - Head and Neck Surgery Foundation 2013. Source

Bento V.F.,University of Aveiro | Cruz V.T.,Hospital Sao Sebastiao | Ribeiro D.D.,University of Aveiro | Colunas M.M.,University of Aveiro | Cunha J.P.S.,University of Aveiro
Studies in Health Technology and Informatics | Year: 2012

In spite of the growing interest verified in the field of technology-based interventions for Stroke rehabilitation, there is still no global solution that is both successful and suitable for a widespread use [1,2]. In this article, we present a novel tele-rehabilitation tool designed to be used for ambulatory patients, and developed towards the motor recovery of the patient's upper-limb. The SWORD system combines a movement quantification system that analyzes the quality of the motor task performed with a biofeedback console. The proposed structure defines the SWORD system as a complete tele-rehabilitation framework that enables a direct connection between clinical and ambulatory settings. Currently a randomized clinical trial is being designed in order to assess the effectiveness of the SWORD tele-rehabilitation system. © 2012 The authors and IOS Press. All rights reserved. Source

Bento V.F.,University of Aveiro | Cruz V.T.,Hospital Sao Sebastiao | Ribeiro D.D.,University of Aveiro | Cunha J.P.S.,University of Aveiro
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS | Year: 2011

The paper proposes an integrated system to automatically assess motor function after neurological injury. A portable motion capture system was developed in order to obtain all the relevant three dimensional kinematics of the upper limb movement. These kinematics were analyzed by means of a decision tree classifier which features where inferred from the Functional Ability Score (FAS) of the Wolf Motor Function Test (WMFT). In addition, the system is able to correctly quantify the performance time of each selected task of the WMFT. In terms of the FAS the system and the clinician show coherent results for 3 out of 5 patients in the first task tested and 4 out of 5 for the second task tested. Regarding performance time, the mean error between the system and the clinician was of 0.216 s for the 25 trials performed (5 patients, 5 tasks each). These results represent an important proof of concept towards a system capable of precisely evaluate upper limb motor function after neurological injury. © 2011 IEEE. Source

Certal V.,Hospital Sao Sebastiao | Certal V.,University of Porto | Catumbela E.,University of Porto | Winck J.C.,University of Porto | And 3 more authors.
Laryngoscope | Year: 2012

Objectives/Hypothesis: Clinical symptoms and signs are routinely used to investigate pediatric obstructive sleep apnea (OSA). This study aimed to systematically assess the evidence for the diagnostic accuracy of individual or combined clinical symptoms and signs in predicting pediatric OSA. Study Design: A systematic review of the literature and diagnostic meta-analysis. Methods: Four medical databases were searched (from inception to August 2011). Studies were included that compared the clinical assessment with the current gold standard (full polysomnography). The study quality was assessed using the quality assessment tool for diagnostic accuracy studies. Summary estimates of diagnostic accuracy were determined using the sensitivity, specificity, positive and negative likelihood ratios, diagnostic odds ratio, and hierarchical summary receiver operating characteristic (HSROC) model for meta-analyses. Results: Ten diagnostic studies with 1,525 patients were included in the review. There was substantial variation in the sensitivity and specificity among different symptoms and signs, as well as across studies. Tonsillar size and snoring reported by parents or caregivers had high sensitivity but low specificity. In contrast, excessive daytime somnolence, observed apnea, and difficulty in breathing during sleep had high specificity but low sensitivity. Seven models of a combination of symptoms and signs presented moderate sensitivity (range, 0.04-0.94) and specificity (range, 0.28-0.99). The HSROC indicates poor diagnostic performance of the symptoms and signs in predicting pediatric OSA. Conclusions: Neither single nor combined symptoms and signs have satisfactory performance in predicting pediatric OSA. Alternative diagnostic models are necessary to improve the accuracy. Copyright © 2012 The American Laryngological, Rhinological, and Otological Society, Inc. Source

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