1,720,977 research outputs found
Cost-effectiveness of NIV applied to chronic respiratory failure.Eur
No full textThe expansion of home mechanical ventilation (HMV) in the last 15 yrs was stimulated by the introduction of noninvasive mask ventilation and the recognition that more patient groups could benefit.In the management of healthcare resources, cost-analysis currently represents a method for evaluation of the expenditure due to the effects on health of a new (or specific) intervention and for assessing it in the economic perspective. Disabilityadjustedlife-yrs, healthy-yr equivalents and quality-adjusted life-yrs are all time-based measures of health that include the impact of interventions on years of life lost due to premature mortality and years of life lived with a nonfatal health outcome, weightedby the severity of that outcome.Although the effectiveness of noninvasive HMV has been addressed, the impact of this treatment on the overall costs has not been clearly reported or demonstrated and very few data based on a true economic analysis in patients under noninvasive HMV have been published. Direct and (partially) indirect cost calculations have been observed and reported, especially in chronic obstructive pulmonary disease patients under noninvasive HMV. The most recent data underline the large impact ofnoninvasive HMV on both patient outcome (reduction of recurrent admissions and increase in quality of life) and family burden (unemployment, financial and social issues), thus prompting further studies with appropriate cost-effectiveness and/or cost-utility analysis
Short-term Efficacy of Upper-Extremity Exercise Training in Patients With Chronic Airway Obstruction: A Systematic Review
No full textBackground, Objectives, and Measurements Patients with chronic airway obstruction (CAO) frequently experience dyspnea and fatigue during activities performed by accessory muscles of ventilation, which competitively participate in arm elevation. This systematic review of randomized controlled trials (RCTs) concerning patients with CAO addresses the effects of upper-extremity exercise training (UEET), added to lower-extremity training or comprehensive pulmonary rehabilitation, on the following patient-centered outcomes: exercise capacity, symptoms, ability to perform daily activities, and health-related quality of life. METHODS:/b> Studies were retrieved using comprehensive database and hand-search strategies. Two independent reviewers determined study eligibility based on inclusion criteria. A detailed description of treatments was mandatory. Reviewers rated study quality and extracted information on study methods, design, intervention, and results. RESULTS: /b> Forty publications were evaluated. Four RCTs met the inclusion criteria but had serious methodological limitations, which introduce possible biases that reduce their internal validity. The outcomes measured were heterogeneous, and the results were inconsistent regarding maximal exercise capacity, dyspnea, and health-related quality of life. No effect of UEET was demonstrated for measures of arm fatigue. Limitations and CONCLUSIONS:/b> The limited methodological quality of the studies retrieved prevented us from performing a meta-analysis, the results of which could be misleading. This systematic review shows that there is limited evidence examining UEET and that the evidence available is of poor quality. Therefore, a recommendation for the inclusion or exclusion of UEET in pulmonary rehabilitation programs for individuals with CAO is not possible. Further research is needed to definitively ascertain the effects of this training modality on patient-centered outcomes
Functional recovery following physical training in tracheotomized and chronically ventilated patients
No full textBACKGROUND: Rehabilitation is a non-pharmacologic therapy that can restore health and reverse the patient's disability, but the efficacy of rehabilitation in critically ill patients is not well documented.
METHODS: In a prospective cohort study, we assessed whether the degree of change in functional status after comprehensive rehabilitation influenced clinical outcomes in 77 tracheotomized patients (mean ± SD age 75 ± 7 y) admitted for difficult weaning to our regional weaning center. The care plan, including peripheral muscle training, was delivered daily. We recorded admission demographic, anthropometric, and functional characteristics. We measured the change in basic activities of daily living score (ΔBADL), survival, and weaning success rate as clinical outcomes. We performed the Pearson correlation analysis and linear regression, with ΔBADL as the dependent variable, to test the predictive power of the baseline measurements.
RESULTS: Sixty-seven patients (87%) survived, and 55 of them (74%) succeeded in weaning during their stay in the weaning center. The mean ± SD ΔBADL improvement was 2.5 ± 2.0 points (median 2 points). Baseline performance of the latissimus dorsi predicted ΔBADL (β = 0.388, 95% CI 0.111-1,664, P = .03). The probability of remaining ventilator-free (P = .043) and survival (P = .001) differed across the 4 ΔBADL categories (0 = no change, 1-2 = least improvement, and > 2 = improvement above median change).
CONCLUSIONS: Mortality rate and weaning success differ according to ΔBADL following active rehabilitation/training in tracheotomized, ventilated, difficult-to-wean patients. The performance of the latissimus dorsi was the only significant predictor of change
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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