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Publicações

2018

COPD: understanding patients' adherence to inhaled medications

Autores
Duarte de Araujo, A; Teixeira, P; Hespanhol, V; Correia de Sousa, J;

Publicação
INTERNATIONAL JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE

Abstract
Background and objective: Adherence to inhaled medications by COPD patients is a challenging issue, but relatively understudied. The aim of this study is the characterization of adherence to inhaled medications by COPD patients, with a focus on patient-related determinants. Methods: Stable COPD outpatients >= 40 years of age from a respiratory unit and diagnosed according to the Global Initiative for Chronic Obstructive Lung Disease criteria were included in a cross-sectional study. The Measure of Treatment Adherence (MTA), the Beliefs about Medications Questionnaire (BMQ) and demographic, clinical, and COPD questionnaires were used. After completing these questionnaires, semi-structured interviews were carried out and participants were encouraged to justify their opinions and behaviors. Field notes were made during the interviews and each interview was analyzed before the next one. Quantitative and qualitative analyses of the variables were then performed. Results: A total of 300 out of 319 participants (mean age =67.7 years, 78.1% males) completed the MTA questionnaire. Of these, 31.3% were considered poorly adherent and 16.7% as nonadherent to the inhaled therapy. A statistically significant negative association was found between adherence and current smoking status (P=0.044), and between adherence and FEV1% (P=0.000). The mean BMQ Necessity score was higher in adherent patients (P=0.000), but the the mean Concern score was similar for both (P=0.877). We found nine patterns of poor-adherence, six reasons given for poor-adherence behaviors, five reasons for good-adherence behaviors and three patient-related domains on adherence to medications. Conclusion: Adherence is related to need perception and to the functional severity of the disease. A non-adherent patient is usually a current smoker with lower degree o f airflow limitation and lower perception of medication necessity. New information obtained was related to the patterns and reasons for different adherence behaviors, which are based on three major groups of patient related-determinants: health-related experiences, health-related behaviors and health-related beliefs.

2017

Understanding patient adherence to inhaled medication: The social representations of COPD

Autores
Duarte de Araujo, A; Teixeira, P; Figueiredo, M; Hespanhol, V; Correia de Sousa, J;

Publicação
REVISTA PORTUGUESA DE PNEUMOLOGIA

Abstract

2016

COPD: Are we using all the tools we have?

Autores
Araujo, A;

Publicação
REVISTA PORTUGUESA DE PNEUMOLOGIA

Abstract

2013

Tool to Support Computer Architecture Teaching and Learning

Autores
Nova, B; Ferreira, JC; Araujo, A;

Publicação
2013 1ST INTERNATIONAL CONFERENCE OF THE PORTUGUESE SOCIETY FOR ENGINEERING EDUCATION (CISPEE)

Abstract
Computer architecture is an important subject for informatics and electrical engineering courses. However, students display some difficulties in this subject, mainly due to the lack of educational tools that are intuitive, versatile and graphical. Existing tools are not adequate enough or are very specific. In this paper, an educational MIPS simulator, DrMIPS, is described. This tool simulates the execution of an assembly program on the CPU and displays the datapath graphically. Registers, data memory and assembled code are also displayed and a "performance mode" is also provided. Both unicycle and pipeline implementations are supported and the CPUs and their instruction sets are configurable. The tool is currently available for PCs and Android tablets, and is fairly intuitive and versatile on both platforms.

2012

B-Splines Based Built-in Self-Testing of a RF Power Amplifier

Autores
José Silva Borges; António Araújo; José Machado da Silva

Publicação
DCIS2012 - 27th Conference on Design of Circuits and Integrated Systems, Avignon, França

Abstract