Estratégia de análise para avaliação da usabilidade de dispositivos médicos na percepção do usuário: um estudo com pacientes em tratamento de hemodiálise

Abstract

Studies have shown the importance of including the user's experience in measuring the usability of medical devices. Still, the user's assessment depends on the context of use for the treatment received. To measure the usability in such a way as to separate these effects and understand the sources affecting users' perceptions, the article proposes an analytical strategy that assesses the effect of the context of use on measuring the device's usability. Next, we create indicators that are free of these effects to understand the overall assessment of the device. Multivariate analysis of variance and exploratory factor analysis are used to achieve the objectives. The study is illustrated by means of a survey of 200 hemodialysis patients in hospitals and clinics in Porto Alegre, Rio Grande do Sul State, Brazil. The results suggest that assessment of the medical device differs (p < 0.05) according to the setting, fistula site, and patient's sex, age, and schooling. The setting influenced the most variables, including the degree of trust in the procedures. Three indicators were created: procedures, treatment setting, and device characteristics. The indicators allowed assessing which equipment brands, types of procedures, and treatment settings provide the best results. The method can be replicated in the assessment of medical devices, training health administrators, and assessing usability through summary indicators, besides identifying aspects to improve usability in medical treatment.

Relationship between the comfort level of chronic renal patients and sociodemographic and clinical variables

“…This symptom proved to be a factor that specifically interferes with the environmental and psychospiritual comfort of patients on hemodialysis. Regarding the environment, the hemodialysis clinic often causes fear in patients due to the sound signals linked to the complications that can occur in the sessions; as well as due to the discomfort caused by the chair, leading the individual to become impatient and / or anxious to conclude the session (19) .…”

Segurança do paciente na usabilidade de bombas de infusão na terapia intensiva: revisão integrativa

“…Ou seja, um sistema é considerado eficaz quando permite que os usuários atinjam seus objetivos (10)(11)(12) . Um sistema difícil de utilizar e aprender, com informações inacessíveis e sem ergonomia, desmotiva o usuário e faz com que o mesmo deixe de utilizar o sistema, para isto é necessário que haja um entendimento por parte dos gestores da importância da aquisição de bombas de fácil manuseio, para que reduzam as chances de ocorrência de eventos adversos (14,15) .…”

Contextos de experiência de estar (des)confortável de pacientes com doença renal crônica

“…These data corroborate a study of environmental dissatisfaction, measured on a scale of 1 to 10, whose patients undergoing hemodialysis showed dissatisfaction with the sound signals emitted by the machine (mean of 5.98), followed by discomfort caused by the chair (mean of 6.79). In addition, interviewees reported that these two factors cause discomfort, since they make it difficult to sleep during the session 28 .…”

“…Thus, it is pointed out that these factors are modifiable and that, according to Kolcaba's theory, nurses can alter environmental characteristics, such as noise and furniture, to provide comfort to the patient 10 . Moreover, to improve the environmental aspect, it is necessary to perform training among the multi-professional team and invest in the infrastructure of the hemodialysis room, with improvement in lighting, temperature, machine noise and chair discomfort 28 .…”