Feature ArticleCardio SEM A Novel Approach for a Traffic Light System for Heart Failure Warning SignsAchury Saldaña, Diana Marcela MSc, RN; Rodríguez Parrado, Indira Yuselfy RN; González, Rafael A. PhD Author Information Author Affiliations: School of Nursing, Pontificia Universidad Javeriana (Ms Achury Saldaña); Clínica Palermo (Ms Parrado); and Engineering Faculty, Pontificia Universidad Javeriana (Dr González), Bogotá, Colombia. The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article. The project was funded by the 850-Call for the Strengthening of CTeI Projects in Medical and Health Sciences with Young Talent and Regional Impact. Pontificia Universidad Javeriana (project ID: 8940). Corresponding author: Diana Marcela Achury Saldaña, MSc, RN, School of Nursing, Pontificia Universidad Javeriana, Carrera 58 138-63, Bogotá, Colombia ([email protected]). CIN: Computers, Informatics, Nursing ():10.1097/CIN.0000000000000996, January 17, 2023. | DOI: 10.1097/CIN.0000000000000996 Buy PAP Metrics Abstract Existing literature on the follow-up of heart failure patients with warning signs shows that it is necessary to increase patients' knowledge and of seeking help in a timely manner. This suggests an opportunity to implement strategies that integrate technology to visualize the risk of decompensation. This article studies the acceptance of Cardio Sem, a traffic light system mobile application for patients with heart failure. A descriptive, observational pilot study was performed with 23 outpatients belonging to a heart failure program. For 4 weeks, patients used Cardio Sem, which allows visualizing the risk of decompensation through a series of questions that patients must answer daily and provides guidance for managing signs and symptoms of decompensation. A technology acceptance questionnaire was applied to all patients, resulting in acceptance of the application, especially in the dimensions that emphasized perceived usefulness (100%), social influence (100%), and behavioral intent (99.8%). Cardio Sem is useful for early detection of symptoms that allow for early response to complications. Acceptance of the application by patients and its ease of use present the possibility to implement it as a complementary tool to promote self-care and effective management of symptoms. Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.