title: Airmed-cardio: a GSM and Internet services-based system for out-of-hospital follow-up of cardiac patients.
abstract: A platform built around three information entities (patient, health-care_agent, and central_station) was designed to enable patients with chronic heart disease (in stable condition; emergency situations were excluded deliberately) to complete specifically defined protocols for out-of-hospital follow-up and monitoring. The patients belonged to one of four specific risk groups: arterial hypertension, malignant arrhythmias, heart failure, and postinfarction rehabilitation. They were provided with portable recording equipment and a cellular phone that supported data transmission [electrocardiogram (ECG)] and wireless application protocol (WAP) (remaining parameters and ad hoc questionnaires). The central station was an automatized platform, with no human operator. The information received was organized chronologically in patient folders. The health-care_agents had continuous and secure access to the patient folders, through tools based on the world wide web and WAP, and to short messages sent by their patients. A pilot project was conducted with 89 patients (mean length of participation: 50.1 days). A total of 2168 ECGs (mean duration transmission = 2 min/30 s; network errors < 0.1%) and 4011 short messages (none lost, in 95% of cases 30 s < delay < 1 min) were transmitted; 6083 WAP sessions (mean duration = 3 min 11 s; network failures < 0.1%) were The functionality of the platform was also evaluated, analyzing the subjective component of usability, showing the evolution of patient acceptance over time.
authors.affiliation: Laboratory of Bioengineering and Telemedicine, Hospital Universitario Puerta de Hierro, Madrid 28035, Spain. chs@bioing.cph.es
authors.forename: Carlos H
authors.initials: CH
authors.lastname: Salvador
authors.forename: Mario
authors.initials: M
authors.lastname: Pascual Carrasco
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Gonzalez de Mingo
authors.forename: Adolfo
authors.initials: A
authors.lastname: Muñoz Carrero
authors.forename: Joaquin
authors.initials: J
authors.lastname: Márquez Montes
authors.forename: Luis
authors.initials: L
authors.lastname: Sosa Martín
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Cavero
authors.forename: Ignacio
authors.initials: I
authors.lastname: Fernández Lozano
authors.forename: José Luis
authors.initials: JL
authors.lastname: Monteagudo
mesh_terms: D040421:Cell Phone; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation / Q000379:methods*; D005240:Feasibility Studies; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D020407:Internet; D016347:Medical Records Systems, Computerized; D010865:Pilot Projects; D017216:Telemedicine / Q000295:instrumentation / Q000379:methods*; D014584:User-Computer Interface