Browsing by Author "Hayn, D"
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- ItemAutomated and manufacturer independent assessment of the battery status of implanted cardiac pacemakers by electrocardiogram analysis.(2007-02-02) Schreier, G; Hayn, D; Kollmann, A; Scherr, D; Lercher, P; Rotman, B; Klein, WAccording to international standards cardiac pacemakers have to indicate the status of their batteries upon magnet application by specific stimulation patterns The purpose of this study has been to assess whether this concept can be used as a basis for automated and manufacturer independent examination of the depletion level of pacemakers in the framework of a collaborative telemedical pacemaker follow up system A prototype of such a system was developed and tested in a real clinical environment Electrocardiograms ECGs were recorded during magnet application and automatically processed to extract the specific stimulation patterns The results were used to assign each signal a corresponding pacemaker status ok replace or undefined based on the expected behavior of the devices as specified by the manufacturer The outcome of this procedure was compared to the result of an expert examination resulting in a positive predictive value of 100 for the detection of ECGs indicating pacemaker status ok The method can therefore be utilized to quickly safely and manufacturer neutrally classify cases into the categories ok and needs further checking which in a telemedical setting may be used to increase the efficiency of pacemaker follow up procedures in the future
- ItemInitial experiences with a telemedicine framework for remote pacemaker follow-up.(2007-10-23) Kollmann, A; Hayn, D; Garcia, J; Kastner, P; Rotman, B; Tscheliessnigg, K H; Schreier, GAccording to international guidelines implanted cardiac pacemakers PM have to be checked periodically to ensure that they are working correctly To spare a significant number of patients the burden of traveling to specialized PM clinics a telemedicine framework has been developed prototypically A mobile personal digital assistant PDA based PM follow up unit provides the caregiver at the point of care with the necessary infrastructure to perform a basic PM follow up examination remotely In case of detected malfunction of the PM the patient is ordered to the hospital for further examination The system has been evaluated in a clinical pilot trial on 44 patients with a total of 23 different PM models from 8 different manufacturers The initial results indicate the potential of the concept to work as an efficient manufacturer independent screening method with the ultimate goal to increase the safety quality and efficiency of PM therapy
- ItemMhealth Supporting Dynamic Medication Management during Home Monitoring of Heart Failure Patients.(2013-09-17) Modre-Osprian, R; Hayn, D; Kastner, P; Schreier, G
- ItemNear Field Communication-based telemonitoring with integrated ECG recordings.(2013-04-25) Morak, J; Kumpusch, H; Hayn, D; Leitner, M; Scherr, D; Fruhwald, F M; Schreier, GOBJECTIVES Telemonitoring of vital signs is an established option in treatment of patients with chronic heart failure CHF In order to allow for early detection of atrial fibrillation AF which is highly prevalent in the CHF population telemonitoring programs should include electrocardiogram ECG signals It was therefore the aim to extend our current home monitoring system based on mobile phones and Near Field Communication technology NFC to enable patients acquiring their ECG signals autonomously in an easy to use way METHODS We prototypically developed a sensing device for the concurrent acquisition of blood pressure and ECG signals The design of the device equipped with NFC technology and Bluetooth allowed for intuitive interaction with a mobile phone based patient terminal This ECG monitoring system was evaluated in the course of a clinical pilot trial to assess the system s technical feasibility usability and patient s adherence to twice daily usage RESULTS 21 patients 4f 54 14 years suffering from CHF were included in the study and were asked to transmit two ECG recordings per day via the telemonitoring system autonomously over a monitoring period of seven days One patient dropped out from the study 211 data sets were transmitted over a cumulative monitoring period of 140 days overall adherence rate 82 2 55 and 8 of the transmitted ECG signals were sufficient for ventricular and atrial rhythm assessment respectively CONCLUSIONS Although ECG signal quality has to be improved for better AF detection the developed communication design of joining Bluetooth and NFC technology in our telemonitoring system allows for ambulatory ECG acquisition with high adherence rates and system usability in heart failure patients