Summary
Patient self-management (PSM), as the standard of care for vitamin K-antagonist therapy
management in Germany requires a detailed, point-of-care (POC) device-specific training
program to ensure quality patient care. In a multi-center trial using the ProTime
System (Training program plus POC device), 105 patients were enrolled to evaluate
efficacy of training, knowledge retention, patient satisfaction and quality of life
(QoL). Patients returned to the centers 1, 3 and 6 months after training to complete
questionnaires and demonstrate INR test proficiency. Training assessment employed
self-evaluation and comparison of POC results between PSM and professional operators.
Patient satisfaction and QoL were assessed using a modification of the questionnaire
described by Sawicki and the SF12v2 QoL Survey, respectively. Patients demonstrated
statistically significant improvements in knowledge post training (p<0.001) and retained
the acquired information (p=NS vs. post-training; N=45) after 6 months. Trained patients
yielded equivalent INR results to professional operators (r=0.92) with little or no
bias across all clinic visits. Compliance with weekly testing improved from 1 to 3
months (p = 0.03), remaining at the required weekly frequency through 6 months. Average
patient satisfaction improved significantly during the first month and remained constant
thereafter. There was a statistically significant improvement in the Physical Component
Summary of SF12 between baseline and 3/6 month assessments in all centers. In conclusion,
PSM requires a comprehensive system including appropriate disease and POC device training.
Such a system fosters compliance, improved knowledge about underlying disease, patient
satisfaction and QoL.
Footnote:
Portions of this trial were presented on November 15, 2005 at the American Heart Association
Scientific Sessions 2005 in Dallas, TX, USA.
Keywords
Oral anticoagulation - INR - self-management - quality of life