Ambulatory blood pressure monitoring: recorders, applications and analyses
We have had considerable experience with ambulatory monitoring of blood pressure and heart rate over the past five years. We have used three different systems to monitor over 800 patients: the Del Mar Avionics Ambulatory Pressurometer II and ECG Recorder (P2), the Del Mar Avionics Ambulatory Pressurometer III (P3), and the Instruments for Cardiac Research system (ICR). We have found that all of these systems provide accurate readings on approximately 80% of the patients tested. The ICR unit has the advantage of being smaller, quieter, and cheaper than either the P2 or P3. The current major problem with all of the systems, however, is a breakdown rate of over 30%. We have also developed our own software to evaluate the 24 hour records and have taken a decidedly behavioral approach to analysis. Specifically we code each blood pressure determination for location, position, activity and mood. We have been able to link these pressures to both target organ damages and personality traits. Finally, we have begun to use the technique of ambulatory monitoring in the evaluation of patients with psychiatric disorders.
KeywordsDiastolic Pressure Panic Disorder Ambulatory Blood Pressure Monitoring Target Organ Damage Breakdown Rate
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