Drawbacks of Other Diagnostic Approaches
Delays in arrhythmia diagnoses and treatment often result in increased morbidity, mortality, and catastrophic medical expenses. But physicians face considerable challenges in diagnosing arrhythmias. Arrhythmic events may occur infrequently and briefly -- in some instances for less than one minute once or twice per week. In many cases, patients are unaware of arrhythmic events when they occur.
Current monitors have shortcomings:
- Holter monitors are used for 24 to 48 hours and can only detect an arrhythmia if an event occurs in that time frame; electrocardiogram (ECG) analysis is done retrospectively.
- Event monitors have limited memory, and usually require the patient to sense and record the event, and then transmit the data.
- Implanted monitors require a costly, invasive procedure, and an office visit to analyze ECG data.
- In-hospital patient cardiac telemetry is costly to employ, and does not record patients during normal daily activity.