国际心血管杂志

Event recording is the most efficacious method of evaluating patients with suspected arrhythmias or follow-up of those under treatment. Many patients presenting with intermittent symptoms are can be difficult to diagnose leading to delays in appropriate treatment. Holter monitors limit the window of observation (typically 24-48 hours) and require some delay in obtaining the data once it is captured waiting for retrieval and processing. Event recorders provide a longer window of observation, typically in the United States up to 30 days of continuous monitoring as well as immediate availability of the data.
There are several types of event recorders:
Real time (post event)- record a preset length of ECG data from the time of activation forward.
Looping- continuously collect ECG data capturing a predefined length of ECG data pre/post activation
Looping Autotrigger- This looping ECG event recorder has a processor with algorithms evaluating the incoming ECG continuously for predefined arrhythmias – Bradycardia, tachycardia, and atrial fibrillation at any rate. The thresholds for rate are programmable. (This was introduced to the market by CG). The device can be manually activated by a symptomatic patient as well. Once the device is activated autotrigger or manually, the data is transmitted over the telephone manually by the user to a monitoring center for evaluation.
We studied the relative effectiveness of Holter monitors, loop and autotrigger event recorders.