C.Net5000 and Holter Monitors Compared
Ambulatory ECG monitoring of patients, usually for a 24-hour period, is generally accepted as a current standard protocol in secondary care for detecting infrequently-occurring rhythm disturbances of a patient’s heart during normal daily activity.
The Holter monitor, named after its inventor Dr Norman Holter, records the patient’s ECG onto cassette tape or, in modern devices, digital memory. Holter monitors are generally described as full-disclosure, which means that the ECG is recorded and stored for the full duration of the test.
At the end of a test, the ECG recording stored by the Holter monitor is loaded into a computer workstation for analysis by a cardiac technician. As this is a time consuming process, Holter monitors are generally only used where the number of tests being performed justifies the cost of a manned workstation.
In contrast, the Cardionetics C.Net5000 ambulatory ECG monitor uses advanced detection algorithms to automatically identify and record examples of any rhythm abnormalities while the monitor is being worn by the patient, which means that the results are immediately available at the end of a test, without the need for a cardiac technician and workstation to analyse the data.
Many Holter monitors are multi-channel, using five or more electrodes, which allows the electrical activity of the heart to be observed from several different directions. The Cardionetics C.Net5000 uses only three electrodes, which makes it easier to fit and more comfortable for the patient to wear. The electrode placement used by the C.Net5000 has been independently shown to have the highest sensitivity for arrhythmia detection.
Because of its ease of use and automatic analysis, the C.Net5000 makes it possible to undertake 24-hour ambulatory monitoring where a cardiac technician and workstation are not available, such as in general practice and walk-in clinics. The ability of the C.Net5000 to display the test results on the built-in LCD screen makes it suitable for stand-alone use in cardiac rehabilitation clinics or during home visits.