Fainting, which results from a temporary loss of consciousness due to decreased blood flow to the brain, is a common finding in the general population. Many referrals for evaluation are made due to this reason. A significant part of investigating fainting events involves searching for possible rhythm disturbances that can cause loss of consciousness. It is crucial to identify these disturbances for proper treatment and prevention of further events. Previously, the investigation of rhythm disturbances relied on repeated ECGs and 24-hour Holter monitoring, but even with multiple Holter tests, there is a relatively small chance of detecting rhythm disturbances, especially those with very low frequency.
Therefore, in recent years, the primary method for investigating rhythm disturbances is based on the implantation of a subcutaneous monitor that continuously records heart rhythm 24/7 for up to three years. This monitor is capable of independently detecting rhythm disturbances. Additionally, there is increasing use of a home device that can "communicate" with the subcutaneous monitor. If a rhythm disturbance is detected, the device can transmit the information to the responsible pacemaker clinic to alert them of the recorded rhythm disturbance (which the patient may not have been aware of). Sometimes, the home device can also communicate with a 24/7 medical center, where a physician can immediately review the detected rhythm disturbance and decide if urgent treatment is necessary.
The subcutaneous monitor is about the size of a few centimeters (, and its implantation is a straightforward procedure that takes only a few minutes without complications. In addition to the monitor, there is a home monitoring device that is placed near the patient's bed and allows for connection to the monitor's data during the night.
