Holter Monitor:

A Holter monitor is a portable device used to continuously monitor and record a person’s heart rhythm (electrocardiogram or ECG) over an extended period, typically 24 to 48 hours or longer. It is named after Norman J. Holter, the inventor of the device.

The Holter monitor consists of a small, lightweight recorder that is attached to the patient’s chest using electrodes. These electrodes are connected to the monitor via wires, and they continuously record the electrical activity of the heart during the monitoring period. The monitor is typically worn on a belt or carried in a pocket or pouch.

The purpose of a Holter monitor is to capture and analyze the heart’s electrical activity during a person’s normal daily activities, which can provide valuable information about the presence of irregular heart rhythms (arrhythmias), symptoms such as palpitations or dizziness, and the effectiveness of cardiac medications or interventions.

During the monitoring period, the patient is required to keep a diary or log, noting any symptoms experienced, activities performed, or medications taken. This information is later correlated with the recorded ECG data for analysis.

After the monitoring period is complete, the recorded data is downloaded from the Holter monitor and analyzed by a healthcare professional, typically a cardiologist or trained technician. They review the ECG tracings to identify any abnormal heart rhythms, episodes of arrhythmia, or other significant findings. The results of the Holter monitor test can help in diagnosing various heart conditions, such as atrial fibrillation, bradycardia, tachycardia, or other rhythm disturbances.

The Holter monitor is a safe and non-invasive test, and it provides valuable information that can aid in the diagnosis, treatment, and management of heart-related conditions.

Event Monitor:

An event monitor is a portable device used to record your heart’s electrical activity when you have symptoms. It records the same information as an electrocardiogram (ECG), but for a longer time. Most of these event monitor devices can send the recorded information directly to your health provider.

 Like a Holter monitor, an event recorder also uses a recording device to monitor your heart, although it uses a smaller monitoring device. Unlike the Holter, it does not continuously monitor your heart over a 24-hour period. It doesn’t record until you feel symptoms and trigger the monitor.

You can carry or wear a cardiac event monitor up to 30 days. You carry the device in your hand, wear on your wrist, or keep it in your pocket.