20 May 2019 The ECG-T cardiac event monitor studies heart activity to clarify sporadic symptoms, such as: Palpitations: sensation of sporadic or successive heartbeats, missed beats or accelerations; Fainting: total or partial loss of consciousness, severe dizziness; Precordial pain: pain, weight or oppression in the chest. A cardiac event monitor conducts an electrocardiogram during symptomatic episodes and relates them to certain changes in heart function. A small monitor (ECG-T) attached to the chest wall with four electrodes constantly monitors the heart’s electrical activity for days or weeks. The device is activated by a button whenever the typical symptom occurs, so that electrical cardiac activity immediately before, during and after the symptom is recorded in the device. This article was written with the support of physicians and other clinical professionals from the Hospital da Luz network. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.