Who Needs a Holter Monitor Test?
Patients who routinely experience symptoms such as palpitations, chest tightness, shortness of breath, dizziness, tinnitus, or syncope should be suspected of having heart disease.

Patients with transient arrhythmias or myocardial ischemia not detected by standard electrocardiography (ECG); patients receiving medications for coronary artery disease or arrhythmias, for therapeutic efficacy assessment; and patients undergoing post-procedural monitoring following cardiac stent implantation, radiofrequency ablation, or pacemaker implantation.

Patients requiring preoperative cardiac evaluation and individuals at high risk for sudden cardiac death are all recommended to undergo ambulatory electrocardiographic (Holter) monitoring.