Mayo Clinic's approach

At Mayo Clinic, electrophysiologists and rhythm analysis technicians use their expertise in electrocardiograms and other types of heart rhythm monitoring to provide exactly the care you need.

  • Individualized approach. Mayo Clinic specialists in the Heart Rhythm Clinic will talk with you about the types of heart rhythm monitoring available and which one meets your needs. They will develop an approach that fits with your life and condition.
  • Latest technology. Mayo Clinic has every type of heart-monitoring device available. Some of them use wireless technology, so your ECG test can be downloaded and interpreted immediately and in your medical record within minutes. In addition, Mayo Clinic helped develop and was among the first to use mobile cardiac outpatient telemetry. This method uses wireless ECG technology to continuously monitor your heart rhythm from your home.
  • ECG interpretation service. High-quality ECG interpretation has been offered at Mayo Clinic for nearly 50 years. Mayo Clinic's Heart Rhythm and Physiological Monitoring Laboratory in Rochester, Minneosta, offers interpretation of 12-lead ECG exams for adults, adolescents and children. ECG interpretations are available 24 hours a day, seven days a week. In urgent situations, ECG interpretations are available within minutes.
  • Research in diagnostic tests and treatments. Doctors in Mayo Clinic's Cardiovascular Research Center study and adopt new techniques for and uses of electrocardiography. They advance the standard of care for patients everywhere by sharing their knowledge and experience through journals, textbooks and seminars for other physicians.
Monitoring ECG readings Monitoring ECG readings

A nationally certified rhythm analysis technician at Mayo Clinic monitors and interprets ECG readings.

Expertise and rankings

Implantable loop recorder consultation Implantable loop recorder consultation

A heart rhythm specialist holds the tiny implantable part of a loop recorder as he explains the risks and benefits of this method of remote heart monitoring.

Heart rhythm disorders expertise

Mayo Clinic specialists in the Heart Rhythm Clinic are experts in diagnosing heart rhythm disorders with monitoring devices, such as Holter monitors and implantable loop recorders. Mayo Clinic performs many thousands of all types of heart rhythm monitoring each year. And it implants nearly 200 loop recorders yearly.

These tests are interpreted with a team-based approach by Mayo Clinic doctors trained in heart rhythm disorders (electrophysiologists) and nationally certified rhythm analysis technicians in the Heart Rhythm and Physiological Monitoring Laboratory at Mayo Clinic's campus in Rochester, Minnesota.

Mayo Clinic heart specialists write textbooks, such as Mayo Clinic Cardiology, and lead seminars for other physicians in the nuances of using electrocardiograms to diagnose complex heart rhythm disorders.

ECG research

Doctors at Mayo Clinic research innovative uses of ECG diagnostic techniques to benefit people with heart disease. Mayo Clinic performed its first ECG more than 100 years ago and has been studying and improving its use ever since.

Nationally recognized expertise

Mayo Clinic campuses are nationally recognized for expertise in cardiology and cardiovascular surgery:

  • Mayo Clinic in Rochester, Minn., is ranked among the Best Hospitals for heart and heart surgery by U.S. News & World Report.
  • Mayo Clinic Children's Center in Rochester, Minn., is ranked among the Best Children's Hospitals for heart and heart surgery by U.S. News & World Report.
  • Mayo Clinic in Phoenix/Scottsdale, Ariz., and Mayo Clinic in Jacksonville, Fla., are ranked among the Best Hospitals for heart and heart surgery by U.S. News & World Report.

Learn more about Mayo Clinic's cardiac surgery and cardiovascular diseases departments' expertise and rankings.

Locations, travel and lodging

Mayo Clinic has major campuses in Phoenix and Scottsdale, Arizona; Jacksonville, Florida; and Rochester, Minnesota. The Mayo Clinic Health System has dozens of locations in several states.

For more information on visiting Mayo Clinic, choose your location below:

Costs and insurance

Mayo Clinic works with hundreds of insurance companies and is an in-network provider for millions of people.

In most cases, Mayo Clinic doesn't require a physician referral. Some insurers require referrals, or may have additional requirements for certain medical care. All appointments are prioritized on the basis of medical need.

Learn more about appointments at Mayo Clinic.

Please contact your insurance company to verify medical coverage and to obtain any needed authorization prior to your visit. Often, your insurer's customer service number is printed on the back of your insurance card.

More information about billing and insurance:

Mayo Clinic in Arizona, Florida and Minnesota

Mayo Clinic Health System

Clinical trials

Explore Mayo Clinic studies testing new treatments, interventions and tests as a means to prevent, detect, treat or manage this disease.

Feb. 27, 2019
  1. Electrocardiogram. National Heart, Lung, and Blood Institute. Accessed Aug. 12, 2016.
  2. Stress testing. National Heart, Lung, and Blood Institute. Accessed Aug. 12, 2016.
  3. Goldman L, et al., eds. Electrocardiography. In: Goldman-Cecil Medicine. 25th ed. Philadelphia, Pa.: Saunders Elsevier; 2016. Accessed Aug. 12, 2016.
  4. AskMayoExpert. Ambulatory heart rhythm monitoring. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016.
  5. Barbara Woodward Lips Patient Education Center. Supraventricular tachycardia (SVT). Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2012.
  6. Chou R. Cardiac screening with electrocardiography, stress echocardiography, or myocardial perfusion imaging: Advice for high-value care from the American College of Physicians. Annals of Internal Medicine. 2015;162:438.
  7. Asirvatham SJ, et al. Electrocardiogram mapping-reentry: Final frontier? Circulation: Arrhythmia and Electrophysiology. 2014;7:760.
  8. Pfenninger JL, et al. Office electrocardiograms. In: Pfenninger and Fowler's Procedures for Primary Care. 3rd ed. Philadelphia, Pa.: Elsevier; 2011. Accessed Aug. 12, 2016.
  9. Chen YH, et al. Soft, comfortable polymer dry electrodes for high quality ECG and EEG recording. Sensors. 2014;14:23758. Accessed Aug. 12, 2016.
  10. Nestler DM, et al. Impact of prehospital electrocardiogram protocol and immediate catheterization team activation for patients with ST-elevation-myocardial infarction. Circulation Cardiovascular Quality outcomes. 2011;4:640.
  11. Gibbons RJ, et al. Use of echocardiography in Olmsted County Outpatients with chest pain and normal resting electrocardiograms seen at Mayo Clinic Rochester. Mayo Clinic Proceedings. 2015;90:1492.
  12. What causes an arrhythmia? National Heart, Lung, and Blood Institute. Accessed Oct. 7, 2016.
  13. Riggin EA. Allscripts EPSi. Mayo Clinic, Rochester, Minn. July 28, 2016.
  14. Riggin EA. Allscripts EPSi. Mayo Clinic, Rochester, Minn. Sept. 29, 2016.
  15. Murphy JG, et al., eds. Indications for invasive and noninvasive electrophysiologic testing. In: Mayo Clinic Cardiology: Concise Textbook. 4th ed. New York, N.Y.: Oxford University Press; 2013.
  16. Gerstenfeld EP, et al. Atrial fibrillation ablation: Indications, emerging techniques and follow-up. Progress in Cardiovascular Diseases. 2015;58:202.


Electrocardiogram (ECG or EKG)