Cardiovascular Medicine

Staff in the Heart Rhythm and Physiological Monitoring Laboratory at Mayo Clinic in Rochester, Minnesota, is active in all aspects of electrocardiography. The staff analyzes tests to evaluate and monitor your heart for irregular heart rhythm and rate, to identify a cause of your symptoms, to monitor the response to some treatments such as medicine or ablation, and for the evaluation of a wide range of heart conditions. People who might need heart monitoring may be having symptoms such as passing out or palpitations.

You might undergo tests such as:

• A standard 12-lead electrocardiogram (ECG or EKG).
• Signal-averaged ECG.
• Holter monitor, which might be worn for 24 or 48 hours.
• Event monitors, which detect unusual heart rhythms and can be worn for up to 30 days.
• Mobile cardiac recording devices.
• Mobile cardiac telemetry, which offers nonstop cardiac monitoring for up to 30 days.

The staff in the Heart Rhythm and Physiological Monitoring Laboratory also provides analysis service to several hospitals, clinics and corporate medical departments.

Nationally recognized expertise

Mayo Clinic is top-ranked in more specialties than any other hospital and has been recognized as an Honor Roll member according to the U.S. News & World Report's 2024-2025 "Best Hospitals" rankings.

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

• Mayo Clinic in Rochester, Minnesota, Mayo Clinic in Phoenix/Scottsdale, Arizona, and Mayo Clinic in Jacksonville, Florida, are ranked among the Best Hospitals for heart and heart surgery by U.S. News & World Report.
• Mayo Clinic Children's in Rochester is ranked the No. 1 hospital in Minnesota, and the five-state region of Iowa, Minnesota, North Dakota, South Dakota and Wisconsin, according to U.S. News & World Report's 2024–2025 "Best Children's Hospitals" rankings.