This study is intended to compare the new Carnation patch monitoring system with the Zio patch, which represents the current standard for continuous recording of the ECG over extended periods.

The purpose of this research is to confirm the clinical value of a new P-wave sensitive recording vector combined with an easy-to-use long-term cardiac rhythm monitoring patch system, the CarnationTM Ambulatory Monitoring (CAM) System. The P-wave is a critical aspect of the electrocardiogram and a key finding for proper arrhythmia diagnosis. The CAM system is optimized for both ease of use and for maximum P-wave clarity for arrhythmia diagnosis.

Inclusion Criteria:

• Syncope of uncertain etiology or
• Pre-syncope of uncertain etiology or
• Palpitations of uncertain etiology or
• Management of known AF/SVT patients

Exclusion Criteria:

• Any dermatitis or infected skin over the sternum (Carnation patch) or left upper anterior thorax (Zio patch).
• A sternal or thoracic incision that extends under the patch within 3 months from the date of enrollment

Patients in Chicago, Charlotte, and Iowa under the care of a physician for symptoms listed in the inclusion criteria