Certified Rhythm Analysis Technician (CRAT) Practice Exam 2025 - Free CRAT Practice Questions and Study Guide.

The condition characterized by a heart rate typically exceeding 100 beats per minute and originating from the atria is atrial tachycardia. This arrhythmia occurs when the electrical signals in the atria become rapid, leading to an increased heart rate. It commonly manifests as a rapid, regular heartbeat due to the abnormal electrical activity primarily stemming from within the atrial tissue.

In contrast, bradycardia refers to a slower-than-normal heart rate, typically below 60 beats per minute, indicating a different condition. Ventricular tachycardia originates from the ventricles, not the atria, and usually involves a more serious and potentially life-threatening heart rhythm disturbance. Heart block, on the other hand, is a condition where the electrical signals are impaired as they pass from the atria to the ventricles, but it does not specifically manifest as a fast heart rate originating from the atria. These distinctions clarify why atrial tachycardia is the correct answer to the question about high heart rates stemming from the atrial region.