What sinus rhythm has a rate of more than 100 bpm?

The sinus rhythm characterized by a heart rate of more than 100 beats per minute is referred to as sinus tachycardia. This condition occurs when the sinoatrial (SA) node, which is responsible for initiating the heartbeat, generates electrical impulses at a faster rate than normal.

In a typical resting state, a normal heart rate ranges from 60 to 100 beats per minute, known as normal sinus rhythm (NSR). When the heart rate exceeds 100 bpm, it is classified as sinus tachycardia, indicating that the heart is beating faster due to various factors such as stress, exercise, fever, or underlying medical conditions. Understanding this distinction is crucial for monitor technicians, as they need to identify and interpret variations in heart rate to provide accurate assessments of a patient's cardiovascular health.