A pulse rate of 108 beats per minute is a rapid heart rate, and the patient needs an electrocardiogram. If the heart rhythm is sinus, it is sinus tachycardia. If sinus tachycardia occurs in the quiet state for a long time, it is recommended to identify the cause and if necessary, to treat it. It may be present in people with poor cardiopulmonary function. The main thing is to regulate emotions, not to overstress, and to choose to control the heart rate with transient applications of medications such as metoprolol. However, many people may have symptoms of heart failure, such as heart failure due to dilated cardiomyopathy or hypertrophic cardiomyopathy, etc. The main treatment is to address the cause. Other heart rates at 108 beats per minute may be caused by arrhythmias, such as atrial flutter, atrial fibrillation, and frequent premature beats, which are treated mainly for arrhythmias.