Heart rate 90. What does that mean?

Heart rate 90 + generally refers to a heart rate of more than 90 beats per minute, which is usually within the normal range and does not indicate anything.

Heart rate refers to the number of beats per minute of the heart, which is one of the basic vital signs of the human body and is used for cardiovascular system examination. Generally speaking, the heart rate measured by adults in a quiet state is usually 60-100 beats per minute, and more than 90 beats per minute are in the above range, indicating that no obvious abnormality is found, so the heart rate does not indicate anything. If the examination results show that the heart rate is lower than 60 beats/min, it belongs to bradycardia, which may be related to physiological factors such as age hyperplasia and long-term exercise, as well as pathological factors such as sinus node dysfunction and hypothyroidism; if the examination results show that the heart rate is higher than 100 beats/min, it indicates that the index is relatively high, which may be related to physiological factors such as strenuous exercise and emotional agitation or pathological factors such as arrhythmia, cardiomyopathy and hyperthyroidism.