rr is the meaning of respiratory rate on a cardiac monitor, which is the number of breaths a person takes per minute. The normal human respiratory rate is 12-20 times per minute. A low rr indicates that the patient’s respiratory rate has slowed down and respiratory depression has occurred. It is mostly seen in patients with elevated intracranial pressure due to brain lesions and in the state of anesthesia. Sleeping drug intoxication and hepatic coma can also result in reduced respiratory rate. There is nothing to worry about in people who are born with a low respiratory rate, but it is more dangerous when the patient has a definite decrease in respiratory rate and has symptoms of dizziness, chest tightness or even difficulty in breathing. This can lead to lack of oxygen and accumulation of carbon dioxide in the body, which can lead to respiratory acidosis. It is important to check the cause of the disease and give appropriate treatment to avoid acidosis and hypoxia.