There are two main reasons for the poor rise of the R wave in the diagnosed ECG: 1. The patient is in a situation where he/she is overworked, mentally stressed and not relaxed, does not get enough sleep, has a one-time hypoglycemia, drinks too much alcohol, etc. The R wave of the ECG will rise poorly. Women who are pregnant will also have this condition. So, it is important to keep yourself in good condition before having an ECG. If these conditions lead to a poor rise in R wave, the patient should adjust the unhealthy life situation under the advice of the physician.2. Problems with the heart. For example, myocardial injury, ventricular hypertrophy, myocardial infarction, left ventricular injury and so on, there are some sequelae of the disease can also lead to the rise of the r wave in the ECG is not good, which needs to be combined with the clinical manifestations of the situation for treatment.