What can an ordinary ECG reveal?

Common ECG can detect whether the heart rate is normal, whether there is sexual conduction block, tachycardia, atrial premature beat, ventricular premature beat, myocardial ischemia, etc. It is recommended that if there is myocardial ischemia in patients, but also need to do 24 hours of dynamic ECG to check, which is more helpful for the diagnosis of disease.