1, in normal sinus rhythm, sphygmomanometers measure heart rate with high accuracy, with the same frequency as brachial and radial artery beats.
2, the presence of arrhythmias such as atrial premature beats, ventricular premature beats, atrial fibrillation, etc., the accuracy of the sphygmomanometer heart rate is lower, because of changes in the heart's pumping ability to make the arterial wall fluctuations of the intensity of the difference.
3, daily use of sphygmomanometers to measure heart rate, compared with the value of each test for a comprehensive analysis can be.