The number of QRSThe electrical representation of ventricular depolarization; the atrial repolarization is also a part of the QRS. ECG interpretation relies heavily on the QRS complex. The QRS complex represents the depolarization of the ventricles. The repolarization of the atria is also... complexes per minute; note that HR may not equal perfused pulse rateHeart rate is not always the same as pulse. Heart rate is a measurement of electrical activity while pulse ensures the perfusion of the blood to the target tissues. Many have been caught depending on the cardiac monitor for vital....
See also:
– Step 1 Heart RateThe number of QRS complexes per minute; note that heart rate may not equal perfused pulse rate. With ECG monitoring, changes in heart rate (HR) bear careful attention. This is the first step of the Six Second ECG 3-step method....
– RateHeart Rate; calculated by counting the number of QRS complexes in six seconds and multiplying by 10; rate is also determined by measuring the number of large squares between two R waves; i.e. –1 large square = heart rate of 300/minute.
– Rule of 300s (Triplicate Method)The Rule of 300s (also known as the triplicate method) is useful for measuring heart rate over shorter periods (less than 3 seconds) or for calculating heart rates of rapid tachycardias. This method is quick but not quite as accurate...
– Six Second CountPerhaps the simplest and most common method to determine heart rates involves multiplying the number of QRS complexes found over six seconds by a factor of 10 to get the number of QRS complexes in a minute (60 seconds). Figure...
– The Caliper MethodIf you did want an exact rate, you could count the number of millimeters across the R-R interval. This is often accomplished with the use of calipers. ECG paper records at a rate of 25mm/second which would total 1500 mm...
1. Six Second ECG GuidebookA Practice Guide to Basic and 12 Lead ECG Interpretation, written by Tracy Barill, 2012 Introduction The ability to correctly interpret an electrocardiogram (ECG), be it a simple six second strip or a 12 lead ECG, is a vital skill... (2012), T Barill, p. 30, 91, 106-107, 197