For example, if there are 4 large squares between regular QRS complexes, the heart rate is 75 (300/4=75).When the rhythm is regular, the heart rate is 300 divided by the number of large squares between the QRS complexes.Heart rate can be easily calculated from the EKG strip:

The diagram below illustrates the configuration of EKG graph paper and where to measure the components of the EKG wave form.Voltage is measured along the vertical axis. Each larger square is 5 mm in length and represents 0.2 seconds.Each small square is 1 mm in length and represents 0.04 seconds.Heart rate and rhythm are usually analyzed with an EKG (ECG or ElectroCardioGram).Д®KG paper is a grid where time is measured along the horizontal axis. Take a look at this animation of your heartвЂ™s electrical system for a better understanding : A heartbeat that is too slow is called bradycardia. A heartbeat that is too fast is called tachycardia. Most arrhythmias are harmless, but some can be serious or even life threatening. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. Lack of blood flow can damage the brain, heart, and other organs. Problems with the heartвЂ™s electrical system, called arrhythmias, can make it hard for the heart to pump blood efficiently.

Heart beating to rhythm of wimoweh