An electrocardiogram, also known as an ECG or EKG, can be used to measure these electrical changes occurring in the heart that creates the P, QRS, and T waves at the skin level (NIH 2016). The P wave represents atrial depolarization where the SA node fires a signal that travels to the atrium and converges at the AV node. The QRS wave shows ventricular depolarization, and the T, ventricular repolarization. The QRS is the largest wave seen on the ECG because the ventricles make up the most mass of the heart. The pulse wave can be recorded using a pulse plehtysmograph placed on a subject’s finger along with the leads attached on the right ankle, right wrist, and left wrist. One way that a person’s heart rate can be affected is through placing a cold ice pack along their forearm and recording the heart rate once the pack has
An electrocardiogram, also known as an ECG or EKG, can be used to measure these electrical changes occurring in the heart that creates the P, QRS, and T waves at the skin level (NIH 2016). The P wave represents atrial depolarization where the SA node fires a signal that travels to the atrium and converges at the AV node. The QRS wave shows ventricular depolarization, and the T, ventricular repolarization. The QRS is the largest wave seen on the ECG because the ventricles make up the most mass of the heart. The pulse wave can be recorded using a pulse plehtysmograph placed on a subject’s finger along with the leads attached on the right ankle, right wrist, and left wrist. One way that a person’s heart rate can be affected is through placing a cold ice pack along their forearm and recording the heart rate once the pack has