Ecg Lab Report

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Human ECG

Abstract The purpose of these lab exercises is to understand the function and importance of an electrocardiogram. This lab will demonstrate how stress levels or different elevations can affect human heart rate. Furthermore, the equipment used in the experiment will show the functions in the right and left arm; as well as, in the right and left ankles. Finally, the lab will serve a purpose as a way to know how to read an electrocardiogram and calculate the heart rate.
Introduction
An electrocardiogram can be used to record activity during the cardiac process of pumping and returning blood to the body and heart because of the electric current that spreads through the tissue of the heart and to the surface of the body. By using four electrodes, one on your left and right wrist and one on the upper left and right foot. From that information a person is able to record the electrical potentials produced by the heart. Beginning of the lab involved a reading from the electrocardiogram and then calculating the heart rate by comparing the waves to what the electrocardiogram reading said. The electrocardiogram is divided into five main parts. The first small peak is the P wave; it represents atrial depolarization (Eric, 2011). Next is the QRS complex; the QRS consist of the Q, R and S. The complex will occur because of the electrical events produced as the ventricles depolarize (Eric, 2011). Lastly, there is the T wave; it represents the ventricular repolarization (Eric, 2011). The voltages recorded on an electrocardiogram can be compared to on table 28.1 in the Ninth Edition Seeley’s laboratory manual. In the lab experiment there will be a comparison of the bpm, PR interval, QRS complex and the QT interval. All in which you have an average that you can see if you are in the “normal” range of. If someone has a bpm above a hundred; it is called Tachycardia (Eric, 2011). If someone has a bpm below sixty; it is called Bradycardia (Eric, 2011). Following



Cited: Eric , Wise. "Electrical Conductivity of the Heart." 9. New York: McGraw-Hill, 2011. 376-377. Print. Goldenberg, L. (2006, ). Medscape Today . QT Interval: How to Measure It and What Is "Normal". Retrieved February 18, 2013, from http://www.medscape.com/viewarticle/525633

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