Ecg - Electrocardiogram

Good Essays
Introduction

An electrocardiogram, or ECG, is a graphical recording of the electrical events occurring within the heart. Because an ECG is a recording of the heart 's electrical events, it is valuable in diagnosing diseases or ailments that damage the conductive abilities of the heart muscle. When cardiac muscle cells are damaged or destroyed, they are no longer able to conduct the electrical impulses that flow through them. This causes the electrical signal to terminate at the damaged tissue or be directed away from the flow of the signal. The termination or redirection of the electrical signal will alter the manner in which the heart contracts. A cardiologist can look at a patient 's electrocardiogram and determine the presence of damaged cardiac muscle based on the time interval between electrical events.
Material and Methods

A computer system
Chart software version 5.0 or later
Power lab
Five lead shielded Bio camp & snap-connect Lead Wires
Three reusable clamp electrodes or disposable adhesive electrodes
Electrode cream
Ballpoint pen
Push button switch
Stethoscope

Step 1: Connecting the push button switch to the BNC socket for input 2
Step 2: Plug the Bio amp cable into the Bio amp socket
Step 3: Connect the leads to earth, CH1 negative and CH1 positive, on the Bio amp cable.
Step 4: Apply the cream to the subject then use the disposable adhesive electrodes for subject 's two wrist and left leg. (Following the Einthoven triangle)
Step 5: Subject needs to be relaxed before starting the reading of the EKG.
Results

Attached graph
Calculation of Heart Rate = 60 / (time interval)
For example: Heart Rate = 60 / 0.762 = 79bpm
Discussion

A typical ECG tracing consists of five identifiable deflections. Each deflection is noted by one of the letters P, Q, R, S, or T. The P wave is the first waveform in a tracing and represents the depolarization of the heart 's atria. The next waveform is a complex and consists of the Q, R,



References: Marieb, Elaine N. "Human Anatomy and Physiology – Laboratory Manual", 8th Ed. Pearson Benjamin Cummings. 2005, p333. Martini, Frederic H. "Fundamentals of Anatomy & Physiology", 6th Ed. Pearson Benjamin Cummings. 2004, p.701-703.

You May Also Find These Documents Helpful

  • Powerful Essays

    Electrocardiogram

    • 23581 Words
    • 95 Pages

    Contacts • Phone/E-Mail Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: Name: Ph: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: e-mail: ECG Notes Interpretation and Management Guide Purchase additional copies of this book at your health science bookstore or directly from F A. Davis by shopping . online at www.fadavis.com or by calling 800-323-3555 (US) or 800-665-1148 (CAN) A Davis’s…

    • 23581 Words
    • 95 Pages
    Powerful Essays
  • Good Essays

    ECG scipaper

    • 1243 Words
    • 5 Pages

    OF THE HEART USING ELECTROCARDIOGRAM Villar, Samantha Belle B. Ylade, Kristianne Joy G. Perillo, Jeanne 18 March 2014 ABSTRACT In this activity, the electrical activity of the heart was examined using the Electrocardiogram (ECG/EKG). Proper handling was performed by removing the metals present in the body and by cleaning the surfaces of the skin, to avoid the disruption of signal of the machine. Assessment of the condition of the heart were done with the use of electrocardiogram graph. The waves represented…

    • 1243 Words
    • 5 Pages
    Good Essays
  • Good Essays

    What is an electrocardiogram? An electrocardiogram (EKG or ECG) is a test that checks for problems with the electrical activity of your heart. An EKG translates the heart's electrical activity into line tracings on paper. The spikes and dips in the line tracings are called waves. What does an electrocardiogram do? An electrocardiogram (ECG) measures the heart’s electrical activity to help evaluate its function and identify any problems that might exist. The ECG can help determine the rate and regularity…

    • 471 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Ecg Denoising

    • 4538 Words
    • 19 Pages

    Kurtosis based Multichannel ECG Signal Denoising and Diagnostic Distortion Measures Sharma L. N. Department of Electronics and Communication Engineering Indian Institute of Technology Guwahati Guwahati, India - 781 039 Email: lns@iitg.ernet.in Dandapat S. Department of Electronics and Communication Engineering Indian Institute of Technology Guwahati Guwahati, India - 781 039 Email: samaren@iitg.ernet.in Mahanta A. Department of Electronics and Communication Engineering Indian Institute…

    • 4538 Words
    • 19 Pages
    Powerful Essays
  • Good Essays

    An ECG (electrocardiogram) is a tool used to evaluate the heart’s electrical activity which measures the current produced in the extracellular fluid. Action potentials that occur in the myocardial cells can be detected by electrodes or leads placed at key points on the skin’s surface (reference text book pg. 371) **add figure of a typical EKG trace** The ECG records 5 different waves that correspond with myocardial activity. The first wave is the P wave which occurs in response to atrial depolarization…

    • 474 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Ecg Basics

    • 1930 Words
    • 8 Pages

    Abstract Recording an electrocardiogram or ECG, is a procedure which is performed daily all over the United Kingdom by thousands of healthcare workers and in particular nurses (Jacobson, 2000). The way in which this procedure is performed varies from geographical location to location and occasionally even more so, between staff on the same ward (Amos, 2000). This reason stated by Amos (2000), formed the basis of my decision to choose this topic. The recording of an ECG is often seen as a fairly…

    • 1930 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Ecg Lab Report

    • 1674 Words
    • 7 Pages

    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…

    • 1674 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Ecg Research Paper

    • 4604 Words
    • 19 Pages

    Find out how electrocuting chickens (1775), getting laboratory assistants to put their hands in buckets of saline (1887), taking the ECG of a horses and then observing their open heart surgey (1912), induction of indiscriminate angina attacks (1931), and hypothermic dogs (1953) have helped to improve our understanding of the ECG as a clinical tool. And why is the ECG labelled PQRST (1895)?  1600  1646 Sir Thomas Browne, Physician, whilst writing to dispel popular ignorance in many matters…

    • 4604 Words
    • 19 Pages
    Good Essays
  • Good Essays

    every minute movement, questioning the purpose behind the machines rapidly being attached to my grandfather’s chest. While working on my grandfather, the doctor explained how the electrocardiogram worked he was planning on performing, showing me the rhythms of my grandfather’s heartbeat. I watched as the electrocardiogram traced each beat, following the line with my eyes, unable to tear myself away from the medicine as I felt an enigmatic connection to the hospital. Entranced by the slow, smooth beat…

    • 596 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Exercise Electrocardiogram Lab Purpose The purpose of this lab is to understand the concepts of an electrocardiogram of a normal person as well as understand what a normal ECG and an exercise ECG look like when performing a Bruce protocol treadmill test. Methods Materials- Test subject, ECG-12lead, 10 electrodes, treadmill The subject must have the electrodes properly connected before starting the treadmill test. Remove any hair from the subject before placing the electrodes on. The…

    • 905 Words
    • 4 Pages
    Powerful Essays