Ecg Recognition

Good Essays
ECG is a powerful tool in the diagnosis of heart disease. It is exciting to unlock the codes behind the squiggles and spikes and actually decipher a patient's heart patterns. However, I was having trouble identifying atrioventricular (AV) heart blocks. Therefore, I was extremely reassured by the first sentence of this article. Apparently, it is common to have difficulty decoding these rhythms, which gives me hope that with knowledge and practice, I will master them. Part of the difficulty in depicting AV blocks, is that they present in different ways for different degrees. Once again, in order to determine any irregularity, we need to study what is healthy, and find the discrepancies. Heart rhythms are measured in waves, complexes (spikes) and intervals (time lapses), which are assigned the letters P-T. P is a wave representing atrial depolarization, which causes the atria to contract, in response to electrical impulses sent from the
SA node. The PR interval shows the time from the start of atrial depolarization to the start of the ventricular depolarization which follows it, which comes after a slight delay in receiving the impulses through the AV node. The QRS complex represents ventricular depolarization, and is always followed by a T wave which indicates the relaxation of the ventricles, called repolarization, in order to build up energy to repeat the cycle. In a healthy ECG reading in lead II, the P wave is small, round, and positive. One will always appear just before each QRS complex. The PR interval should fall into a range of .12 to .20 second. The QRS complex should take .10 second or less, and be followed by a T wave. Of course, this is not the pattern that will occur when an AV block is present. In a first degree
AV block, the delay in the AV node will be longer than normal, marked by a longer PR interval.
Over .30 second is considered significant delay. First degree AV block is

You May Also Find These Documents Helpful

  • 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

    ECG scipaper

    • 1243 Words
    • 5 Pages

    THE ELECTRICAL ACTIVITY 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…

    • 1243 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Ecg - Electrocardiogram

    • 568 Words
    • 3 Pages

    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…

    • 568 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Abnormalities In ECG

    • 507 Words
    • 3 Pages

    Abnormalities in ECG Hypothesis If someone with a heart defect are monitored by an ECG machine, then the ECG will be abnormal when compared to the ECGs of healthy heats. Materials In order to test this experiment, an ECG machine will be necessary to measure the ECG of individuals with a heart defect and individuals with healthy hearts. It will also be necessary to have a program called Biopac to see the reading on a laptop. Additionally, volunteers with a healthy heart and heart defects will…

    • 507 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Ecg Basics

    • 1930 Words
    • 8 Pages

    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 mundane…

    • 1930 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    ECG MONITORING

    • 331 Words
    • 2 Pages

    Four-Channel Temperature Monitor & Controller Description: The project entitled “Four-Channel Temperature Monitor & Controller” brings out basic idea behind monitoring the various parameters using an Analog to Digital Converter. Normally in an Analog digital converter there are eight channels the A/D converter used here is 0809. In which the selection of these channels can be done using their address lines A0, A1, A3. Methodology: Any analog received from another external hardware can be…

    • 331 Words
    • 2 Pages
    Satisfactory 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
  • 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
  • Powerful Essays

    Origin of the ECG signal Shi Zhu Department of Computer and Electrical Engineering University of Ottawa Ottawa, Canada Szhu060@uottawa.ca Abstract—the technical report paper mainly introduces the concepts of heart and ECG signal and how the blood flow through the heart from the entrance of the heart to the entire body. Also, this paper describes some procedures of electrical activation of the heart and the genesis of the electrocardiogram like polarization and depolarization waves. That the point…

    • 3887 Words
    • 12 Pages
    Powerful Essays