Electrocardiography and Exercise Stress Test

  • John R. Buscombe
  • Gopinath Gnanasegaran
  • Humayun Bashir


In patients with chest pain or suspected heart disease (IHD/CAD), the electrocardiogram (ECG) is one of the principle investigations at the time of presentation. The ECG is a graph obtained when the electrical potentials of an electrical field originating in the heart are recorded at the surface of the body [1–3]. Once the electrical activity is detected it is amplified, displayed on the screen/ monitor and finally recorded on a paper chart [1–3]. In general, the ECG records depolarisation (P wave and QRS complex) and repolarisation (ST segment, T wave and U wave) of the heart. The advantages of the ECG are (a) it is an independent marker of myocardial disease, and (b) it detect haemodynamic, anatomical, electrolyte and drug induced abnormalities [1–3]. Although the ECG is useful in the initial stages of chest pain investigation, it has severe limitations.


Ventricular Tachycardia Right Atrium Bruce Protocol Right Bundle Branch Block Junctional Rhythm 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • John R. Buscombe
    • 1
  • Gopinath Gnanasegaran
    • 2
  • Humayun Bashir
    • 2
  1. 1.Department of Nuclear MedicineRoyal Free HospitalLondonUK
  2. 2.Department of Nuclear MedicineGuy’s & St. Thomas’ Hospital NHS Foundation TrustLondonUK

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