TAILIEUCHUNG - Ebook Clinical examinations in cardiology: Part 2

(BQ) Part 2 book "Clinical examinations in cardiology" presents the following contents: Basic investigations - Clinical electrocardiogram, basic investigations - Radiology of the heart and great vessels. | BASIC INVESTIGATIONS 6A. CLINICAL ELECTROCARDIOGRAPHY 22. Introduction and basic concepts 459 23. The normal electrocardiogram 474 24. Abnormal P T and U waves 490 25. Ventricular hypertrophy 500 26. Intraventricular conduction defects 516 27. Myocardial infarction and ischemia 533 28. Pericarditis and myocarditis 560 29. Drug effects and electrolyte abnormalities 568 30. Arrhythmias 580 This page intentionally left blank Chapter 22 Introduction and Basic Concepts introduction basic concepts a Electrophysiology of the Heart b Electrocardiographic Instrument Recording Electrodes and Lead 459 c Precautions to be Taken for 461 Recording an ECG 461 references 466 472 473 introduction The electrocardiogram ECG is a graphic record of the electrical potentials produced during heart beat. ECG of today is the product of a series of technological and physiological advances occurred over the past two centuries. The existence of electricity in the animal animal electricity was first suggested by Edward Bancroft 1769 in torpedo fish 1 and substantiated by John Walsh 1773 in eel 2 and Luigi Galvani 1780 in dissected frog see Table . However it was in 1842 when Carlo Matteucci Professor of Physics at the University of Pisa first showed that an electric current accompanies each heart beat in a dissected frog 3 which was later confirmed by Rudolph von Koelliker and Heinrich Muller in First successful attempt to record an ECG in humans was made by Alexander Muirhead a Telegraph engineer in 1869 at St. Bartholomew s hospital London using Thomson Siphon recorder. Table History of development of ECG Discovery invention scientist 1. Animal electricity Bancroft 1769 Walsh 1773 and Galvani 1780 2. Electric current accompanies each Matteucci 1842 Koelliker and heart beat frog Muller 1856 3. Capillary electrometer Gabriel Lippmann 1872 4. String galvanometer Willem Einthoven 1901 5. Attempt to record ECG in humans Alexander Muirhead 1869 6. Recorded first human ECG Augustus

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• Clinical examinations in cardiology
• Basic investigations
• Clinical electrocardiogram
• Radiology of the heart
• Great vessels
• Cardiac calcification
• Basic anatomy and physiology
• Basic anatomy
• General physical examination
• Cardiovascular system examination
• Clinical procedures
• Medical assisting
• Clinical medical assisting
• Highly specialized examinations
• Allergy examinations
• Cardiology examination