ECG recording and ECG leads

(BQ) Part 1 of the document ECG from basics to essentials - Step by step presents the following contents: Anatomy and basic physiology, ECG recording and ECG leads, the normal ECG and the frontal plane QRS axis, the components of the ECG waves and intervals, P waves and atrial abnormalities, chamber enlargement and hypertrophy, intraventricular conduction defects,... and other contents.

196p thangnamvoiva3 28-06-2016 52 3   Download

(BQ) Part 1 of the document ECG workbook presents the following contents: Recording a readable electrocardiogram (ECG), the electrical conducting system of the heart, a systematic approach to rhythm strip analysis, heart blocks, common arrhythmias, ectopics and extrasystoles, the 12 lead ECG.

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Electrocardiograms (ECGs) are the graphic representation of body surface potential differences generated by the electrical activity of the heart. Bipolar limb leads, augmentedunipolar limb leads and precordial leads have been used routinely for recording the ECG, which remains an essential part of the cardiac examination, even after the advent of cardiac catheterization, angiocardiography, echocardiography and many other sophisticated diagnostic modalities.

100p 951864273 10-05-2012 50 13   Download

The electrocardiogram (ECG), introduced into clinical practice more than 100 years ago by Einthoven, constitutes a lineal recording of the heart’s electrical activity that occurs successively over time. An atrial depolarisation wave (P wave), a ventricular depolarisation wave (QRS complex) and a ventricular repolarisation wave (T wave) are successively recorded for each cardiac cycle (Figures 1A–C). As these different waves are recorded from different sites (leads) the morphology varies (Figure 2).Nevertheless, the sequence is always P–QRS–T.

180p ozon_ozon 02-05-2012 96 14   Download