By Gari D. Clifford
The electrocardigram (ECG) is a recording of undefined task of the center that's used to diagnose middle problems. In contemporary years, new state of the art techniques to ECG research have emerged that at the moment are of vital curiosity to biomedical and electric engineers, as good as healthcare pros. This useful e-book is the 1st one-stop source to provide an intensive, updated remedy of the concepts and tools utilized in ECG info research, from primary ideas to the most up-to-date instruments within the box. The ebook locations emphasis at the choice, modeling, type, and interpretation of information in accordance with complex sign processing and synthetic intelligence strategies. execs locate counsel on designing, enforcing, and comparing software program structures used for the research of ECG and similar information. additionally, this accomplished source bargains a great grounding within the correct fundamentals of body structure, facts acquisition and database layout, and addresses the sensible problems with enhancing current info research tools and constructing new functions.
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Extra resources for Advanced Methods And Tools for ECG Data Analysis
The terminology in this section refers to the clinical lead configuration descriptions given in Chapter 1. In addition to determining the type of electrodes, one must consider the quantity of electrodes to be used. In diagnostic quality ECG, for example, 12 leads of ECG are acquired simultaneously. Each lead represents a different electrical axis onto which the electrical activity of the heart is projected. One may consider each lead to represent a different spatial perspective of the heart’s electrical activity (if we ignore the dispersive effects of the torso upon the signal).
Apart from obvious confounding factors such as age, gender, and medication, variables such as lead configuration and patient activity are also considered. Errors may creep into an analysis at any and every stage. Therefore, it is important to carefully design not only the hardware acquisition system, but also the transmission, storage, and processing libraries to be used. Although issues such as hardware specification, and relevant data formats are discussed, this chapter is not intended as a definitive or thorough exploration of these fields.
4. Examine the ST-T segments. Are there abnormalities (such as elevation or depression; see Chapter 10)? Is the abnormality suggestive of ischemia, infarction, or hypothermia? 21. The basic lead groups are: the inferior leads (II, III, and aVF), the anterior leads (V2, V3, and V4), the lateral precordial leads (V4, V5, and V6), and the high lateral leads (I and aVL). P1: Shashi August 24, 2006 11:34 Chan-Horizon 24 Azuaje˙Book The Physiological Basis of the Electrocardiogram 5. Examine the T waves.