Winkler+ECG+Lab+Slides-1

Winkler+ECG+Lab+Slides-1 - Biomedical Signal Processing &...

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Biomedical Signal Processing & Electrocardiogram (ECG) TA: Jen Winkler
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Objectives Understand Heart Physiology and Measurement Techniques Analyze Signal Data - Calculate ECG waveform components - Interpret clinical relevance Design Data Acquisition System Using LabView - Apply LP, HP, and band-pass filters to ECG signals Acquire Data Using BIOPAC Einthoven Principle 1 2 3 4 5
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Origins of the ECG Signal Resting heart is Polarized Positive ions enter the cells as stimulus occurs (Depolarization) Depolarization causes muscle fiber to shorten causing muscle contraction Sinoatrial Node (SA) creates electrical impulse needed for heart contraction Impulse travels across Purkinje Fibers to stimulate ventricles Repolarization - Positive ions are evacuated (muscle relaxation) Contributions to ECG of each Specialized Cell within the heart
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Basic Measurement of ECG P wave: Sequential depolarization of right/left atria QRS complex: Right/left ventricular depolarization
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This document was uploaded on 02/09/2012.

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Winkler+ECG+Lab+Slides-1 - Biomedical Signal Processing &...

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