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What is sensitivity of an electrocardiograph?(a) 10 mm/mV(b) 15 mm/mV(c) 20 mm/mV(d) 25 mm/mVI have been asked this question in an international level competition.The question is from System Concepts topic in chapter Patient Monitoring System of Biomedical Instrumentation

Answer»

Right answer is (a) 10 mm/mV

To explain: Electrocardiograms are ALMOST invariably RECORDED on graph paper with horizontal and vertical lines at 1 mm intervals with a THICKER line at 5 mm intervals. Time measurements and heart rate measurements are made HORIZONTALLY on the electrocardiogram. Amplitude measurements are made vertically in millivolts. The sensitivity of an ELECTROCARDIOGRAPH is typically set at 10 mm/mV.



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