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In the ST segment measurement _________is either between the P and Q waves or in front of the P wave.(a) J point(b) Isoelectric baseline(c) ST measurement point(d) ST valueThis question was addressed to me by my school principal while I was bunking the class.This intriguing question comes from QRS Detection Techniques topic in division Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

Answer»

The correct CHOICE is (b) Isoelectric baseline

The explanation is: The current standard for DETERMINING the ST SEGMENT measurement is by measuring the voltage difference between the value at a POINT 60-80 ms after the J point and the isoelectric baseline. The isoelectric baseline is either between the P and Q waves (the P-R interval) or in front of the P-wave (the T-P interval).



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