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What is the maximum amplitude of FECG recorded during pregnancy?(a) 100 to 300 mV(b) 300 to 500 mV(c) 500 to 700 mV(d) 700 to 900 mVThe question was asked in an interview for internship.My question is taken from Ambulatory Monitoring Instruments in division Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

Answer»

Right choice is (a) 100 to 300 MV

Easy EXPLANATION: Foetal electrocardiogram is recorded by suitably placing the electrodes on the mother’s abdomen and recording the combined maternal and foetal ECG. The MAXIMUM amplitude of FECG (R wave) recorded during pregnancy is about 100 to 300 mV. This magnitude is much smaller than in the typical adult ECG which is about 1 mV in the standard LEAD connection.



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