The number of steps involved in the detection of QRS complex is ______(a) One step(b) Two steps(c) Three steps(d) Four stepsThe question was posed to me in semester exam.My question is from Clinical Data Interchange/Exchange Standards topic in section Telemedicine Technology of Biomedical Instrumentation

The number of steps involved in the detection of QRS complex is ______

1.	The number of steps involved in the detection of QRS complex is ______(a) One step(b) Two steps(c) Three steps(d) Four stepsThe question was posed to me in semester exam.My question is from Clinical Data Interchange/Exchange Standards topic in section Telemedicine Technology of Biomedical Instrumentation
Answer» Right choice is (b) TWO steps Explanation: The ECG is first preprocessed to enhance the QRS complex while suppressing noise, artifact and non-QRS portions of the ECG. QRS detection is now almost UNIVERSALLY performed DIGITALLY in a two-step process. The output of the preprocessor stage is SUBJECTED to a decision RULE that confirms detection of QRS if the processor output exceeds a threshold.

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