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Ventricular Fibrillation is detected by _________

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Ventricular Fibrillation is detected by _________

(a) Shape of the QRS complexes

(b) Difference of the R-R interval

(c) Timing sequence of QRS complexes

(d) Frequency domain analysis

The question was asked in unit test.

The query is from Phonocardiography (PCG) in portion Biomedical Recorders of Biomedical Instrumentation

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The correct option is (d) Frequency domain analysis

The best I can explain: Ventricular fibrillation is usually detected by frequency domain analysis. The system is characterized as a narrow-band, low frequency signal with energy concentrated in a band around 5-6 Hz. It can be distinguished from noise by appropriately designing band-pass filters.

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