FAST FOURIER TRANSFORM (FFT) BASED ELECTROGASTROGRAM (EGG) ANALYSIS UNDER WATER LOAD TEST (WLT)
Gokul M.*, Pradeep Murugesan and Harshavardhan M.
Electrogastrography is the procedure which is utilized to record the electrogastrograms (EGGs) through electrogastrograph Setup. Electrogastrograms are the graphical portrayal which mirrors the gastric pacemaker potentials or slow influxes of the stomach. It is a non-invasive, simple, independent and preliminary modality investigation for diagnosing gastric dysrhythmias. However, due to its sensitivity and non-invasive nature, there have also been discrepancies and controversies regarding the analysis and validation of EGGs. The motivation behind this paper is to introduce the physiological reason for electrogastrogram with a progression of pictures, representations, and acquisition of real EGGs and its examinations. Many EGG acquisitions have been recorded and concentrated in this analysis, which were recorded from different patients with unexplained queasiness or nausea under different controlled examinations like water load tests (WLT). This paper depicts the handy parts of how to record good quality EGGs and the strategies accessible for examining, evaluating, and deciphering the EGG acquisition. The acquired EGGs are analysed using Fast Fourier transform (FFT) where the power and intensities are calculated from the FFT spectrum for the detection of dysrhythmias.
Keywords: Electrogastrograhy, Gastric Dysrhythmias, Queasiness, Fast Fourier transform (FFT), Water load test (WLT).
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