The different units are detected in pressure plots where the levels of pressure reflects the anatomical units. Manometric values is specified in mmHg. For detection of passage of air and flow of liquid an impedance baseline is set before measurements start. Passage of air is defined as a sudden rise in impedance of 1 kΩ in anterograde direction. Detection of fluid is defined as a 50% decline in impedance. For analysis of data Mano View analysis software is used.