有关医学的文章：Retrograde peristalsis.The manometry displayed in line mode as a conventional reveals what is commonly referred to as a double-peaked pressure wave at the recording site 30cm from the nares.The conventional wisdom is that this is a variation of normal esophageal motor function.The HRM color contour reveals that the double-peaked pressure wave is actually retrograde contraction.Tjis is not readily apparent on the conventional tracing because the sensors are to widely spaced to pick it up.
