Editing Oesophageal motility disorders (section)

== High-resolution manometry ==

* 36 pressure sensors space at     1cm (instead of every 3-5cm in regular manometry)
* Colour pressure topography     plots (Clouse plots)
* Spans entire oesophagus
* Fast for 4 hours prior
* Integrated Relaxation     Pressure
** Lowest value over a 4-second      window post-swallow of relaxation pressure at LOS - gives good indication      of achalasia if it's high
* Distal Contractile Integral
** Measure of oesophageal      contractile vigour - area under curve, starting at proximal edge of      smooth muscle
** <450 is a weak swallow
** >8000 is spasm
* Contractile Front Velocity
** Measures rate of propagation      of oesophageal peristalsis
* Distal Latency
** Measure of time between      initiation of swallow and deceleration point - where there is      deceleration of peristalsis - this will be short if disordered
* Two bands at region of LOS =     probable hiatus hernia