LABORIE MMS Solar Blue User Manual page 127

Figure 9.22 Anorectal channel definition
When using spiral catheters with one centimeter (or 0.5 cm) spacing between
the pressure channels, you must define the sensor positions as well as the
channels that will be analyzed, as shown in Figure 9.22.
▪ The RAIR test can inform you which channel measured is at the IAS
(Internal Anal Sphincter). A drop of pressure after inflating the balloon
indicates the internal sphincter. In the window, channel P3 is defined as
IAS. This implies that for the RAIR test, only channel P3 is analyzed, as
shown in Figure 9.23.
Figure 9.23 RAIR test
The squeeze test can inform you which channel is at the EAS (External Anal
Sphincter). The strongest pressure increase indicates the external sphincter.
In this window, channel P2 is defined as EAS.
▪ The tip is positioned in the rectum (in the figure above: channel 4).
▪ After setting the channel definition, you must check the position of all the
markers.
Anorectal Manometry Solar Blue User Manual 127