LABORIE MMS Solar Blue User Manual page 131

Figure 9.26 Squeeze test
The letters between square brackets refer to the corresponding letters in
Figure 9.26. During the squeeze test, the patient squeezes his External Anal
Sphincter. The beginning and ending of the squeeze period are marked with
two squeeze markers [A] and [B], as shown in Figure 9.26. Squeeze markers
should always be set in pairs (it is a chained marker).
The squeeze results are displayed in three tables:
• Resting pressure
• Maximum squeeze pressure
• Relative squeeze pressure
Results for up to eight channels are displayed and averaged. In the result
selection, the user can select which of these tables should be included in the
results.
Using the squeeze markers, the following parameters are calculated:
Resting pressure
The resting pressure is the average pressure over a one-second period before
the squeeze begin marker [A].
Maximum squeeze pressure
The maximum squeeze pressure (i.e., the pressure increment during squeeze)
is calculated as the highest squeeze pressure (between marker [A] and [B])
minus the resting pressure.
Anorectal Manometry Solar Blue User Manual 131