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Anorectal Manometry Nexam Pro User Manual 151
9.5.6 Squeeze Test
The squeezes should be marked with two squeeze markers. The first squeeze
marker should be placed at the onset of the squeeze. The second squeeze
marker should be placed at the end of the squeeze. Normally the markers are
already placed during the investigation. You can reposition the squeeze
markers, or insert new squeeze markers if squeezes are not marked during
the investigation.
Figure 9.26 Squeeze test
The letters between square brackets refer to the corresponding letters in the
above figure. During the squeeze test, the patient squeezes their 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.