Respironics WristOx Operator's Manual page 42

Problem
No pulse display on
bargraph.
42
Possible Cause
Low patient pulse strength.
Sensor applied incorrectly.
Poorly perfused finger.
Finger positioned wrong.
Possible Solution
Reposition or replace finger; keep
sensor motionless.
Remove and re-connect sensor.
Refer to sensor instructions to apply
sensor correctly.
Reposition or replace finger; keep
sensor motionless.
Warm application site.
Reposition or replace finger; keep
sensor motionless.