50
100
150
200
250
300
350
400
Bone mets
No bone mets
20 40 60 80 100 120 140 160 180
Days
n=28
n=5
n=25
n=8
Fentanyl in µg/h
Opioïd consumption in oncological palliative patients
with or without bone metastases
Fen-Bel 5 study (Leuven patients = 53)
20 40 60 80 100 120 140 160 180
200