Background: Numerous therapies have been developed for the treatment of chronic
pelvic pain (CPP). Oxygen-ozone therapy is a new method for the treatment of CPP.
Objectives: This article evaluated the feasibility of ultrasound-guided peritoneal perfusion
with ozone in patients with CPP.
Study Design: This is a bicenter retrospective study.
Setting: The study was conducted at 2 pain centers of a university hospital.
Methods: The medical records of patients with CPP (n = 60) from March 2016 until
October 2018 were collected and reviewed. Group A contained 19 patients who were
treated with a 1500 mcg dose of ozonated water (10 mcg/mL concentration and 150 mL
volume), group B contained 23 patients using the same dose of ozonated water but a 15
mcg/mL concentration and 100 mL volume. Group C included 18 patients using a similar
ozone dose but delivered in an oxygen-ozone mixture (15 mcg/mL concentration and 100
mL volume oxygen-ozone mixture). Visual Analog Scale (VAS) scores for pain of the 3 groups
were compared at pretreatment, posttreatment, 1, 3, and 6 months posttreatment. The
injection pain was evaluated using a 4-point verbal rating scale. Quality of life (QoL), anxiety,
and depression were assessed at pretreatment and at 6 months posttreatment.
Results: The VAS scores of the 3 groups decreased over time following treatment. Group
A showed much higher pain scores compared with groups B and C at 1, 3, and 6 months
posttreatment. However, the injection pain for groups B and C was higher than group A, but
there was no difference seen between group B and C. At 6 months posttreatment, the QoL
for all patients improved compared with pretreatment, whereas the anxiety and depression
did not demonstrate differences.
Limitations: The main limitations of this study are the retrospective study design, limited
case number, and short follow-up period.
Conclusions: Ultrasound-guided peritoneal perfusion with ozone is a feasible therapy for
patients with CPP.
Key words: Chronic pelvic pain, ozone, peritoneal perfusion