Background: Transforaminal epidural steroid injections (TFESI) are widely used for the
conservative treatment of radicular pain. The use of dexamethasone in TFESIs is relatively new;
therefore, immediate and acute adverse effects that it may cause are not fully updated.
Objective: To evaluate immediate and acute adverse effects following TFESI with dexamethasone.
Study Design: Prospective, observational study.
Setting: A spine center affiliated with a rehabilitation hospital.
Methods: One hundred fifty consecutive patients receiving TFESI for the management of
radicular and axial spinal pain at the cervical, lumbar, and sacral levels with dexamethasone using
fluoroscopic guidance with digital subtraction technology were enrolled. The occurrence of adverse
effects in patients in the 2-week time period following interventions was monitored through a set
of questionnaires followed up by phone calls scheduled for 1 day, day 3, and day 14. Intensity and
duration of side effects were recorded.
Results: Of the 150 patients enrolled, 31 patients (19.5%) experienced adverse effects within the
first 30 minutes following the intervention. The most common adverse effects were numbness and
tingling in the limb, which developed in 19 patients (11.95%) followed by perineal pruritus that
occurred in 7 cases (4.4%). Patients also reported experiencing adverse effects within the 3 days
following intervention; most complained of headaches, insomnia, hiccups, flushing, and increased
radicular pain. No major complications were noted.
Limitations: The sample size enrolled might be too small to perceive possible rare side effects
related to the procedure. The 2-week follow-up period is a limitation for evaluating late side
effects.
Conclusions: This study offers provision to interventionalists that TFESI with dexamethasone
when performed by experienced hands and with proper technique has minor self-limited transient
adverse effects that can be easily managed. Patients should be made aware of these adverse
effects and their management. Further larger studies are needed to validate the safe use of
dexamethasone and the safety of transforaminal epidural injections.
Key words: Transforaminal epidural steroid injection, complications, dexamethasone