Epidural steroid injection-related events requiring hospitalisation or emergency room visits among 52,935 procedures performed at a single centre

Objectives: To analyse the incidence and type of epidural steroid injection (ESI)-related adverse events, including procedure-related complications and drug-related systemic effects requiring hospitalisation or emergency room (ER) visits. Methods: This study included 52,935 ESI procedures performed in 22,059 patients in our department from March 2004 to February 2016. Of these, we retrospectively reviewed the cases of 1570 patients (1713 procedures) who were hospitalised or visited the ER within 1 month after ESI. ESI-related events were classified as procedure-related complications, drug-related systemic effects, or of uncertain relationship. Descriptive data are provided; no statistical analysis was performed. Results: There were 244 ESI-related events in 235 patients (males:females = 102:133; mean age: 65.7 years; range: 20–93 years). The incidence of ESI-related events was 0.46% per procedure, including 14 procedure-related complications, 56 drug-related systemic effects, and 174 events of uncertain cause. Of the 52,935 patients, 6 (0.011%) experienced major complications (two spine haematomas and four infections), 1 patient died, and 1 experienced neurological sequelae. Conclusions: Although major procedure-related complications and drug-related systemic effects of ESI requiring hospitalisation are very rare, infection and haematoma can occur, resulting in serious outcomes. Hence, ESI should be carefully considered in high-risk patients. Key Points: • The incidence of ESI-related events requiring hospitalisation was 0.46%. • The incidence of procedure-related complications was 0.026%. • The incidence of drug-related systemic effects was 0.11%. • The incidence of major complication of ESI was 0.011%. • The major complications were spine infection, haematoma, and sepsis.