Informed Consent for Epidural Steroid Injection (ESI)

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Informed Consent for Epidural Steroid Injection (ESI)

Patient and Procedure Information

Nature and Purpose of the Procedure

An epidural steroid injection (ESI) delivers a mixture of a corticosteroid (anti-inflammatory medication) and a local anesthetic directly into the epidural space surrounding the spinal cord and nerve roots. The injection is performed under fluoroscopic (real-time X-ray) or CT guidance to ensure accurate needle placement. Three approaches may be used: interlaminar (needle placed through the ligamentum flavum in the midline), transforaminal (needle placed lateral to the facet joint near the nerve root exit), or caudal (injection through the sacral hiatus). The local anesthetic (lidocaine or bupivacaine) provides immediate short-term relief, while the corticosteroid takes effect over 3 to 7 days and aims to reduce inflammation around the affected nerve root(s). The procedure is indicated for radicular pain (sciatica) from lumbar disc herniation, spinal stenosis, or foraminal narrowing. It is not a curative treatment and does not address the underlying structural problem.

Material Risks and Potential Complications

Intravascular injection: inadvertent injection of steroid or local anesthetic into an epidural blood vessel, which may cause local anesthetic systemic toxicity (LAST) including seizure and cardiac arrhythmia. Risk is minimized by aspiration testing, contrast injection under fluoroscopy (digital subtraction angiography where indicated), and use of non-particulate steroids (dexamethasone) for transforaminal injections near the anterior spinal artery.
Dural puncture and post-dural puncture headache (PDPH): inadvertent puncture of the dura mater causes CSF leak and severe positional headache in approximately 1 to 2 percent of interlaminar injections. Managed with bed rest, hydration, caffeine, or an epidural blood patch procedure.
Infection: epidural abscess or discitis, a rare but serious complication that may cause severe spinal cord or nerve compression and paralysis. Strict aseptic technique and avoidance of injection in patients with active systemic infection minimize this risk.
Temporary neurological symptoms: transient numbness, weakness, or heaviness in the legs for 2 to 4 hours from the local anesthetic component. Patients must not drive following the procedure until these effects have fully resolved.
Systemic corticosteroid effects: temporary elevation of blood glucose in diabetic patients (lasting 24 to 72 hours), fluid retention, facial flushing, insomnia, and mood changes. Repeat injections may suppress the adrenal-pituitary axis.
Spinal cord or nerve injury: rare but serious direct mechanical trauma to the spinal cord or nerve root from the needle. Risk is substantially reduced with fluoroscopic guidance and real-time contrast imaging.
Radiation exposure: fluoroscopic guidance uses low-dose ionizing radiation. The procedure involves a very small and acceptable exposure relative to the clinical benefit of accurate needle placement.

Alternatives to Epidural Steroid Injection

Continued conservative management: NSAIDs, analgesics, physical therapy, activity modification, and time (most acute disc herniations improve without intervention within 6 to 12 weeks).
Oral corticosteroid taper (Medrol Dose Pack): systemic anti-inflammatory effect without the procedural risks; less targeted than epidural delivery; not appropriate for all patients due to systemic side effects.
Surgical decompression: for severe neurological deficit, progressive weakness, or failure of conservative and injection-based management. ESI may serve as a bridge to surgery or may provide sufficient relief to defer surgical intervention.

Expected Benefits and Duration of Relief

Epidural steroid injections provide meaningful pain relief in 50 to 70 percent of patients with radicular pain from disc herniation. Relief may last weeks to months and often enables patients to participate more effectively in physical therapy. ESI does not treat the underlying structural pathology. A maximum of 3 injections per 12-month period is generally recommended to limit cumulative steroid exposure. The procedure aims to provide sufficient pain relief to facilitate rehabilitation and improve quality of life while natural healing occurs or while the patient decides on further management.

Pre-Procedure Requirements

You must stop anticoagulant medications (warfarin, rivaroxaban, apixaban, dabigatran) and antiplatelet agents (clopidogrel) as instructed by your physician before the procedure. Aspirin alone may be continued in most cases. Blood thinners must be stopped to reduce the risk of epidural hematoma (blood clot), which is a rare but serious complication that can cause spinal cord compression and paralysis. You must arrange transportation home, as you will not be permitted to drive after the procedure.

Right to Refuse or Withdraw Consent

You have the right to refuse this procedure or withdraw your consent at any time before the injection is administered without penalty or adverse effect on your medical care.

Questions and Understanding Confirmation

I confirm that I have stopped anticoagulant medications as instructed. I understand that I must not drive after the procedure and that I have arranged alternative transportation. I have been advised that this procedure addresses symptoms and not the underlying pathology. All my questions have been answered to my satisfaction.

Language Access and Interpreter Services

If English is not your primary language or if you require assistance communicating, a qualified interpreter is available at no cost. Please notify your care team before signing this document.

Copy of Consent Acknowledgment

I acknowledge that I have been offered a signed copy of this informed consent form for my own records.

Patient Authorization

I have been informed of the epidural steroid injection procedure, the expected benefits and limitations of the treatment, the material risks listed above, and the available alternatives. I consent to proceed with the injection at the level and approach indicated above.

Signatures and Verification

Patient / LAR Signature
Physician Signature
Witness Signature
Date and Time
Document ID: CC-PENDING
CONSENTCOLLECT