Caudal Epidural Injection

The caudal steroid injection process is a relatively simple outpatient procedure where a steroid-anesthetic medication is injected through the sacral region opening.

Preparing for a Caudal Epidural Steroid Injection

Patients are advised to eat only a light meal prior to the procedure, and should bring along a list of any current medications being taken. Those taking blood thinners will often be advised to temporarily discontinue using such prescriptions about two weeks prior to having a caudal steroid injection.

About the Caudal Steroid Injection Procedure

Before beginning the procedure a blood pressure cuff may be placed on the arm and a heart rate/oxygen monitor placed on the fingertip to track vital signs during the injection.

1. A nurse or physician will situate the patient either flat on their stomach with a pillow placed beneath the abdomen to elevate the sacral region of the lower spine. Some patients may be asked to lie on their side with their knees drawn in.
2. Once in position, the doctor will administer local anesthesia to the injection site, which is called the sacral hiatus located just above the opening at the base of the spine. This step helps numb the area to make the caudal steroid injection less painful for the patient.
3. After the region has become numb, the physician will carefully insert a needle through the sacral hiatus area and into caudal epidural space where the inflamed nerve roots are situated.
4. A contrast dye will be injected into the area, and the physician will utilize an x-ray device known as a fluoroscope to confirm that the needle placement is correct to address the affected area.
5. Once the fluoroscopy ensures proper needle placement, the steroid-anesthetic medication in injected into the site. The irritated nerve roots within the sacrum are coated with the solution to alleviate the pain. This part of the procedure typically takes around five minutes to complete.
6. After completing the procedure, the needle is removed and a bandage is applied to the insertion site. It is not advised to do any rigorous activities or drive for approximately 24 hours after a caudal steroid injection. However, normal activities may typically be resumed the next day.

Efficacy of Caudal Steroid Injections

Patients may experience relief within a half hour of the injection, but long-term relief is typically felt within 2-3 days after the procedure. Each caudal injection may last for several weeks to several months, and patients typically have varied results concerning the longevity of their pain relief. Physicians may recommend further treatments of this type in cases where the pain is chronic or recurrent.


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