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HSS Research Institute

Catheter Lateralization by Electrical Stimulation during Epidural Anesthesia

IRB Number: 11079
(inactive trial)

Institutional Review Board, Hospital for Special Surgery

August 22, 2011

The safety of study participants is our top priority. The trial is approved and periodically reviewed by an Institutional Review Board (IRB), which includes doctors, administrators, ethicists, and members of the general public. The safety of clinical trials is reviewed by the U.S. Food and Drug Administration.

Before enrolling in a clinical trial, the investigator will explain the purpose of the trial, its expected benefits, any possible risks or side effects, and what your role will be. This is the time to ask questions! If you want to join the trial, you must sign the informed consent documents. You can leave a clinical trial at any time without penalty.

For further information, see Understanding Clinical Trials.

Principal Investigator

Nigel E. Sharrock, MD


George Go, BS


Twenty patients will be enrolled to study whether an epidural catheter can be inserted into the epidural space on the side of surgery. A stimulating catheter will help in verifying the location or laterality of an epidural catheter. The duration of the study will be during catheter placement when anesthesia is being given before surgery.

Inclusion/Exclusion Criteria

Inclusion Criteria:

Patients ages from 18-90 years old having surgery under epidural anesthesia who have not had prior lumbar spine surgery.

Exclusion Criteria:

Patient’s age is less than 18 or greater than 90.
Patients who have had prior lumbar spine surgery.
Patients in whom an epidural catheter placement is contraindicated:
Anticoagulant therapy
Bleeding disorders, e.g., hemophilia
History of prior epidural infection

Contact Information

George Go, BS