Removal of a trapped epidural catheter via CT-guided positioning and posture optimization: A case report

Pain management during childbirth has long relied on a technique that delivers medicine directly into the space surrounding the spinal cord. This method, known as continuous epidural analgesia, is considered the gold standard for easing labor pain. A thin, flexible tube called a catheter is threaded into this space to allow doctors to pump medication as needed. While this procedure is routine and safe for the vast majority of patients, it carries a rare risk where the tube becomes stuck inside the body. When this happens, the tube can become tangled or wrapped around a small bone joint in the spine. If a doctor tries to pull it out without knowing exactly where it is trapped, the tube might stretch too far or snap, leaving a fragment behind and making the situation much harder to fix.

In a recent report from Jiangxi Maternal and Child Health Hospital, medical professionals describe how they solved this difficult problem for a young mother using a detailed internal map. The patient, a twenty-five-year-old woman giving birth for the first time, received an epidural for severe pain during labor. The procedure went smoothly, and she delivered her baby vaginally nine and a half hours later. However, when the medical team tried to remove the catheter after the birth, it would not come out. Over the next fifty-four hours, they tried every standard method to free it. They asked the patient to lie on her side, sit up, bend forward, and bend backward. They even tried gently massaging her back. Nothing worked. When they attempted to pull the tube while she was sitting, they could see the skin on her back stretch, and she felt a mild soreness in her lower right side, but the tube remained firmly stuck.

Because the team could not see inside the body to know if the tube was tied in a knot or simply coiled around a bone, they turned to a specialized imaging scan called computed tomography, or CT. This scan acts like a high-resolution photograph of the inside of the body, allowing doctors to see the exact path of the tube. The images revealed that the catheter was not knotted. Instead, it had wound itself into a tight spiral with two full turns around a small joint on the right side of her spine, specifically between the second and third lumbar vertebrae. The tube was caught in the narrow space of this joint, which is why it would not budge.

Armed with this clear picture, the team designed a specific position to free the tube without surgery. They asked the patient to sit up and lean her upper body to the left. This movement opened up the space on the right side of her spine where the tube was trapped. With the joint space widened by her posture, the doctors applied steady, gentle traction to the end of the tube. The entire catheter slid out intact, leaving no fragments behind. The patient was discharged on the same day and, a week later, had no pain, numbness, or weakness.

This case highlights a shift in how doctors handle these rare complications. Previously, when a tube could not be removed, the options were limited to waiting, trying different positions, or resorting to invasive surgery to cut the tube out. The authors of this report suggest that using a CT scan early, when simple methods fail, can prevent the tube from breaking and avoid the need for surgery. By seeing exactly how the tube is trapped, doctors can guide the patient into a position that naturally releases the hold, turning a potentially dangerous situation into a safe, non-surgical resolution. The report notes that while this approach requires access to advanced imaging, it offers a precise solution that protects the patient from further harm.