Subarachnoid lumbar drains: A case series of fractured catheters and a near miss

Percutaneous Fluoroscopy-guided Retrieval of a Fractured Pelvic Drain after Caesarean Section: A Case Report

Iatrogenic retention of surgical drains following drain entrapment and breakage is a never event and a preventable complication. The traditional approach for removing a fractured drain from the intra-peritoneal cavity involves exploratory laparotomy. However, over the last few decades, minimal access surgery has been a more popular retrieval method for retained surgical items from peritoneal and extraperitoneal cavities. We report a case of a 32-year-old woman with a fractured pelvic drain post-caesarean section. Postoperatively, the patient developed the signs of infection and features of bowel obstruction. The mechanical obstruction was ruled out by computed tomography scan. Multiple attempts were made to pull the pelvic drain out but the tube snapped, leaving about a quarter of its length. The drain remnant was retrieved using a non-invasive, inexpensive interventional radiology technique. We could not find any such report in the literature describing this innovative approach for retrieving a fractured pelvic drain.

Keywords

case report; drain fragment retrieval; fractured pelvic drain; pelvic drain remnant.

The Evolution and Future of Spinal Drain for Thoracic Aortic Aneurysm Repair: A Review

For decades, spinal drains for cerebrospinal fluid (CSF) pressure monitoring and drainage have been used as adjuncts to protect against spinal cord injury resulting from thoracic aortic aneurysm repair. There are many different approaches to placement and management of CSF drains, with no true consensus on best practice. Furthermore, the incidence of complications resulting from spinal drains largely has been stagnant. This review describes the history and rationale behind placement of CSF drains, explore various considerations, techniques, and equipment, and discuss potential considerations for developing more comprehensive protocols.

Lumbar drains: Practical understanding and application for the otolaryngologist

INTRODUCTION

Lumbar drains are frequently used in patients with otolaryngologic concerns. These can be used therapeutically or prophylactically with the primary purpose being to modulate CSF pressure. Within otolaryngology, lumbar drains are most frequently used for cerebrospinal fluid leaks - either due to cerebrospinal fluid fistulas or in skull base surgery as these allow for potential healing of the defect. While not typically placed by otolaryngologists, a basic understanding of lumbar drains is beneficial in the context of patient management.

MANAGEMENT

A lumbar drain is inserted into the intrathecal space in a patient's lumbar spine. Though considered to be a benign procedure, complications are relatively frequent, and adjustment or replacement of the drain may be required. Complications include infection, epidural bleeding, retained hardware, sequelae of relative immobility, or may relate to over-drainage, ranging from mild headache to cranial neuropathies, altered mental status, pneumocephalus, intracranial hemorrhage, and death. While in place, neurologic exams should be performed routinely and should include motor and sensory exams of the lower extremities. A patient should be monitored for fevers, nuchal rigidity, and other signs of infection or meningitis. The CSF fluid should be grossly examined to identify changes, but routine laboratory tests are not typically run on the fluid itself. Drainage rates will vary usually between 5 and 20 mL per hour and must be frequently reassessed and adjusted based upon signs of intracranial hypotension. Drains should be removed when appropriate and should not be left in more than 5 days due to the increased infectious risk.

CONCLUSION

Lumbar drains are important tools used in patients with otolaryngologic pathologies. Otolaryngologists and otolaryngology residents should be familiar with these catheters to determine if they are working correctly and to identify adverse effects as early as possible.

Percutaneous Fenestration of a Spinal Arachnoid Web Using an Intrathecal Catheter: Effect on Cerebrospinal Fluid Flow and Clinical Status

Background

Spinal arachnoid webs are a rare anatomic entity manifesting as neuropathic back pain, compressive myelopathy, radiculopathy, and hydrocephalus. Typical treatments include hemilaminectomy or full laminectomy with durotomy and microsurgical resection, which can result in secondary scarring and recurrent blockage of cerebrospinal fluid (CSF) flow perpetuating the cycle.

Case Description

A 66-year-old woman presented with progressively worsening gait and memory. Magnetic resonance imaging demonstrated an arachnoid web in the high thoracic region, causing CSF flow obstruction and hydrocephalus. A standard lumbar drainage catheter was introduced percutaneously into the lumbar thecal sac and advanced in a cephalad direction, across the arachnoid web, to the high thoracic region. The patient underwent continuous CSF drainage through this catheter for a total of 3 days, displaying measurable clinical improvement that persisted at the 3-month follow-up visit. Phase-contrast magnetic resonance imaging demonstrated interval reconstitution of dorsal synchronous CSF flow at the second thoracic vertebral level, both on day 3 and at the 3-month control imaging study.

Conclusions

This minimally invasive approach seems useful in achieving restoration of spinal fluid flow at the thoracic region when the underlying blockage results from an arachnoid web and leads to quantifiable clinical improvement.

Spinal cord protection in aortic endovascular surgery

A persistent neurological deficit, such as paraplegia or paraparesis, secondary to spinal cord injury remains one of the most feared complications of surgery on the descending thoracic or abdominal aorta. This is despite sophisticated advances in imaging and the use of less invasive endovascular procedures. Extensive fenestrated endovascular aortic graft prostheses still carry a risk of spinal cord injury of up to 10%; thus, this risk should be identified and strategies implemented to protect the spinal cord and maintain perfusion. The patients at highest risk are those undergoing extensive thoracic aortic stenting including thoracic, abdominal, and pelvic vessels. Although many techniques are available, lumbar cerebrospinal fluid drainage remains the most frequent intervention, along with maintenance of perfusion pressure and possibly staged procedures to allow collateral vessel stabilization. Many questions remain regarding other technical aspects, spinal cord monitoring and cooling, pharmacological protection, and the optimal duration of interventions into the postoperative period.

Minimally invasive repair of a pseudomeningocele caused by a sheared intrathecal catheter following implantation of a drug delivery system

Background:

Shearing of an intrathecal catheter during implantation of a drug delivery system is an underreported complication that can be challenging to manage.

Case Description:

A 53-year-old man with refractory cancer pain had an intrathecal pump system implanted. The procedure was complicated with catheter shear and retention in the intrathecal space. A second catheter was successfully placed but formation of a painful pseudomeningocele and ineffective pain relief complicated the outcome. A minimally invasive approach through a tubular retractor was employed to access the spinal canal via a laminotomy, the sheared catheter was removed and the dural defect repaired. Complete resolution of the pseudomeningocele and efficient pain control were observed at follow-up.

Conclusion:

Minimally invasive approach to the spine is demonstrated as a safe and effective alternative in this case of retained catheter induced cerebrospinal fluid (CSF) leak.

Plain radiography in patients treated with intrathecal drug delivery using an implantable pump device

OBJECTIVES

Intrathecal drug administration using an implanted pump system is well established in intractable spasticity and pain. However, despite continuous advancements in manufacturing technology, adverse events related to the pump and catheter still occur. Most of them, such as migration, damage, disconnection and occlusion, are related to the spinal catheter. The aim of this overview is to update radiologists on how plain radiography of the implanted delivery system for intrathecal drug administration should be interpreted and to increase awareness for the need of urgent and timely multidisciplinary troubleshooting.

METHODS

Plain radiographic images of patients treated with intrathecal drug administration using an implantable drug delivery system were analysed in a multidisciplinary setting at our (university) referral centre for complications in intrathecal drug administration.

RESULTS

Examples of catheter-related adverse events are described and a proposal is made for stepwise interpretation of standard plain radiographic images.

CONCLUSIONS

Plain radiological images are the mainstay for the diagnosis of catheter-related adverse events in intrathecal drug delivery. Radiologists play an important role in an early diagnosis. An awareness of abnormal radiological findings seems important to avoid a life-threatening withdrawal syndrome.

TEACHING POINTS

• Untimely cessation of intrathecal drug delivery can lead to a life-threatening withdrawal syndrome. • Initially mild symptoms can lead to an exacerbation of a withdrawal syndrome. • Most intrathecal catheter-related problems are visible on plain radiography. • Common causes of catheter problems are migration, lacerations, occlusion and disconnection. • Knowledge on implanted intrathecal catheters is crucial for interpretation of plain radiography.

Physical characteristics of catheters used for subarachnoid drainage

Background

Cerebrospinal fluid diversion through lumbar drainage catheters is a routine procedure that is used in a variety of clinical applications. Fracture of catheters during insertion or removal may result in retained foreign bodies that may lead to patient morbidity with potential legal ramifications. Fracture resistance is an important component of drain selection.

Objective

To analyze catheter integrity to determine which commercially available catheters are most robust and resistant to fracture.

Methods

Physical properties of the commercially available drainage catheters that can be advanced through a Touhy needle were assessed using laboratory equipment and reported. Five types of catheter were analyzed for break load, tensile strength, extension at break, and shear strength.

Results and conclusions

Of the five types of catheter, the Arrow catheter showed the greatest resistance to fracture. Of the drainage catheters, the Codman catheter showed the greatest resistance to fracture.

Percutaneous retrieval of an intrathecal foreign body: technical note

A 58-year-old man had an intrathecal baclofen pump implanted. A guidewire used during removal of a previously placed lumbar drain catheter fractured, and a fragment was left within the thecal sac. Using fluoroscopic guidance, a loop snare device was used to retrieve the intrathecal foreign body successfully and without complication. The pump was placed without any difficulty, and the patient's hospital course was uneventful.

Effectiveness of lumbar drain versus hyperventilation to facilitate transsphenoidal pituitary (suprasellar) adenoma resection

BACKGROUND

Developing controlled hypercarbia is a known scheme of lowering the suprasellar part of the adenoma in order to assist the surgeon, which acts through raising the ICP and therefore the CSF pressure.

OBJECTIVES

The purpose of this study is to compare the effect of introducing a lumbar drain with that of controlled hypercapnia on the quality of transsphenoidal pituitary tumor resection and CSF leak.

PATIENTS AND METHODS

Fifty two patients with pituitary adenoma who underwent transsphenoidal hypophysectomy by the same surgeon were included. They were randomly divided into two groups. A lumbar drain catheter introduced into the L3-L4 subarachnoid space under local anesthesia in all patients. The same anesthesia was performed in both groups. In the study group, we used a saline injection into the subarachnoid space versus hypoventilation in the control group in order to increase the ICP according to the surgeon's request. The surgeon's satisfaction during the tumor resection and the resection time were assessed during the surgery. The CSF catheter was closed and sent with the patient for CSF drainage. If there was no CSF leak, the catheter removed 24 hours later. With evidence of a CSF leak, we used the catheter as a lumbar drain. The time taken for the leakage control was assessed.

RESULTS

The satisfaction came from 21 (87.5%) and 2 (9.1%) for surgeon in the first and the second group respectively (P = 0.0001). CSF leakage time in the first and the second group was 1.6 ± 0.24 and 5 ± 0.50 respectively. It revealed a significant difference between the two groups (P = 0.001). The mean resection time was 13.54 ± 0.66 minutes in the study group; and 30.91 ± 0.98 minutes in the control group.

CONCLUSIONS

In summary, the method described here for ICP manipulation is an effective procedure for a better visualization of the pituitary tumor during transphenoidal resection by surgeon and beneficial in managing the CSF leak following surgery.

An intrathecally located broken catheter used for an intrathecal drug delivery system

The intrathecal drug delivery system (ITDDS), an effective treatment tool for intractable spasticity and pain, is associated with various complications but breakage of the catheter is rare. We report the case of a 50-yr-old man with ITDDS, in whom an intrathecal catheter was severed, resulting in a 28.6-cm-long intrathecal fragment. The catheter completely retracted into the intrathecal space from the anchor site. The catheter was severed during spine flexion, and the total distal fragment was repositioned in the intrathecal space. Although the outcome of ITDDS was associated with the length or diameter of the broken catheter, no neurologic complications occurred in our patient. Thus, we inserted another catheter instead of removing the old one. Thereafter, the patient has been regularly followed up, and no neurologic complications have developed during the 28 months.

Subarachnoid hemorrhage due to retained lumbar drain

Intrathecal spinal catheters (lumbar drains) are indicated for several medical and surgical conditions. In neurosurgical procedures, they are used to reduce intracranial and intrathecal pressures by diverting CSF. They have also been placed for therapeutic access to administer drugs, and more recently, vascular surgeons have used them to improve spinal cord perfusion during the treatment of thoracic aortic aneurysms. Insertion of these lumbar drains is not without attendant complications. One complication is the shearing of the distal end of the catheter with a resultant retained fragment. The authors report the case of a 65-year-old man who presented with a subarachnoid hemorrhage due to the migration of a retained lumbar drain that sheared off during its removal. To the best of the authors' knowledge, this is the first case of rostral migration of a retained intrathecal catheter causing subarachnoid hemorrhage. The authors review the literature on retained intrathecal spinal catheters, and their findings support either early removal of easily accessible catheters or close monitoring with serial imaging.

Otolaryngologic uses for spinal drains

Cerebrospinal fluid (CSF) fistulae have been encountered by otolaryngologists often since the advent of modern endoscopic sinus surgery, otologic surgery, and skull base surgery. Treatment of CSF leaks may include bed rest, head-of-bed elevation, stool softeners, external spinal fluid drainage, and surgery. External CSF drainage is accomplished via a lumbar spinal drain. Placement of spinal drains is often performed by neurosurgeons and anesthetists. A few otolaryngologists have been trained in the placement and management of lumbar drains, but at most otolaryngology training institutions, education in lumbar drains is not provided. However, in some circumstances, it may fall to an otolaryngologist to accomplish the task. We believe that every otolaryngologist, from the generalist in private practice to the academic neuro-otologic surgeon, should understand the proper technique for the insertion and management of a lumbar drain. Otolaryngologists should be familiar with the physiologic properties of CSF, the methods used to diagnose fistulae, and the techniques used to repair leaks. External spinal drainage is an important element in the management of CSF fistulae, and it has been used in treating perilymphatic fistulae and "gushers." Much controversy surrounds its routine use. Otolaryngologists need to understand the risks, benefits, and outcomes of spinal drain use in order to decide which patients may benefit from this procedure.

Assessing risk/benefit of lumbar drain use for endoscopic skull-base surgery

BACKGROUND

Lumbar drains (LD) are frequently employed with the goal of postoperative cerebrospinal fluid (CSF) leak prevention. LD placement is not without risk, however, and complications can significantly increase patient discomfort and resource utilization. The objective of this work was to characterize the risks, benefits, and resource utilization associated with LD use in endoscopic anterior skull-base surgery.

METHODS

A retrospective review of endoscopic anterior skull-base surgeries performed by the senior authors over the past 5 years was done. Cases with prospective LD were selected using anesthesia and billing records. Analysis was done of indications, LD duration, complications, revisions, and additional care required.

RESULTS

A total of 65 patients had LD placed prospectively at the time of surgery. LD were in place for an average of 63 ± 38 hours. Four cases (6.2%) required revision surgery for postoperative CSF leak. Leak rates did not differ between patients with neoplasm (7.7%) and without neoplasm (5.8%; p = 0.80). One readmission was attributable to a recurrent leak. Nine LD complications occurred in 8 patients (12.3%). Overall, 6 blood patches, 3 head computed tomography (CT) scans, 1 open removal of retained catheter fragments, 1 spine CT, and an infectious disease workup were required. Three readmissions and 10 additional hospital days were attributable to LD complications. No relationship was found between patient demographics or comorbidities and LD complications. Regression analysis showed no significant effect of body mass index (odds ratio [OR], 1.01; 95% confidence interval [CI], 0.89-1.14; p = 0.87) or duration of LD (OR, 1.00; 95% CI, 0.98-1.02; p = 0.85) on complication risk. Diagnosis of neoplasm was associated with a significant increase in likelihood of complication (OR, 5.33; 95% CI, 1.11-25.64; p < 0.04).

CONCLUSION

Complications of LD may be more frequent than postoperative CSF leaks, adding significantly to health care resource utilization. It is difficult to predict which patients will suffer LD complications. Reduction of prospective LD use may avoid unnecessary morbidity and resource utilization.