Tunneled antibiotic-impregnated vs. bolt-connected, non-coated external ventricular drainage: a comparison of complications.

Background: External ventricular drainage (EVD) is a common emergency neurosurgical procedure, but it is not free of adverse events. The aim of this study is to compare the complication rate of two frequently used EVD types, namely, tunneled antibiotic-impregnated catheters (Bactiseal©) and bolt-connected non-coated devices (Camino©). Methods: All EVDs placed between 1 March 2015 and 31 December 2017 were registered. Procedures performed with any catheter different from Bactiseal© or Camino© EVD with incomplete follow-up and those EVDs placed due to infectious disease were excluded. Demographic and clinical variables, as well as the overall complication rate (infection, hemorrhage, obstruction, malposition of the catheter, and involuntary pull-out of the device) and the need for replacement of the EVD, were collected. Results: A total of 77 EVDs were finally considered for analysis (40 Bactiseal® and 37 Camino®). There was a statistically significant difference in diagnosis and also in the location of the procedure, as more bolt-connected EVD was placed outside the operating room (97.3 vs. 23.5%, p < 0.001) due to emergent pathologies such as vascular diseases and spontaneous hemorrhages. In the univariate analysis, a statistically significantly higher rate of catheter involuntary pull-out (29.7 vs. 7.5%, p = 0.012) and the need for EVD replacement (32.4 vs. 12.5%, p = 0.035) was found in the Camino cohort. However, those differences could not be confirmed with multivariable analysis, which showed no association between the type of catheter and any of the studied complications. Ventriculostomy duration was identified as a risk factor for infection (OR 1.09, 95% CI 1.02-1.18). Conclusion: No significant differences were observed regarding infection, hemorrhage, obstruction, malposition, involuntary catheter pull-out, and the need for EVD replacement when comparing non-impregnated bolt-connected EVDs (Camino®) with tunneled antibiotic-impregnated catheters (Bactiseal®). The duration of EVD was associated with an increased risk of infection.

Oral extrusion of a vertebral body replacement device after chordoma tumor growth and radiation: case report and review.

BACKGROUND: Screw migration following anterior cervical discectomy and fusion is a very rare complication and it is often related to device failure. Even more exceptional is the extrusion of an intervertebral graft. CASE PRESENTATION: We report the second case of migration and extrusion through the oral cavity of a cervical vertebral body replacement device (expandable cylinder) in a patient that had undergone cervical corpectomy due to a vertebral chordoma. CONCLUSION: The antecedent of radiation therapy as well as progressive tumor re-growth may have favored the development of this complication. A literature review is added.

Subdural fluid accumulation caused by ventriculoperitoneal shunt underdrainage: A rare and paradoxical complication.

BACKGROUND: Subdural fluid collection in patients with internal cerebrospinal fluid (CSF) shunts has generally been linked to overdrainage and more rarely to pus accumulation. The authors present a previously unrecognized condition leading to extra-axial CSF accumulation: shunt underdrainage. Treatment of coexisting subdural fluid collection and hydrocephalus, disorders that have previously only been reported concurrently following head trauma or subarachnoid hemorrhage, is controversial. In addition, we intend to provide insight into the physiopathology of abnormal CSF accumulation within both the subdural space and ventricles simultaneously. CASE DESCRIPTION: A 42-year-old female with a history of hypothalamic glioma and obstructive hydrocephalus during childhood presented with headache, vomiting, and gait disturbance. Following the insertion of her first ventriculoperitoneal shunt (VPS) by the age of 8, she underwent several surgeries due to shunt failure, all of them associating ventriculomegaly. Ventricles remained notably enlarged following insertion of her most recent VPS, and the computed tomography scan performed 2 months later at her admission showed a large subdural collection. Afterward, a malpositioned distal catheter causing shunt blockage was confirmed. Both, the subdural accumulation and hydrocephalus, were resolved following adequate placement of the peritoneal catheter. CONCLUSION: This case demonstrates that subdural fluid accumulations may occur following VPS underdrainage with hydrocephalus. Development of such extra-axial collection was probably caused by pressure related to CSF spillage from the ventricles into the subdural space. Our case also supports that a mass-effect subdural accumulation with hydrocephalus can be satisfactorily treated with adequate VPS alone, without directly treating the subdural collection.