Does duration and sampling of external ventricular drainage systems influence infection rate?

Abstract Introduction External Ventricular Drainage (EVD) is a neurosurgical technique used to lower the intercranial pressure while cerebrospinal fluid (CSF) flow is obstructed. The infection rate associated with the EVD insertion in the UK is 9.3%, with ventriculitis being the most common one. The aim of the audit was to compare our outcomes and infection rates and national standards and to implement an EVD Management protocol to improve patient outcome. Methods The data was collected from 43 patients, 98% of whom were emergency admitted cases. For all EVD procedures, silver coated catheters were used. The surgical factors such as the surgical team performance and the average operative time (1h 11min) were accounted for in the audit. The most common reason for EVD insertion was subarachnoid haemorrhage. Prophylactic antibiotics were administered in all cases before the surgery. 12% of the EVDs were used for Intercranial Pressure Monitoring. Results 12% patients’ samples had catheter associated infections. The average EVD insertion period was 18 days. Leaks occurred in 11 cases (26%). 3 of them subsequently developed ventriculitis. White cell count result was over 10,000 cells per mm3 in 40% of patients. Conclusions Twice longer sampling time then the national average (8 days) increased the number of ITU transfers. The cause would be the use of out-of-date EVD type. However, the silver impregnated lines versus non-impregnated have a lower cerebrospinal fluid infection rate, the bolt connected EVDs would be more precise and decrease the rate of resuturing and hence decrease a chance of CSF infection.

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Faculty Opinions recommendation of Primary external ventricular drainage catheter versus intraparenchymal ICP monitoring: outcome analysis.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.735647878.793570917 ◽

2020 ◽

Author(s):

Juan Sahuquillo ◽

Alberto Biestro ◽

Pedro Enríquez

Keyword(s):

External Ventricular Drainage ◽

Outcome Analysis ◽

Ventricular Drainage ◽

Icp Monitoring ◽

Drainage Catheter

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Value of Routine Monitoring of CSF in Patients with External Ventricular Drainage

Neurosurgery ◽

10.1097/00006123-199809000-00224 ◽

1998 ◽

Vol 43 (3) ◽

pp. 682-682

Author(s):

Walter J. Hader ◽

Paul Steinbok

Keyword(s):

External Ventricular Drainage ◽

Ventricular Drainage ◽

Routine Monitoring

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Intracranial Pressure during External Ventricular Drainage Weaning Is an Outcome Predictor of Traumatic Brain Injury

BioMed Research International ◽

10.1155/2020/8379134 ◽

2020 ◽

Vol 2020 ◽

pp. 1-7

Author(s):

Jia-cheng Gu ◽

Hong Wu ◽

Xing-zhao Chen ◽

Jun-feng Feng ◽

Guo-yi Gao ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Intracranial Pressure ◽

External Ventricular Drainage ◽

Unfavorable Outcome ◽

Ventricular Drainage ◽

Outcome Group ◽

Significant Difference ◽

The Mean ◽

The Relationship

External ventricular drainage (EVD) is widely used in patients with a traumatic brain injury (TBI). However, the EVD weaning trial protocol varies and insufficient studies focus on the intracranial pressure (ICP) during the weaning trial. We aimed to establish the relationship between ICP during an EVD weaning trial and the outcomes of TBI. We enrolled 37 patients with a TBI with an EVD from July 2018 to September 2019. Among them, 26 were allocated to the favorable outcome group and 11 to the unfavorable outcome group (death, post-traumatic hydrocephalus, persistent vegetative state, and severe disability). Groups were well matched for sex, pupil reactivity, admission Glasgow Coma Scale score, Marshall computed tomography score, modified Fisher score, intraventricular hemorrhage, EVD days, cerebrospinal fluid output before the weaning trial, and the complications. Before and during the weaning trial, we recorded the ICP at 1-hour intervals to calculate the mean ICP, delta ICP, and ICP burden, which was defined as the area under the ICP curve. There were significant between-group differences in the age, surgery types, and intensive care unit days (p=0.045, p=0.028, and p=0.004, respectively). During the weaning trial, 28 (75.7%) patients had an increased ICP. Although there was no significant difference in the mean ICP before and during the weaning trial, the delta ICP was higher in the unfavorable outcome group (p=0.001). Moreover, patients who experienced death and hydrocephalus had a higher ICP burden, which was above 20 mmHg (p=0.016). Receiver operating characteristic analyses demonstrated the predictive ability of these variables (area under the curve AUC=0.818 [p=0.002] for delta ICP and AUC=0.758 [p=0.038] for ICP burden>20 mmHg). ICP elevation is common during EVD weaning trials in patients with TBI. ICP-related parameters, including delta ICP and ICP burden, are significant outcome predictors. There is a need for larger prospective studies to further explore the relationship between ICP during EVD weaning trials and TBI outcomes.

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