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Acta Neurochirurgica

, Volume 161, Issue 1, pp 33–39 | Cite as

The Aalborg Bolt-Connected Drain (ABCD) study: a prospective comparison of tunnelled and bolt-connected external ventricular drains

  • Sofia Kamakh AsaadEmail author
  • Carsten Reidies Bjarkam
Original Article - CSF Circulation
  • 76 Downloads
Part of the following topical collections:
  1. CSF Circulation

Abstract

Background

Acutely increased intracranial pressure (ICP) is frequently managed by external ventricular drainage (EVD). This procedure is life-saving but marred by a high incidence of complications. It has recently been indicated that bolt-connected external ventricular drainage (BC-EVD) compared to the standard technique of tunnelled EVD (T-EVD) may result in less complications.

Aim

To prospectively sample and compare two cohorts by consecutive allocation to either BC-EVD or T-EVD from the introduction of the BC-EVD technique in our department and 12 months onward.

Methods

Patients undergoing ventriculostomy between the 1st of March 2017 and the 28th of February 2018 were considered for inclusion. The neurosurgeon on-call sovereignly set the indication and decided on EVD type (BC-EVD or T-EVD), consequently resulting in two cohorts as 3/7 senior neurosurgeons on call were open to the use of BC-EVD, while 4/7 were reluctant to use this technique. Data was continuously collected using patient records, including results of cerebrospinal fluid (CSF) culturing and available CT/MRI-scans. Recorded complications included CSF leakage, accidental discontinuation, placement-related intracranial haemorrhage, malfunction, migration, infection and revision.

Results

Forty-nine EVDs (32 T-EVDs/17 BC-EVDs) were included; 19/32 (59.4%) T-EVDs and 3/17 (17.6%) BC-EVDs were found to have complications (p = 0.007). The relative risk of complications when using T-EVD was 3.4 times that of BC-EVD.

Conclusion

Ventriculostomy by BC-EVD compared to T-EVD reduces incidence and risk of complications and should be the first choice in EVD placement. That said, T-EVD has a role in paediatric patients and for intraoperatively and occipitally placed EVDs.

Keywords

Complications Cranial bolt Hydrocephalus Neurosurgical technique Subcutaneous drain tunnelling Ventriculostomy 

Abbreviations

BC-EVD

Bolt-connected external ventricular drain

EVD

External ventricular drain(age)

CSF

Cerebrospinal fluid

ICH

Intracerebral haemorrhage

ICP

Intracranial pressure

ICU

Intensive care unit

IVH

Intraventricular haemorrhage

SAH

Subarachnoid haemorrhage

SD

Standard deviation

T-EVD

Tunnelled external ventricular drain

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Neurosurgery, Institute of Clinical MedicineAalborg University HospitalAalborgDenmark

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