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Published in: Child's Nervous System 5/2018

01-05-2018 | Original Paper

The use of a smartphone-assisted ventricle catheter guide for Ommaya reservoir placement—experience of a retrospective bi-center study

Authors: Sergey Ozerov, U. W. Thomale, M. Schulz, A. Schaumann, A. Samarin, E. Kumirova

Published in: Child's Nervous System | Issue 5/2018

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Abstract

Background

For intraventricular chemotherapy (IVC) as part of many oncological treatment protocols, Ommaya reservoir is enabling repeated access to the cerebro-spinal fluid (CSF). The correct placement of the catheter in the ventricle is essential for correct application of drugs, which is enabled by sophisticated techniques such as neuronavigation.

Objective

In a bi-center retrospective study, we reviewed our experience using a smartphone-assisted ventricle catheter guide as simple solution for correct Ommaya reservoir placement.

Methods

Sixty Ommaya reservoirs have been placed in 60 patients between 2011 and 2017 with the smartphone-assisted ventricular catheter guidance technique. Patient characteristics, preoperative frontal and occipital horn ratio (FOHR), postoperative catheter position, and complications were assessed.

Results

The majority of our patients (71.6%) have got narrow or slit-like ventricles (FOHR ≤ 0.4). All Ommaya reservoirs were placed successfully. Fifty-eight ventricular catheters (97%) were inserted at the first and 2 (3%) at the second attempt using the same technique. No immediate perioperative complications were observed. All catheters (100%) could be used for IVC. Postoperative imaging was available in 52 patients. Thirty-two (61.5%) of ventricular catheters were rated as grade I, 20 (38.5%) as grade II, and none (0%) as grade III. Four patients (6.7%) showed postoperative complications during a median follow-up of 8.5 months (hydrocephalus, n = 1; infection, n = 1; parenchymal cyst around catheter, n = 1; shunt revision, n = 1).

Conclusions

The smartphone-assisted guide offers decent accuracy of ventricle catheter placement with ease and simplicity for a small surgical intervention. We propose this technique as routine tool for Ommaya reservoir placement independent of lateral ventricular size to decrease the rate of ventricle catheter malposition as reasonable alternative to a neuronavigation system.
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Metadata
Title
The use of a smartphone-assisted ventricle catheter guide for Ommaya reservoir placement—experience of a retrospective bi-center study
Authors
Sergey Ozerov
U. W. Thomale
M. Schulz
A. Schaumann
A. Samarin
E. Kumirova
Publication date
01-05-2018
Publisher
Springer Berlin Heidelberg
Published in
Child's Nervous System / Issue 5/2018
Print ISSN: 0256-7040
Electronic ISSN: 1433-0350
DOI
https://doi.org/10.1007/s00381-017-3713-6

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