Case-Based Modules > Case 5 > Stage 4

Yes! It might seem unusual. However, this is very much a consideration if viable from a technical standpoint. When you think about it, considering Monro Kellie etc., removing CSF volume will leave space for the other compartments. Technically, per Stocchetti and Maas 2014, this is listed as the step to take after an increase in sedation but before hyperosmolar therapy is utilized, though you may not see this strict sequential order followed as often in real clinical practice. Looking at the patient's repeat CT, you can appreciate that his ventricles remain quite open, so EVD placement shouldn't be difficult. If they were slitlike, though, then an EVD is less likely to be feasible and unlikely to be helpful.

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