Pinggera et al identified the volume of the third ventricle as a predictor for shunt dependency after aneurysmal subarachnoid hemorrhage. The authors are from the Medical University of Innsbruck in Austria.

Patient selection: aneurysmal subarachnoid hemorrhage


Analysis: initial CT, with volumetric analysis of the third ventricle


Criteria for shunt dependency - placement of a ventricular shunt based on:

(1) increasing ventricular size

(2) clinical deterioration


A third ventricular volume >= 2.3 cubic cm was associated with a 4.3-fold increase in shunt dependency.

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