NSG 4330 Lecture 6: Complex Care Class 6 Notes TBI
11 Nov 2020
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Adheres to the suture lines on the insude of the skull. Epidural or subdural hematomas can form pockets of blood between the layers of the meninges. Dura mater: outermost layer, fibrous; provides support to lobes. Arachnoid mater: spider-lke, covers subarachnoid space that contains csf; absorbs csf via arachnoid villi. Pia mater: delicate membrane that adheres to surface of brain ; choroid plexus produces csf. Epidural space: between dura mater and the skull. Subdural space: between dura mater and arachnoid space. Subarachnoid space: between arachnoid mater and pia mater; contains csf. Ventricular system: 2 lateral ventricles; 3rd ventricle in midline inner brain, 4th ventricle posterior to brainstem structures; continuous with central canal of spinal cord. Communication between 2 lateral ventricles called the foramen of monroe. Important landmark for levelling external drainage systems/transducers; level at eam (external auditory meatus), at tragus of ear. Contains water, glucose, o2, co2, na, k, cl, proteins, and a few.
