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Fig. 5 | Intensive Care Medicine Experimental

Fig. 5

From: Hydrocephalus and the neuro-intensivist: CSF hydrodynamics at the bedside

Fig. 5

Example of a constant rate infusion test in a post-SAH patient with brain atrophy. ICP during the infusion study (gray area) remains low, increasing from 5.24 mmHg to 10.36 mmHg (plateau values). There is no increase in either RAP index or AMP (amplitude), whereas there is a lack of B waves during infusion (absence of significant spikes in ICP and AMP signals). Elasticity and resistance R to CSF outflow are 0.04 ml−1 and 3, 4 mmHg × ml−1 × min−1, respectively. Such low values indicate brain atrophy rather than hydrocephalus

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