Anaes SAQs · Applied cardiovascular & respiratory physiology
CSF and intracranial pressure physiology
Primary — CSF production at the choroid plexus (about 500 mL per day), circulation (ventricles, foramina, subarachnoid), absorption at arachnoid granulations; Monro-Kellie fixed-volume doctrine; normal ICP 5 to 15 mmHg; CPP = MAP minus ICP; compensation and decompensation, Cushing triad; volatile/propofol/ketamine effects.
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ANZCAFRCAABAEDAIC
Prompt
Describe the formation, circulation and absorption of CSF. Explain the Monro-Kellie doctrine and its relevance to cerebral perfusion pressure and raised intracranial pressure.
Question
Describe the formation, circulation and absorption of CSF, as defined in the stem. Explain the Monro-Kellie doctrine and its relevance to cerebral perfusion pressure and raised intracranial pressure.
References4ShowHide
- [2]Engelhard HH, et al. Variability in the circulation of cerebrospinal fluid: causes and clinical implications for intraventricular drug delivery. Front Drug Deliv, 2026.PMID 42205472
- [5]Bader SE, et al. Resuscitative endovascular occlusion of the aorta restores cerebral metabolic markers of ischaemia induced by haemorrhagic shock. Eur J Trauma Emerg Surg, 2026.PMID 42340407
- [4]Haywood S, et al. Ketamine Use in Acute Brain Injury: Debunking the Myth. Emerg Med Clin North Am, 2026.PMID 42342307
- [1]Wang N, et al. Noninvasive whole-brain imaging of glymphatic dynamics. Sci Adv, 2026.PMID 42308292