Notes in 26 Neurophysiology & Anesthesia

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Published	12/13/2023	Cerebral blood flow in adults averages about {{c1::750}} mL/min, or {{c2::20}}% of cardiac output.
Published	12/13/2023	{{c3::Transcranial doppler}} is used to measure the {{c1::blood flow velocity}} in the {{c2::middle cerebral artery.}}
Published	12/13/2023	What imaging tests monitor for the development of vasospasm after subarachnoid hemorrhage?{{c1::Transcranial doppler}}
Published	12/13/2023	Cerebral blood flow is directly proportionate to PaCO2 between tensions of {{c1::20}} and {{c1::80}} mmHg.
Published	12/13/2023	How does metabolic acidosis affect cerebral blood flow?{{c1::No change}}
Published	12/13/2023	{{c1::Hypo}}thermia {{c2::decreases}} both cerebral metabolic rate and cerebral blood flow.
Published	12/13/2023	The most important determinant of blood viscosity is {{c1::hematocrit}}.
Published	12/13/2023	Cerebral blood flow is improved with {{c1::low}} viscosity.
Published	12/13/2023	The blood-brain barrier allows for the passage of {{c1::lipid}}-soluble substances.
Published	12/13/2023	The blood-brain barrier restricts the passage of {{c1::ionized}} substances and substances with {{c2::large molecular weights}}.
Published	12/13/2023	Most cerebrospinal fluid is formed by the {{c1::choroid plexuses}} of the {{c2::lateral ventricles}}.
Published	12/13/2023	A normal total CSF production is about {{c1::21}} mL/hr.
Published	12/13/2023	What diuretics inhibit CSF production?{{c1::Acetazolamide}}{{c2::Furosemide}}
Published	12/13/2023	CSF is absorbed into venous sinuses by {{c1::arachnoid granulations}} in the {{c2::superior sagittal}} sinus.
Published	12/13/2023	According to the {{c1::Monroe-Kellie doctrine}}, an increase in one component of the cranium must be offset by an equivalent decrease in another to pr…
Published	12/13/2023	A normal ICP is {{c1::5}} - {{c1::15}} mmHg.
Published	12/13/2023	Volatile anesthetics {{c1::impair}} autoregulation of cerebral blood flow.
Published	12/13/2023	The brain is very vulnerable to ischemic injury because of its dependence on {{c1::oxygen}} and {{c2::aerobic glucose}} metabolism.
Published	12/13/2023	{{c1::Hypothermia}} protocols are used after {{c2::cardiac arrest}} to protect the brain from ischemic damage.
Published	12/13/2023	{{c1::Elevated}} CO2 levels can cause a steal phenomenon by shunting blood away from hypoperfused cerebral tissue.
Published	12/13/2023	ID Vessel: {{c1::Vertebral artery}}
Published	12/13/2023	ID Vessel: {{c1::Basilar artery}}
Published	12/13/2023	ID Vessel: {{c1::Posterior cerebral artery}}
Published	12/13/2023	ID Vessel: {{c1::Posterior communicating artery}}
Published	12/13/2023	ID Vessel: {{c1::Anterior cerebral artery}}
Published	12/13/2023	ID Vessel: {{c1::Anterior communicating artery}}
Published	12/13/2023	ID Vessel: {{c1::Middle cerebral artery}}
Published	12/13/2023	A normal total CSF production is about {{c1::500}} mL/day.
Published	12/13/2023	Cerebrospinal fluid (CSF) flows from the {{c1::lateral ventricles}} through the {{c2::intraventricular foramina of Monro}} into the {{c1::third ventri…
Published	12/13/2023	Normal cerebral blood flow autoregulation occurs with a MAP between {{c1::50}}-{{c1::150}} mmHg.
Published	12/13/2023	The most important extrinsic influence on cerebral blood flow is the {{c1::PaCO2 }}
Published	12/13/2023	The total amount of CSF is {{c1::150}} mL.
Published	12/13/2023	What diuretic can be used to decrease brain water content/volume?{{c1::Mannitol}}
Published	12/13/2023	The {{c1::cerebrospinal fluid (CSF)}} cushions the brain and spinal cord, and clears waste products.
Published	12/13/2023	The {{c1::cisterna magna}} is the largest cistern of the brain and is contiguous with the subarachnoid space.
Published	12/13/2023	What structure allows cerebrospinal fluid to flow from the third ventricle to the fourth ventricle?{{c1::Cerebral aqueduct of Sylvius}}
Published	12/13/2023	What structures allows cerebrospinal fluid to flow from the fourth ventricle to the cisterna magna?{{c1::Foramina of Luschka (2)}}{{c2::Foramina of Ma…
Published	12/13/2023	By convention, intracanial pressure (ICP) is measured in the {{c1::supratentorial space}}, either in the {{c2::lateral ventricles}} or over the {{c3::…
Published	12/13/2023	{{c2::Hyperventilation}} and {{c2::barbiturates}} vasoconstrict {{c1::normal/healthy}} areas of the brain, called the {{c3::Robin Hood}} effect.
Published	12/13/2023	A normal CMRO2 is {{c1::50}} mL/min.
Published	12/13/2023	{{c3::Hyper}}-glycemia causes hypoxic brain injury by accelerating cerebral acidosis and cellular injury.
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