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7 Cards in this Set

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  • Back
Characteristics of normal pressure hydrocephalus
1) progressive dementia
2) uriniary incontinence
3) disordered gait
4) not associated with increased ICP
Monro-Kellie hypothesis
When pressure rises in one of the three intracranial compartments (blood, parenchyma, CSF), it occurs at the expense of the other two in order to maintain proper ICP.
Consequences of rising ICP
1) when pressure rises above venous pressure, blood cannot flow out and makes ICP worse
2) when pressure exceeds arterial pressure, lack of blood results in ischemia
Clinical manifestations of rising ICP
1) Headache
2) Nausea and vomiting (sometimes without nausea)
3) Drowsiness progressing to coma
4) Ocular palsies
5) Papilledema and loss of vision
6) "Cushing response"
"Cushing response"
Systemic signs of rising ICP
1) Bradycardia
2) Elevated systolic pressure
3) Irregular respirations
"Respirator Brain"
aka. brain death
Autolysis of dead unperfused brain
"Persistent vegetative state"
Enough brainstem function survives to allow spontaneous ventilation, autonomic control and sleep-wake cycles but without awareness.