CRITICAL CARE FINAL 2023 QUESTIONS AND ANSWERS ALREADY PASSED A+

Cerebral blood vessels dilate in response to: - CORRECT ANS Increased serum carbon dioxide Pressure regulation is an autoregulatory mechanism whereby cerebral blood vessels constrict in response to: - CORRECT ANS Systemic HTN Cerebral blood flow decreases with: - CORRECT ANS -Cerebral edema -Low CO -Cerebral vasoconstriction The Monro-Kellie hypothesis states that volume increases in teh adult intracranial vault: - CORRECT ANS -Are initially well tolerated through compensatory mechanisms What component of intracranial volume is displaced most easily and rapidly? - CORRECT ANS -CSF Flexion of the neck may cause elevations in intracranial volume by: - CORRECT ANS -Causing a decrease in venous outflow What is the CPP if MAP is 95 mm Hg and ICP is 15 mm Hg? - CORRECT ANS CPP=MAP-ICP 95-15= 80 mm hg Normal cerebral perfusion pressure? - CORRECT ANS 80-100 mm Hg *Must be 70 mm Hg to ensure adequate cerebral oxygenation. Normal intracranial pressure - CORRECT ANS 0-15 mm Hg 15 mm Hg in adults for more than 5 minutes is considered elevated