NR 340 CRITICAL CARE Exam 3 study guide
Chamberlain College Nursing
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NR-340 CRITICAL CARE Exam 3 study guide (Latest 2022/2023)
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---27November 20212021/2022
- Brain metabolism 
o Soul source of energy for the brain is glucose. Brain needs glucose to function. Brain cannot 
store it, but needs a constant supply. If glucose levels start to fall you will some changed. 
o Cerebral glucose < 70 mg/dL = confusion 
o Cerebral glucose < 20 mg/dL = damage 
· Cerebral blood flow 
· Autoregulation 
o Changes in pressure 
o Changes in CO2 
▪ Alters cerebral blood volume with change in blood vessel size 
o Ability of the blood vessel in the brain to eith...
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