NUR 265

Nur 265 Exam 3 Study Guide Increased ICP (939-940, chart 941) • Normal ICP 10-15 mmHg, pressures >20 mmHg impair cerebral circulation • IICP is leading cause of death from head trauma in pts who reach the hospital alive. • Cerebral Perfusion Pressure (CPP) o Blood flow required to provide adequate oxygenation & glucose for brain metabolism o Maintenance above 70 mmHg o CPP= MAP-ICP ▪ MAP= (2xD) + S MAP NEEDS TO BE ATLEAST 80 3 • Compensation o First Response – CSF is s...

Nur 265 Exam 3 Study Guide Increased ICP (939-940, chart 941)  Normal ICP 10-15 mmHg, pressures >20 mmHg impair cerebral circulation  IICP is leading cause of death from head trauma in pts who reach the hospital alive.  Cerebral Perfusion Pressure (CPP) o Blood flow required to provide adequate oxygenation & glucose for brain metabolism o Maintenance above 70 mmHg o CPP= MAP-ICP  MAP= (2xD) + S MAP NEEDS TO BE ATLEAST 80 3  Compensation o First Response – CSF is s...

NUR 265 Exam 3 Study Guide & Exam Questions and Answers ► What is the normal arterial blood gas (ABG) range for the partial pressure of oxygen (PO2)? o 80-100 mmHg o What if it’s higher than 100? What if it’s lower than 80? ▪ Higher = too much oxygenation … lower = hypoxia ► What is the normal arterial blood gas (ABG) range for the partial pressure of carbon dioxide (PaCO2)? o 35-45 mmHg o What if it’s lower than 35? What is it’s higher than 45? ▪ Decreased = Respirator...