Altered LOC and Increased ICP Flashcards
Signs of altered LOC
decreased alertness, disorientation, confusion, slow pupillary response, changes in GCS, abnormality of cranial nerves, loss of balance/ coordination, change in reflexes, presence of pathologic reflexes
Causes of Altered LOC
head injury, IC bleed, stroke, seizures, tumor, overdose, ETOH intoxication, DKA, renal failure, hepatic failure
Signs of a coma
no response of verbal stimuli, no voluntary movement, varying responses to painful stimuli, abnormal posturing, altered pupin response to light, no blinking, abnormal reflexes, Cheyne Stokes respirations
ICP or Intracranial pressure
hydrostatic force measured in brain tissue and CSF, normal is 0-10, 15 is upper limit, sustained 15 is dangerous
CPP or Cerebral perfusion pressure
net pressure gradient that drives oxygen delivery to cerebral tissue, normal is 70-100, less than 50 leads to irreversible brain damage
Increased ICP- cause
increased production of CSF
Early symptoms of increased ICP
Change in LOC, Weakness, headache, vomiting, possible pupillary changes
Late symptoms of increased ICP
stuporous/ comatose, reaction to painful stimuli only, abnormal posturing, cheyne stokes respirations, loss of brainstem reflexes, cushing’s triad
Decerberate posture
abnormal extension
Decorticate posture
abnormal flexion
Biggest worry with increased ICP
Brain herniation
Gold standard for monitoring ICP
Ventriculostomy
Complications of ventriculostomy
Infection, meningitis, occlusion of the catheter by brain tissue or blood
Other concerns with Increased ICP
Seizure, Fever, DI, SIADH
Nursing Interventions for Increased ICP
Proper positioning, preventing valsalva, straining, constipation, overstimulation, controlling seizures, assessing neuro and respiratory, monitoring fluid status, I&Os, ABGs, Vitals, maintaining patent airway, oral and skin care, pain