NU 545 Unit 2 Study Guide Questions and Answers New Update
5 views 0 purchase
Course
NU 545 Unit 2
Institution
NU 545 Unit 2
NU 545 Unit 2 Study Guide Questions and Answers New Update
Know heat exhaustion and heat stroke? - Answer- Exhaustion: -prolonged high core/enviro temps
-weak, dizzy, nauseated, faint
Stroke: -core temp >40C/106F>>vascular collapse, cerebral edema, CNS degeneration, renal tubular necr...
NU 545 Unit 2 Study Guide
Questions and Answers
New Update
Know heat exhaustion and heat stroke? - Answer- Exhaustion: -prolonged high
core/enviro temps
-weak, dizzy, nauseated, faint
Stroke: -core temp >40C/106F>>vascular collapse, cerebral edema, CNS degeneration,
renal tubular necrosis, hepatic failure w/ delirium, coma/death
-treatment: cooling blankets, ice NOT TOO QUICKLY>>periph vasoconstriction
Define the different stages of sleep. - Answer- NREM: slow-wave sleep
-75-80% of sleep time
-temp drops
-dependent respiration
REM: rapid eye movement
-time of most dreaming
-20-25% sleep time
-independent respiration
-loss of tongue muscle control>>respiratory obstruction
-loss of REM>>impaired memory and learning
Heat production - Answer- -Chemical reactions of metabolism/maintaining body at rest
requires energy and produces heat
-Increased muscle tone and shivering
-Chemical thermogenesis through release of epi/norepi increasing metabolic rate
producing rapid, transient increase in heat
Heat loss - Answer- Radiation: electromagnetic waves emanate from warm skin to
surrounding cool air
Conduction: direct contact w/ cool air, water, surface
Convection: warm air of body is replaced w/ cooler air
Vasodilation: core blood transfers heat to body surface
Decreased muscle tone: "washed-out" feeling
Evaporation: major source of heat reduction; sweating; insensible water loss
Increased pulmonary ventilation: hyperventilation is assoc. w/ hyperthermia
Voluntary measures: "taking it easy;" "dressing for warm weather"
Adaptation: adjustment from warm climate to cool
, Discuss disorders of the conjunctiva of the eye. - Answer- Acute bacterial conjunctivitis
(pinkeye):
-highly contagious
-acute onset
-self-limiting; resolves in 10-14 days
Viral conjunctivitis:
-contagious
-watering, redness, photophobia
Allergic conjunctivitis:
-ocular itching, photophobia, burning/gritty feel in eye
Chronic conjunctivitis:
-any persistent conjunctivitis
Trachoma (chlamydial):
-assoc. w/ poor hygiene
-leading cause of preventable blindness
-inflammation w/ scarring of conjunctiva/eyelids; distorded lashes abrading cornea
-surgery for lashes; abx
Keratitis:
-inflammation of cornea d/t bacteria, virus, fungi
-can be noninfectious
-staph a is most common infxn
-herpes type 1 is most common virus
-photophobia, pain, lacrimation
Know the best prognostic indicator of recovery of consciousness and functional
outcome after a brain event. - Answer- -GCS
-functional outcome depends on cause of injury, extent of damage, and duration of
coma
Know the most critical index of nervous system dysfunction/function. - Answer- -LOC:
Level of consciousness
-From alert state LOC diminishes from confusion to coma
Know patterns of breathing with head injuries. - Answer- Posthyperventilation apnea:
cerebrum
Cheyne-stokes: cerebral or diencephalic
Central reflex hyperpnea: CNS damage, lower midbrain, upper pons
Apneusis: respiratory control at pontine level
Cluster: lower pontine, high medullary areas
Ataxic: medulla
Gasping: failing medulla
Know vomiting with which CNS injuries. - Answer- Vomting, yawning, hiccups
-compression diseases of medulla oblongata
-direct involvement of central neural mechanism (vomiting w/o nausea
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
