Exam 2 Flashcards
What are some risk factors for Osteoporosis?
Greater than 65 years old female gender low bodyweight white/Asian ethnicity Current cigarette smoker in active lifestyle family history diet low in calcium or vitamin D excessive alcohol use Postmenopausal Long term corticosteroid/Dilantin use
This type of fracture is due to a disease like Osteoporosis?
Pathological fracture
___[1]___ break down bone tissue for use in remodeling. ___[2]___ build bone tissue.
1-Osteoclasts
2-Osteoblasts
___[1]___ Osteoporosis is when the disease is gotten through natural means.
___[2]___ Osteoporosis is when the disease is gotten through unnatural means like alcohol/corticosteroid use.
1-Primary
2-Secondary
What do these Clinical Manifestations indicate? Kyphosis short stature Pain Unexplained fractures Anxiety/Fear Isolation
As a Nurse, what can you emphasize to help with this disease?
- osteoporosis
- Nutrition (⇧Ca/VitD/Mg), Exercise (Except High Impact), and Drug Therapy.
2 Surgical Interventions for Osteoporosis?
And what do they entail?
- Vertebroplasty: Bone cement is injected into collapsed vertebrae. (Stabilizes; Does not Correct)
- Kyphoplasty: Air bladder is inserted into collapsed vertebra to correct height and then bone cement injected. (Stabilizes/Corrects)
Walking __[1]__ mins [2]-___ times per week helps strengthen bone.
1: 30 min
2: 3-5
What drug therapy is used to treat Osteoporosis?
Estrogen/hormone replacement calcium/Vit D calcitonin Testex Evista (Estrogen Receptor Modulator) Boniva (Biophosphonate) Actonel (Biophosphonate) Fosamax (Biphosphonate)
_____ affects 1-2% of the total Population, affects 3X more women than men, and most frequently occurs between 30-60 years of age (Or 2-5 or 9-12 years old).
-Rheumatoid arthritis
_______ Lines the joint cavity and is the joint space and the fluid contained there.
Synovium
What is the Pathological process of RA?
- Autoimmune
- Inflammation of Synovium
- RBC’s flow into inflamed space where it accumulates
- Pannus Forms (Sheet of Inflamed Granulated Tissue)
What is JRA and what are the 3 Types?
-Juvenile rheumatoid arthritis
➢Pauciarticular:
Affects the knees, ankles, and elbows; more frequent in females
➢Systemic:
characterized by high fever, polyarthritis, rheumatoid rash, joints and internal organs; affects males and females equally
➢Polyarticular:
Involves five or more joints (usually small joints in the fingers and hands may also involve ankles, knees, feet, hips and neck.
Clinical Manifestations of JRA?
➢Limping ➢Favoring a particular joint ➢c/o pain ➢Uneven growth in a limb ➢Swelling in large joints (knee) ➢Loss of motion and stiffness ➢Fever ➢Rash ➢Lymphadenopathy ➢Hepatomegaly ➢Splenomegaly ➢Main Complication – interference with growth and dev’t
______ ________Can Occur in 10-15% of Patients with RA, which results in ⇣Lacrimal/Salivary gland secretion.
Sjogrens Syndrome
Laboratory Manifestations for RA
- Rheumatoid Factor +if RA & -if OA
- ⇡ESR: indicates Inflammation
- ⇣Albumin
Diagnostics for RA?
- X-Ray (Joint changes)
- CT scan (Cervical Spine involvement)
- Athrocentesis
Drugs used to treat RA?
Disease-Modifying Antirheumatic Drugs (DMARDS)
(ex: Methotrexate, Sulfasalazine, Leflunomide, Penicillamine)
NSAIDS
Corticosteroids
Immunosuppresives
(ex: Imuran, Cytoxan, Cellcept)
Nursing Interventions for RA include?
---Pain Relief--- •Rest •Proper positioning •Ice/heat •Adequate nutrition – avoid obesity •Promotion of self care •In acute exacerbation w/joint pain and swelling in hands Hot packs or heated paraffin wax application before exercise will decrease Joint Pain
—Alternatives—
•Hypnosis
•Acupuncture
•Stress management
As a Nurse, what are some Teaching topics for RA?
➢Balance activity with rest ➢Pace yourself ➢Set priorities ➢Delegate responsibilities ➢Plan ahead ➢Children; ongoing PT; Camp
In this disease, urate crystals deposit in the joints and other tissues causing inflammation.
What’s the difference between Primary and Secondary?
- Gout
- Primary: Uric Acid Production Exceeds Normal excretion by kidneys (40-50yo M/Post-mena W)
- Secondary: Uric Acid levels normal but excretion is ⇣
Clinical Manifestations of Gout?
- Swelling inflammation painful joints
- Tophi – hard irregularly shaped nodules in the skin
- Low grade fever
- Malaise
- Headache
- Pruritis
- Renal stones; Depends on type of gout
- Big toe typically affected
RN Interventions for Gout?
- Low purine diet (Avoid;Sardines, Mussels,Venison, Kidney/liver, Goose)
- 2000ml/day fluid
- Decrease weight if needed
- Avoid alcohol and starvation diets
- BR during acute attack; elevate extremity
- Protect affected joint
- Provide hot-cold
Drug interventions for Gout?
•For Acute gout
➢colchicine, Zyloprim, Uloric
➢NSAIDS (ibuprofen, indocin)
•For Chronic – promote excretion of uric acid
➢Zyloprim/Allopurinol
➢Probenecid
(Avoid ASA; causes Uric Acid Retention)
This Disease is a progressive joint deterioration of the articular cartilage that affects weight bearing joints. It is not a result of inflammation, and it is not systemic.
Osteoarthritis
Contributing Factors to OA?
- Age – older
- Obesity
- Smoking
- Trauma that may develop later
- Excessive/Repetitive use of joints
- MVA – Affects pt later in life
Clinical Manifestations of OA?
➢Chronic joint pain and stiffness •Pain and tenderness on palpation – ROM •Crepitus; Crackling in joints •Bony hypertrophy – joint enlarged •Large Bony Nodes appear on both hands (not a bilateraly symmetric disease)
Drug Therapies for OA?
- Tylenol
- Lidocaine patches 5%
- NSAIDS
- Opiods
- Synthetic joint fluid implants
- Intra-articular Injections; One, 3X/week (Orthovisc, Synvisc, Supartz)
- Muscle relaxants
Laboratory assessment for OA?
- ESR; Normal
- Rheumatiod Factor; NEG
- High sensitivity; C reactive protein (hsCRP)
What does CPP stand for? What is it? And what are normal values?
cerebral perfusion pressure. The pressure needed to ensure blood flow to the brain.
60-100 mmHg
What does ICP stand for? What is it? And what are normal values?
Intracranial Pressure, pressure exerted inside skull by brain, blood & CSF
5 - 15 mmHg
How is CPP calculated?
CPP = MAP - ICP
What does MAP stand for? What is it? And what are normal values?
Mean Arterial Pressure. The average arterial pressure in a single cardiac cycle - aka systemic perfusion pressure
(a person’s average BP).
> 60 mmHg
What are effects of CPP <30?
CPP < 50 = ischemia, cerebral death.
CPP < 30 = “incompatible with life” aka U R DEAD!
What happens to CPP if MAP decreases/increase?
What in turn happens to the brain?
MAP decreases, CPP decreases, brain ischemia
MAP increases, CPP increases, ICP increases, brain can herniate!
12 things that can alter CPP
ischemia, tumors, traumatic brain injury, brain surgery, infection, clots, bleed, stroke, aneurysms, meningitis, encephalitis, toxic or metabolic encephalopathies (Lead, arsenic, uremia)
Brain uses _____ % of body’s O2?
Brain uses _____________% of body’s glucose
20% of body’s O2
25% of body’s glucose
How is MAP calculated?
MAP = (2x diastolic + systolic) /3
ICP = sum of the following:
pressure exerted by brain ________%
pressure exerted by blood ________%
pressure exerted by CSF ________%
brain 78%
Blood 12 %
CSF 10%
What is the following known as?
Any increase in the vol of 1 component must be compensated for by a decrease in the vol of one of the other components.
The total vol does not change.
Monroe-Kellie Hypothesis
What is the automatic adjustment of cerebral BV to meet the needs of brain tissue and to maintain cerebral blood flow known as?
autoregulation
How is autoregulation achieved?
vasoconstriction or vasodilation of cerebral BV to control the flow of blood to the brain.
If MAP increases autoregulation causes cerebral BV to ______________
If If MAP decreases autoregulation causes cerebral BV to ______________
Why?
increase in MAP cerebral BV vasoconstrict
decrease in MAP cerebral BV vasodilate
To keep CPP constant.
Autoregulatioon only works with MAP in what range?
Ideally MAP should be?
50 - 150
>60
How does body regulate CSF to control ICP? (3 ways)
increase production of CSF
decrease production of CSF
move CSF from brain (drain to spine)
What is the effect of a constantly increased MAP on CPP and what are some possible results (3 of them)?
inc MAP (aka HTN) leads to inc. CPP Results: aneurysm, stroke, herniation
4 ways ICP is measured?
Which is most common “gold standard”?
Which is likely to be used in ED/trauma situation B4 OR?
Which is most likely to be used to drain CSF?
Main risk with measuring ICP?
Ventricular - Gold standard - ventriculostomy - used to drain CSF
subarachnoid bolt - ED/Trauma
Intraparenchymal - LICOX (measures brain O2, placed in healthy white matter)
epidural -
Main risk - INFECTION!
s/s infection in brain (7)
Problem with Tx?
Change in LOC altered mental status (surely this is the same thing!?!!!) confusion increased WBC fever change in amount of drainage change in color of drainage (+odor) Problem with Tx - Abx can't cross BBB
Common causes of adult & adolescent head injury include (4)
MVA
Firearms, sports,
in Elderly - Falls
Common causes of pediatric head injury include: Infant Toddler School age adolescent
Infant - MVA, shaken baby, falls,
Toddler - MVA, falls (stairs, windows)
School age - MVA, bike, skating, scooter, skateboard
What is leading cause of death among children?
traumatic brain injury
infant presents to ER with: seizures resp irregularities failure to thrive coma What could it be? What causes it? How is it Dx?
Shaken baby syndrome
coup contrecoup (brain bounces back and forth inside skull)
Dx MRI
What is special about babies anatomy that makes shaken baby syndrome worse?
Large head
weak neck muscles
Infant presents to ER with: hypoxemia retinal hemorrhages/detachments subdural hematoma posterior rib fractures What could it be?
shaken baby syndrome
What does CVP stand for? What is it? And what are normal values?
central venous pressure.
The pressure of the blood in the thoracic vena cava (equal to right atrium). This Pressure determines preload and therefore stroke volume and is subsequently a measure of the hearts ability to pump.
4-6
Evaluate the following as normovolemic or hypovolemic: CVP 5 Urinary output 30 mL/hr Osmolality 285 BUN 14 Na 138
Normovolemic (normals) CVP 4-6 Urinary output 30 mL/hr minimum Osmolality 275 - 295 BUN 10 - 20 Na 135 - 145
Evaluate the following as normovolemic or hypovolemic: CVP 2 Urinary output 20 mL/hr Osmolality 300 BUN 21 Na 150
hypovolemic (normals) CVP 4-6 Urinary output 30 mL/hr minimum Osmolality 275 - 295 BUN 10 - 20 Na 135 - 145
Low CPP & Low MAP, normovolemic - how fix?
Increase MAP - vasoconstriction - drugs
Low CPP & Low MAP - how fix?
Increase MAP - vasoconstriction or increase blood volume
Low CPP & Low MAP, hypoovolemic - how fix?
increase MAP - IV fluids, blood, plasma - increase volume.
Mannitol: How administered?
onset?
Side effects?
Administer IV infusion over 30-60 min onset 15 min transient volume expansion (of vasculature) confusion, headache, blurred vision (pg. 810 Davis)
CPP = MAP -ICP 50 = 55 - 5 Is the problem MAP or ICP? CVP 6 UO 100 ml in 2 hours, osmolality is 275 Is volume adequate or not adequate? State Tx
Problem is MAP adequate volume (normovolemic)
Tx with vasoconstrictive drugs
Digoxin - increases contractility of heart.
Dopamine - vassopressor increases BP and cardiac output.
CPP = MAP -ICP 50 = 55 - 5 Is the problem MAP or ICP? CVP 2 UO 20 ml in 2 hours, osmolality is 320 Is volume adequate or not adequate? State Tx
Problem is MAP low volume (hypovolemic)
Tx with fluids to increase volume
Blood, NS, Plasma
Strict I&O
CPP = MAP -ICP 65 = 90 - 25 Is the problem MAP or ICP? CVP 6 UO 60 ml in 2 hours, osmolality is 280 Is volume adequate or not adequate? State Tx
Problem is ICP adequate volume (normovolemic)
Tx REDUCE ICP
Mannitol or drain CSF
CPP = MAP -ICP 65 = 90 - 25 Is the problem MAP or ICP? CVP 1 UO 20 ml in 2 hours, osmolality is 320 Is volume adequate or not adequate? State Tx
Problem is ICP low volume (hypovolemic)
Tx REDUCE ICP
Drain CSF & give fluids to correct volume.
NO MANNITOL BC PT. ALREADY DEHYDRATED!
Inability to speak,obey commands, or open eyes to verbal or painful stimulus is the definition of_________
coma
List the 12 steps of Ms. Hudson’s quick Neuro assessment
- VS include BS
- A&O x3 or GCS
- Speech
- PERRLA EOM (extra occular movement)
- Gag, cough, corneal (blink reflex)
- Face symmetry
- Tongue midline
- Strength normal & L=R
- No drift ( arms out with palms up ?1 drift down?)
- Pain assessment
- Extra ventricular drain - color & amount
- CSF assessment (?some kind of radiology test - no idea why its part of quick neuro assess?!)
What do babies have in skulls that adults do not?
Difference between pediatric nerves and adults nerves?
Fontanels - anterior is 2nd to close around 18months.
peds lack myelination
What are 2 MAIN early signs of increased ICP?
change in LOC
sluggish pupil response