Immune Flashcards

1
Q

There are how many types of leukocytes? Which ones are granulocytes and in what circumstances do they increase? Which are non-granular and their functions?

A

5

Neutrophils: Increased in bacterial infections (a left shift, or bands)
Eosinophils: Increased in allergic and parasiticconditions
Basophils: Increased in allergies mainly

Monocytes/macrophages: phagocytic cells​
Lymphocytes- B and T cells: B-cells produce antibodies and T-cells produce CD4 or CD8 cells

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2
Q

What is natural innate immunity? What kind of defense does it provide?

A

natural defenses and inflammation

Nonspecific, broad spectrum of defense against infections

physical barriers
cellular (phagocytic cells, neutrophils, platelets), and cytokines for communication

intact skin
mucous membranes
cilia in respiratory tract
IgA in saliva and breast milk
histamine
cytokines
prostaglandins
Inflammatory response causing vasodilation
chemotaxis of cells
phagocytosis of foreign material

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3
Q

What makes up pus?

A

dead neutrophils
bacteria
tissue

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4
Q

What constitutes the aquired immune system? What is the function of B lymphocytes? T-lymphocytes?

A

Humoral or antibody response​

B lymphocytes start process and can transform into plasma cells that manufacture antibodies orimmunoglobulins which disable invaders​
IgA,IgD, IgE, IgG, IgM​

2) Cellular immune response​ are theT-lymphocytesthat can turn into cytotoxic (or killer) T cells that attack pathogens​ or CD4 cells

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5
Q

What is the difference between active and passive acquired immunity? In what ways are they aquitred?

A

Active immunity: A result of prior exposure to an antigen either through an immunization or contracting a specific infection
1 exposure to the infection
2 immunizations
3 Humoral antibodies (IgM initially, then IgG is a long-lasting antibody)
4 Memory T-cells to recognize the same infection with future exposure

Passive immunity: not long-term for years
1 antibodies from mother to baby
2 receiving an antibody injection (immunoglobulin shot)

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6
Q

What are the 3 main types of T lymphocyte cells and their functions?

A

1)Helper T cells (aka CD4 cells)
Attack foreign invaders, initiate and augment inflammatory response, increase activated cytotoxic T cells, increase B-cell antibody production

2)Cytotoxic (killer) T cells (aka CD8 cells)
Lyse cells infected with virus; play a role in graft rejection

3)Memory T cells
Remember contact with an antigen and on subsequent exposures mount an immune response

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7
Q

What are 9 variables that can affect immune system function?

A

Age and gender
Many autoimmune disorders are more common in women, thought to be related to sex hormones
Immune system gradually declines with the aging process

Nutrition
Iron, vitamins, fatty acids, micronutrients, etc. are needed for a robust immune system

Presence of conditions and disorders
SLE, RA, MS, psoriasis, cancer, DM, COPD, fibromyalgia
Allergies

Environmental, foods, medications, latex, vaccines

History of infection and immunization​
Childhood and adult vaccines; TB, hepatitis, HIV, STIs, etc.​

Genetic factors

Medications and transfusions-

Lifestyle Factors​
Poor nutrition, smoking, ETOH, illicit drug use, STIs, environmental hazards​

Psychoneuroimmunologicalfactors​: Link between brain and immune system

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8
Q

What lab values indicate neutropenia? Potential causes? What is the ANC? At what level are neutropenic precautions indicated?

A

Neutrophil count: < 2,000/mm3​

bacterial infections
drug-induced bone marrow suppression​

Absolute neutrophil count (ANC) helps determine severity of the client’s risk of infection​, the lower the neutrophil count, the higher the risk of infection

Neutropenic precautions are essential when ANC is <1,000​
Neutropenic clients need to report any fevers or signs of infection

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9
Q

What is a lefft shift in WBCs? What is it also referred as? What does it indicate?

A

Increase of immature neutrophils (bands or stabs)​ in bloodstream from the bone marrow, so we call it a “ left shift” of the WBC count

also referred to as increased “bands”

Strongly associated with a serious bacterial infectionsince neutrophils are being mobilized

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10
Q

What are neutropenic precautuons?

A

Restricting visitors
Protective isolation (reverse isolation)
Prohibiting visits by people who have an infection
Restricting exposure to live plants
Restricting ingestion of fresh fruits and vegetables
Avoid contamination from the client’s own bacterial flora (avoid rectal temps and IM injections)
Immediately report low-grade fever to the provider

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11
Q

What is the neddlestick protocol?

A

Wash the area with soap and water
Alert your supervisor
Identify the source client
Report quickly to employee health
Consent for baseline testing
Post-exposure prophylaxis medications
CDC says to start antiretroviral meds ASAP and no more than 72 hours after possible HIV exposure
2-3 drugs prescribed for 28 days
Follow-up testing
Usually baseline, 6 weeks, 12 weeks, and 6 months
Document in chart

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12
Q

What are the 4 stages of HIV and symptoms?

A

Stage O: primary infection, like a cold

Stage 1: HIM asymptomatic (can be for years)

Stage 2: HIV smptomatic–fever, weight loss, swollen nodes

Stage 3: AIDS–CD4 less than 200 or acquiring an AIDs defining disease

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13
Q

What are the criteria of the primary HIV infection/O stage?

A

From initial infection to the development of antibodies

Antibodies in blood indicate pt is infected with HIV (ELISA test)
AKA acute HIV infection or window period
Window period can last 2 weeks to 6 months

Virus replicates rapidly in CD4 immune cells
Destruction of CD4 T-cell (declining CD4 counts)
Increase in serum viral load
Usually present with non-specific viral illness symptoms that are similar to influenza
Fever, fatigue, sore throat, chills, anorexia, nausea, weight loss, night sweats, rash lasting 1-2 weeks

Person can test negative for at least 2-3 weeks
May test negative for up to 6 months

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14
Q

What are criteria for asymptomatic/stage 1 of HIV?

A

8-10 years on average before a major HIV-related complication develops such as infection

The client can remain asymptomatic for 10 years or more, but the immune system (CD4 cells) are being destroyed and declining in body
CD4 count is often in the thousands in a healthy individual

Clients generally feel well and have few, if any, symptoms

CD4 = 500 or greater
High enough to preserve immune defensive responses, and get just regular infections (like healthy individual)

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15
Q

What are criteria for symptomatic/stage 2/category B of HIV?

A

Over time the virus begins actively replicating using the host’s genetic machinery

CD4+ cells are further destroyed

The viral load increases
CD4 = 200 – 499

The client develops symptoms or conditions related to the HIV infection
Often fatigue, fevers, swollen lymph nodes develop

CD4 <500 will begin to result in the appearance of certain infections fromdestruction of immune system such as tuberculosis

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16
Q

What are criteria for stage 3/AIDS?

A

Defined as : < 200 CD4 or an AIDS defining illness occurs

There are not enough CD4 T-lymphocytes present to fight off infection

As levels drop below 100 cells/mm3, the immune system is severely impaired

This stage is characterized by life-threatening opportunistic infections

“AIDS defining infection” areopportunistic infections that occur in HIV with low CD4 counts

End stage of HIV
Without treatment, death occurs within 5 years from opportunistic infections or cancers

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17
Q

What are 11 AIDS-defining conditions?

A

Candidiasis of esophagus, bronchi, trachea, or lungs

Herpes simplex (chronic ulcers more than 1 month of duration)

HIV-related encephalopathy

Disseminated or extrapulmonary histoplasmosis (fungal)

Kaposi sarcoma (a soft tissue cancer)

Burkitt lymphoma
Mycobacterium tuberculosis (any site)

Pneumocystis jirovecii pneumonia

Recurrent pneumonia

Progressive multifocal leukoencephalopathy

Recurrent salmonella septicemia

Wasting syndrome attributed to HIV

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18
Q

What is the sequence of HIV testing?

A

HIV antibody screening test: enzyme-linked immunosorbent assay (ELISA)
Many false positives, so NOT a definitive test
Takes 2-3 weeks to develop antibodies sorequires repeat testing up to 6 months
Home test kits are available using a drop of blood

HIV antibody confirmation test: Western blot

HIV RNA quantification: HIV viral load test
Used for assessing effectiveness of antiviral medications
If viral load if “undetectable” with antiretroviral therapy,it indicates an excellent response to medications

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19
Q

When is a CD4 count performed? What does a decreasing amount indicate? What is a normal CD4-CD8 ratio inidcate? What can be inferred with a CD4 increase wiith antivirals?

A

Perform when Western blot is positive​

Decreasing count indicates increasing risk of opportunistic diseases
Steadily decreasing count also indicates a poor prognosis or medication resistance/non-adherence

CD4-to CD8 ratio normal is 2:1. A ratio less than 1 indicates severe disease
Used for assessing the health of the immune system

An increasing CD4 count with antiviral medications indicates a strengthening of the immune system

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20
Q

What is the goal of antiretroviral therapy? What combination of drug classes are used to achieve this?

A

suppressHIV replication​

Reduce HIV-associatedmorbidity and prolong durationand quality of life​

Restore and preserveimmunologic function​ of client

Maximally and durably suppressplasma HIV viral load​

Prevent HIV transmission by reducing serum viral load

Use of combination therapy to prevent resistant HIV infection

Nucleoside reverse transcriptase inhibitors (NRTIs)
Non-nucleoside reverse transcriptase inhibitors (NNRTIs)
Protease inhibitors (PIs)
Fusion inhibitors

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21
Q

What are the MOAs of the 4 HIV drug antiviral classes?

A

ENTRY/FUSION INHIBITORS
Blocks the entry of HIV into cells

REVERSE TRANSCRIPTASE INHIBITORS
Blocks the conversion of HIV RNA to DNA

INTEGRATION INHIBITORS
Blocks the HIV DNA to enter the cellular DNA in nucleus

PROTEASE INHIBITORS
Blocks proteases from forming the final HIV protein products

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22
Q

What is the prototype fusion inhibitor med? MOA? Nursing considerations? SE?

A

Prototype: enfuvirtide

A class of antiretroviral drugs that work on the outside of the host CD4 cell to prevent HIV from fusing with and infecting it. Fusion inhibitors act by binding to an envelope protein and blocking the structural changes necessary for the virus to fuse with the host CD4 cell.

Only given by injection
Use is limited due to adverse effects

Side effects
Common injection site reaction (severe pain, erythema, cysts, cellulitis)
Increases the risk of pneumonia

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23
Q

What is the nucleotide reverse transcriptase inhibitor (NRTI) med? For what is it commonly used? SE?

A

zidovudine

Usedin pregnant women to prevent passing the HIVto unborn child
Also given to newborns to protect from HIV mother
Blocks reverse transcription-stops virus from replicating in cells

Side effects
Bone marrow suppression (aplastic anemia)
Black box warning: associated with myopathy with long-term use

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24
Q

What is Kaposi sarcoma? How does it manifest?

A

Cutaneous lesions but may involve multiple organ systems, usually brownish pink to deep purple, may be flat or raised and surrounded by ecchymosis and edema

Lesions cause discomfort, disfigurement, ulceration, and potential for infection

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25
What are S/S of B-cell lymphoma or Hodgkin, Non-Hodgkin lymphoma? What does it typically indicate?
Weight loss, night sweats, fever Poor prognosis due to severe suppression of immune system, and now the need for chemotherapy
26
What is HIV encepalopathy? Patho? nursing considerations?
Progressive cognitive, behavioral, and motor function decline Probably directly related to the HIV infection HIV triggers release of toxins/lymphokines that result in cellular dysfunction, inflammation, and neurotransmitter interference Maintain client safety and initiate seizure precautions
27
What is crytococcus neoformans?
Fungal infection that causes fever, headache, malaise, stiff neck, N/V, mental status changes, seizures by invading the brain tissue
28
-atopy indicates what kind of allergic reactions? Examples?
IgE antibody action and a genetic predisposition atopic dermatitis, asthma, allergic rhinitis)
29
What are diagnostic findings when evaluating allergic disorders? WBC? Eosiniphils? IgE? What is a serum specific IgE test? Skin test? Nursing considerations?
WBC Usually normal except with infection or  inflammation Eosinophil count Elevated with an allergic reaction (bee sting, spider bite, etc.) IgE level High levels support a diagnosis of allergic disease Serum-specific IgE Test ( radioallergosorbent test- RAST) Takes blood of client to test if IgE is present to a specific allergen Skin tests (intradermal or scratch) Considered most accurate confirmation of allergy Emergency equipment must be readily available to treat anaphylaxis!!! Stop all antihistamines/corticosteroids 48 hrs. to 2 weeks prior to the test
30
What are medications for anaphylactic allergies and what doe they target? Can other meds replace epinephrine if anaphylaxis is present?
Oxygen: if respiratory assistance needed due to shortness of breath or hypoxemia Epinephrine IM:  for anaphylactic reactions such as swelling, wheezing, hypotension, vomiting combined with an urticarial rash Antihistamines: for urticarial rash or itching by blocking histamine effect  Corticosteroids: to help reduce systemic inflammation in anaphylaxis  *Adjunct therapy of antihistamines and corticosteroids are not in place of epinephrine*
31
What is the therapeutic response of epinephrine in an anaphylactic allergic response?
Will reduce airway swelling and wheezing plus increase blood pressure
32
What are common food allergies?
Seafood Peanuts and tree nuts Seeds Berries Eggs Wheat Milk Chocolate
33
What are the characteristics of rheumatic diseases?
Inflammation (redness, swelling and tenderness) Autoimmunity  Degeneration and destruction of joints They primarily affect the joints (monoarticular or polyarticular), but also muscles, bone, ligament, tendons, and cartilage, sometime organs
34
What are S/S of rheumatoid arthritis?
Elevated serum rheumatoid factor (RF) Elevated ESR or CRP inflammatory markers Severity of disease varies Bilateral and symmetric Joint pain, redness, swelling and warmth to joints (inflamed) Joint stiffness, especially in the morning  Lack of function gradually develops from deformities Deformities of hands and feet (late manifestation) Joints are “spongy” on palpation (filled with fluid) Typically, begins in small joints of hands and feet
35
What are S/S of systemic rheumatoid arthritis?
Fever Weight loss Fatigue Anemia Lymph node enlargement Raynaud phenomenon of digits Chest pain from pleuritis or pericarditis Chest pain from angina (increased risk of CAD) Rheumatoid nodules Sjogren syndrome (10-15 % of clients with RA have Sjogren syndrome): Dry eyes and dry mucous membranes such as mouth, skin, and vagina
36
What are 3 lab tests for rheumatoid arthritis and what they indicate?
Rheumatoid factor (RF) antibody  Diagnostic level is 1:40 to 1:60 (normal <1:20) High titers correlated with severe disease Other autoimmune diseases can have increased levels (creating diagnostic confusion)  Erythrocyte sedimentation rate (ESR) Elevated ESR is associated with inflammation or infection >70 indicates severe inflammation C-reactive protein (CRP) May be done in place of ESR, or often both are prescribed Used to diagnose, monitor, or assess medication effectiveness >1.0 mg/dL indicates inflammation 
37
What is the medical managment of rheumatoid arthritis?
NSAIDS DMARDS (disease modifying antirheumatic drugs, biologic vs non-biologic) Corticosteroids  X-rays to determine the degree of join destruction  Reconstructive surgery Arthroplasty such as hip, knee, shoulder replacements
38
What is nursing care of rheumatoid arthritis? Client education?
Assist with and encourage physical activity Balance of rest and exercise Teach the client to monitor skin closely Provide referrals for OT and PT to maintain maximal function and ADLs Facilitate use of assistive devices Monitor for medication effectiveness Nutrition therapy High in vitamins, protein, and iron in mall, frequent meals Apply heat/cold to affected areas Balance rest/exercise Follow routine health screenings Report manifestations that can indicate RA exacerbation: fever, infection, pain upon inspiration, chest pain Express feelings regarding body image Use nonpharmacologic pain relief: hypnosis, acupuncture, imagery, music therapy, spiritual practices
39
What is the common non-biologic DMARDS? AEs? Common biologic DMARD? AEs?
methotrexate Bone marrow suppression Ulcerative stomatitis Liver toxicity  Pregnancy category X 6 weeks for therapeutic effects Etanercept- similar: infliximab Given only by injection (subcutaneous or IV infusion) Can cause severe immunosuppression exposing client to cancer and infection Stevens-Johnson syndrome rashes can occur Avoid live vaccines due to immunosuppressed state TB skin test needed prior to many biologic agents
40
What is the patho of systemic lupsu erythematosus? Risk factors?
Exaggerated production of autoantibodies that attack many sites in the body. Varies in severity and progression Periods of exacerbations and remissions throughout life Genetic factors, increased risk if a parent or sibling has disease Immunologic factor Hormonal factor Environmental factor Exposure to medications can cause a flare-up of the disease Sulfa drugs, penicillin, or antibiotic drugs women African Americans
41
S/S of lupus. Systemic? Musculoskeletal? Integumentary? Cardiac? Renal? CNS?
Systemic symptoms: Fever, fatigue, anemia, lymph node enlargement, Raynaud phenomenon, malaise, weight loss, anorexia  Musculoskeletal symptoms: Joint swelling, tenderness, pain on movement, arthritis Skin manifestations: Butterfly-shaped rash across nose and cheeks Pericarditis:- most common cardiac condition. Also increased heart disease Renal involvement: Nephritis due to buildup of antibodies and immune complexes that damage nephrons, which can progress to renal failure CNS involvement: Psychosis, cognitive impairment, seizures, neuropathies, strokes
42
What are diagnostic findings with lupus?
Antinuclear antibodies (positive in 95% of cases) ESR and CRP elevated Pancytopenia Anemia Thrombocytopenia Leukopenia
43
What medications help control effects of lupus, what they effect, and AEs?
NSAIDs: reduce inflammation (Can worsen renal disease, HTN, HF, PUD, and fluid retention) Corticosteroids: used for flare-ups of SLE, usually short-term due to side-effects Monoclonal antibodies (belimumab/Benlysta): DMARD to suppress immune system  Antimalarials (hydroxychloroquine):  DMARD, remember eye check-ups annually Methotrexate: DMARD, suppresses immune system, monitor for fevers/infections, petechiae (low platelets), and signs of anemia (know the symptoms of bone marrow suppression which involves 3 cell lines)
44
What is client education for lupus?
Teach to avoid cold for hands/toes​​ Pain management (pharmacologic and nonpharmacologic)​​ Protect from sun exposure​​- sunscreen and protective hats/clothing Use mild protein shampoo and avoid harsh hair treatments Impaired skin integrity​ Use steroid creams for rash Cleanse skin with mild soap and inspect skin daily Apply lotion to dry skin Avoid powders, alcohol, or anything drying Pat skin dry rather than rubbing Report evidence of infection, peripheral edema, or periorbital edema immediately
45
What is the patho of osteoarthritis?
Most common joint disorder Not considered an inflammatory arthritis Incidence increases with age (can affect any age) Not from autoimmunity of inflammation Limited to affected joint, no systemic symptoms  By age 40, 90% of adults have some degenerative joint changes 85% of people over 65 years of age has radiographic changes indicating OA Articular cartilage breaks down leading to progressive damage of the bone​ Joint space narrows, develops bone spurs (osteophytes) Not considered a "normal part of aging" but aging is the biggest risk factor
46
What is the medical management of osteoarthritis?
Goals are to decrease pain and stiffness and maintain/improve joint mobility Acetaminophen is first line due to safety profile NSAIDs  Corticosteroid injections  Topical analgesics such as diclofenac gel Weight reduction Exercise (cardio and strength training) Orthotic devices (splints, braces, canes, walkers) Massage, yoga, acupuncture, TENS (research under way to determine effectiveness) OT and PT Surgery (osteotomy and arthroplasty)
47
What is the patho fo gout? Risk factors?
The most common intermittent inflammatory arthritis  Uric acid results from the breakdown of nucleic acids in cells (so think of which foods worsen condition) Hyperuricemia occurs (increased serum uric acid) causing uric acid crystals to deposit in joints and body tissues Risk factors Age  Males are mainly affected until women reach menopause (estrogen was protective against gout before menopause) High BMI Postmenopausal women and adult males of any age Genetic predisposition High intake of purine rich foods (shellfish, organ meats) Alcohol ingestion  Some chemotherapy agents since they destroy cells, and release nucleic acids Chronic renal failure, diabetes, hypertension and heart disease Medications such as hydrochlorothiazide diuretics
48
What are the S/S of gout?
Acute inflammatory arthritis from uric acid crystals in joint Severe pain, redness, warmth, and swelling of the affected joint Most common in big toe joint, but also includes foot, ankle, knee Attacks can come suddenly, often at night Very painful when the swollen joint is touched or moved Appearance of tophi in soft tissues with chronic gout Most attacks will subside over 3-10 days with treatment Attacks come and go but result in gradual joint damage
49
What medications are used to manage acute flare-ups of gout?
NSAIDs: First-line therapy for acute attack Monitor for side-effects (renal injury, hypertension, edema, PUD, bleeding) Colchicine:  Acute attack, when NSAIDs are not effective Decreases inflammation Explosive diarrhea limits use Corticosteroids:   Oral prednisone or dexamethasone for acute attacks Not first-line due to assorted list of side-effects (important to know)
50
What is the preventative medications for gout? MOA? SE? Client teaching?
allopurinol Reduces uric acid production resulting in lower serum levels Side effects are rare, but can cause Stevens-Johnson syndrome​ and possible bone marrow suppression Renal toxicity (drink 2 L fluids a day)​, so maintain hydration Monitor uric acid levels ​ Clients often take for life to reduce the acute attacks of gout Can also help reduce kidney stones if caused by uric acid stones
51
What are adjunct measure to manage gout?
Restrict foods high in purines Organ meats (liver, kidneys), beer, sardines, shellfish, mushrooms, asparagus, gravy Limit intake of ETOH Avoid starvation diets, aspirin, and diuretics Limit physical or emotional stress Increase fluid intake Maintain normal body weight
52
What is the patho of fibromyalgia?
Chronic pain syndrome Chronic fatigue- #1 problem and concern Generalized, widespread, bilateral musculoskeletal pain or tenderness   Stiffness to muscles and joints Sleep disturbances  Amplification of pain signals Predisposing factors to increased pain: anxiety, depression, physical trauma, emotional stress, insomnia, and viral infection
53
How is fibromyalgia managed? Nursing considerations? Client education?
Medical Management NSAIDs Antidepressants (can help improve pain) Anticonvulsants such as pregabalin or gabapentin Treat insomnia with tricyclic antidepressant (amitriptyline) or trazadone  Exercise, PT/OT  Nursing Management Assess/monitor pain, mobility, and fatigue Support and encouragement Clients typically have had symptoms for extensive period and may feel that their symptoms have not been taken seriously Limit intake of caffeine, alcohol, and other substances that interfere with sleep Develop a sleep routine Engage in low-impact exercise daily Acupuncture, stress, management, tai chi, hypnosis can also be used
54
What is the chain of infection?
causative organism reservoir (a location that provides growth/survival of the organism) portal/mode of exit from the reservoir mode of transmission to host susceptible host portal/mode of entry
55
What are standard precautions?
hand hygiene gloves proper handling of client equipment and linens environmental control prevention from sharps injuries
56
What are airborne precautions? What diseases requires such precautions? Mneumonic to help remember?
negative air pressure room private room keep door closed N-95 measles varicella herpes zoster TB My chicken has TB
57
What are droplet precautions? Diseases needing such precautions?
standard plus face mask within 3-6 feet influenza menigitis mumps pertusis
58
What are contact precautions?
standard plus private room gowns masks not needed, but you probably will want one C Diff MRSA
59
What is the patho of MRSA? Treatment? Considerations? Why is there an increase is VRSA?
Easily colonizes on skin Individual serves as a reservoir for MRSA transmission to others Infection can spread to wounds or immunocompromised clients Treated with mupirocin ointment if not extensive or IV vancomycin if severe or systemic Admission screenings Contact isolation Clients regularly bathed with chlorhexidine gluconate solution to decrease microbial count on skin VRSA Vancomycin-resistant staphylococcus aureus With control of MRSA, the emergence of VRSA strains should decrease
60
What is vancomycin resistant enterococcus?
VRE Normally found in the GI tract Admission screenings done Survives well on skin/hands and environmental objects 2nd most common source of HAIs in US Contact isolation
61
What is a CLABSI? What location is of highest risk? Prevention?
central line associated stream infection Femoral site aseptic dressing changes Aseptic caps on ports- port cleaning is essential prior to access! Clean with friction Bundles on temporary non-tunneled central lines Change clear dressings every 7 days
62
What can be done to reduce the incidences of CAUTIs?
Decrease use of catheters Assess need daily No dependent loops in tubing Urometer must be kept off the floor Securement of device to avoid traction Peri care with soap and water at least twice daily
63
What is VAP? What can reduce incidences?
ventilator associated pneumonia HOB at 30 degrees Extubate as soon as possible Daily assessments to potentially extubate Oral care every two hours with chlorhexidine  Endotracheal suctioning as needed (not every 2 hour if not needed)
64
When is the MMR immunizations administered?
12-15 months of age Repeat dosing at 4-6 years of age
65
Who is is the varicella immunization contraindicatedin? Why? When is the herpes zoster immunization recommended?
pregnant and immunocompromised it's a live vaccine 60+ years
66
What allergy is contraindicated in some influenza vaccines?
egg
67
What causes campylobacter infections? What is the frequent symptom? Treatment? Prevention? Complication associated with thisi infection?
found in poultry, beef, pork diarrhea usually resolves, if severe ciprofloxacin cook and store meat appropriately separate kitchen supplies used to prepare meat Guillain-Barre
68
What sources is salmonella prevelent?
chicken eggs sprouts, fruits and vegetables
69
What is the patho of escherichia coli? How is is transmitted? What serious complication can occur?
Most common aerobic organism colonizing the large bowel Part of normal flora Some strains of E. coli lead to severe diarrhea and rapid dehydration Ingestion of undercooked beef and vegetables that have been contaminated by animal wastewater Cook beef thoroughly until the juices run clear Bacterium lives in the intestines of cattle and can be introduced into the meat during slaughter  May result in hemolytic uremic syndrome (HUS) form E.coli toxin
70
What type of organism is giardia lamblia? How is it transmitted? Symptoms?
protozoa through contaminated food and drink, fecal-oral abd. pain, nausea, diarrhea, fever
71
What is the rehydration protocol for infectious diarrhea? What should be avoided? What are potential complications?
Mild dehydration: 50 mL of oral rehydration salts (ORS) per 1kg of weight over 4 hours Moderate dehydration 100 mL/kg of ORS over 4 hours Severe dehydration IV replacement until hemodynamic and mental status return to normal Avoid anti-diarrheal medications for infectious diarrhea                                  Bacteremia, hypovolemic shock/sepsis
72
What are S/S of the zika virus? What are pregnant women cautioned to do?
Mild fever Rash Headache Conjunctivitis Joint/muscle pain Microcephaly and congenital abnormalities in infants of some women infected with Zika during pregnancy Guillain-Barre syndrome not traveling in endemic areas safe sex/abstinence with partners who have traveled
73
What are S/S of West Nile Virus? Cause? Reservoir?
Usually a mild presentation HA Fever Persistent fatigue Caused by a mosquito bite Birds are the natural reservoir for the virus
74
How is the ebola virus spread? S/S? Potential complication?
Spread through direct contact with blood or body fluid, handling bats or wild animals hunted for food S/S High fever Muscle aches Fatigue Severe diarrhea Abdominal pain Vomiting 5% develop bleeding or hemorrhage Severe dehydration can lead to hemodynamic shock
75
What is Legionnaires disease? Reservoir? Treatment?
Multisystem illness Includes pneumonia and respiratory symptoms Found in water sources man-made and naturally occurring Incidence increases during Summer and Fall months and growth occurs in plumbing systems Treated with antibiotics