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HIV/AIDs
Systemic II Exam III
53
Medical
Graduate
11/14/2012

Additional Medical Flashcards

 


 

Cards

Term
Approx how many people have died of AIDS
Definition
30 million
Term
How many people died of AIDS  in 2011
Definition
1.7 million
Term
US rate of HIV infection?
Definition
11/100 000
Term

Of those affected with HIV in the US, how many are unaware

in Canada?

Definition

20%

26% in Canada

Term
Name 2 populations most affected by HIV
Definition

Men who have sex with men (61% of new HIV infections in 2009)

African Americans

Term
How is HIV transmitted?
Definition

Exchange of body fluids

-sex

-blood

-perinatal

-transplant

Term
Which cells are most likely to be damaged by HIV
Definition
Immune cells, specifically CD4+ Helper T cells
Term

Briefly describe the 10 stages of HIV life cycle

 

Definition

1. Virus binds to cell

2. Virus fuses and enters cell

3. Virus uncoats and releases enzymes

4. Reverse transcription produces viral DNA from viral RNA

5. HIV DNA integrated into cell DNA

6. Transcription to produce viral mRNA

7. Genome replication

8. HIV protein synthesis

9. Protein cleavage

10. Virus assembly and spread

Term
Name 3 enzymes vital to the life cycle of HIV
Definition

Integrase

Protease

Reverse Transcriptase

Term

term for

number of HIV-1 RNA molecules per milliliter of plasma

Definition
Viral Load
Term
Unit for viral load
Definition
Log units, so log 3 =1000 molecules per milliliter of plasma
Term
Average CD4+ numbers
Definition

1000 cells/mm^3 (600-1500)

or 32-68% of lymphocytes

 

Term
CD4+ value that indicates increased risk of opportunistic pathogens
Definition
<200 cells/mm^3
Term
Typical time course for initial stage of HIV infection
Definition
2-4 weeks
Term
Typical time course for Chronic stage of HIV infection
Definition
months to years
Term
Typical time course for Crisis/Final stage of HIV/AIDS
Definition
Months to years
Term
Average time course of HIV from infection to full blown AIDS/ death without treatment
Definition
10 years
Term
Findings in initial stage of HIV
Definition

mild flu like symptoms that go away

Infection continues to spread in the body although illness goes away

Term
Findings in Chronic stage of HIV
Definition
Minor constitutional changes as viral load is increasing, still transmissable
Term
'Constitutional' Findings in Crisis Stage of HIV
Definition

Now termed AIDS

anorexia, weight loss

fatigue

fever

malaise

night sweats

diarrhea

lymphadenopathy

Term
CNS findings in crisis stage of HIV (AIDS)
Definition

Dementia

progressive memory loss

depression

social withdrawal

seizures

Term
CDC case definition of AIDS involving CD4+ cells
Definition

HIV+ plus

CD4+ <200 or <14%

Term
There are a few CDC case definitions of AIDS involving 3 non-opportunistic diseases, name them
Definition

HIV+ plus

Pulmonary TB

Recurrent pneumonia

invasive cervical cancer

Term
Name 5 of the most common opportunistic infections included in definition of AIDS
Definition

Kaposi's sarcoma

CMV 

disseminated histoplasmosis

toxoplasmosis of brain

pneumocystic carinii pneumonia

Term
Ocular manifestation of Cytomegalovirus in AIDs
Definition
Retinitis
Term
Ocular manifestation of viral infection in AIDs (herpes,varicella)
Definition

keratitis

retinitis

uveitis

Term
Ocular manifestation of Mycobacterium tuberculosis in AIDs
Definition

Phylctenulosis

retinitis

Term
Ocular manifestation of Fungal infections in AIDs (like histo and candida)
Definition

Keratitis

Retinitis

Term
Ocular manifestation of Protozoal infections in AIDs (like toxo)
Definition
Chorioretinitis
Term
What is the most commonly diagnosed malignancy in AIDS
Definition
Kaposi Sarcoma
Term
What do Rapid HIV tests look for?
Definition
HIV-1 Antibodies
Term
Which is the only Rapid HIV test that uses Oral fluid
Definition
OraQuick Advance
Term
Which is the fastest Rapid HIV test?
Definition
Reveal G-3
Term
What specimen does Reveal G-3 Rapid HIV test use?
Definition
Serum & Plasma
Term
Which test is most sensitive for HIV-1?
Definition
Western blot
Term
Which test is used to confirm positive results from rapid tests or EIA?
Definition
Western blot
Term

Which of these is NOT a common indication for when to start ART 

 

HIV nephropathy

CD4+<200

CD4+ <350

Active TB  

Definition
CD4+< 200
Term

Which of these is NOT a common indication for when to start ART 

 

Hep B co-infection

Pregnancy

Cancer

AIDS defining illness

Definition
Cancer
Term
Name 2 indications for when ART is 'recommended' 
Definition

>50 yo

CD4+ 350-500 cells/mm^3

Term
4 goals OF HIV treatment
Definition

Suppression of viral load (decrease transmission)

Restore/preserve immune system

improve quality of life

Reduce morbidity/mortality

Term
4 categories of approved HIV medications
Definition

Entry inhibitors

Nucleoside/tide reverse transcriptase inhibitors (nukes)

Non-nucleoside/tide reverse transcriptase inhibitors (non nukes)

Integrase inhibitors (INSTIs)

Protease inhibitors (PIs)

Term
Mechanism of Entry inhibitors
Definition
Prevent HIV from binding to CD4+ cells, thus preventing them from entering the cell. 
Term
Contrast nukes and non-nukes
Definition

Nukes cause production of faulty materials to build proviral DNA, causing termination of the DNA chain

 

Non-nukes prevent RT from convertng RNA to DNA correctly -no building blocks

 

Term
Which drug category blocks the enzyme that allows insertion of viral DNA into human DNA, subsequently preventing replication of the virus
Definition
Integrase Inhibitors
Term
Which HIV drug category is associated with Steven's Johnson Syndrome
Definition
Integrase Inhibitors
Term
Which HIV drug category prevents the cutting of the DNA strand, preventing the production of new infectious copies
Definition
Protease inhibitors
Term
3 forms of ART
Definition

-2 nukes & 1 non nuke

-2 nukes & 1 PI

-2 nukes & 1 INSTI

Term
4 disadvantages of ART
Definition

Expensive

complicated

Increased drug SE

viral mutations decrease effectivity

Term
Advantage of combo meds in HIV tx over other regimens
Definition
Decreased complexity of treatment
Term
Describe Atripla
Definition

HIV drug

1 non nuke, 2 nukes

1 tablet qd

First line tx in tx naive

Term
Describe Stribild
Definition

HIV drug

2 nukes

1 INSTI

1 booster

new drug, 1 tablet qd

first line tx in tx naive 

Term
Describe Truvada
Definition

HIV med

2 nukes

1 tablet qd

not a sole med

Prophylactic

Term
Compare mutation rate between retroviri and DNA replicating cells
Definition
Retroviri replicates 1 million times more easily than DNA replicating cells
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