MCQ's Flashcards

(52 cards)

1
Q

Mutation in humans which means they don’t feel pain

A

SCN9A. Nav 1.7 voltage gated sodium channel mutations in the alpha subunit

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2
Q

newer cox 2 drugs

A

Less bleeding as GI tract and platelets have mainly COX 1, Less nephrotic, increase risk of MI and stroke

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3
Q

Codeine is less effective in some people

A

Minimal enzyme in some people

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4
Q

Step 2: weak opioids/ non opioids, NSAID

A

codeine, opioids, tramadol, nefopram

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5
Q

Step 3: severe pain

A

Strong opioids; morphine, fentanyl patch (transdermal)

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6
Q

How long can you sedate someone for

A

2 hours

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7
Q

General anesthetic patients are unconscious which means

A

Unarousability and loss of protective reflexes, potential for aspiration, obstruction and nerve damage due to prolonged pressure

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8
Q

Steps of GA

A

induction, secure airway, maintenance, emergencelit

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9
Q

Hyper IgM immunodeficient is a B cell deformity , and mutation sin CD40 mean that

A

class switching cant occur - where IgM turns into IgG so this cant happen

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10
Q

IgA deficiency is the most common deficiency

A

1 in 700 caucasions. Its the failure in terminal differentiation of B cells to plasma cells. Individual develop a type 3 deficiency

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11
Q

no Btk = no B cell maturation and no IgG

A

You require multiple injections of gammaglobulin

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12
Q

pemphigus is a type 2 reaction and is against

A

against gap junctions

You have autoantibodies again desmoglien 1 and 3

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13
Q

Pemphigoid is against

A

Hemidesmosomes, prevents binding of epithelial with dermis at the basement membrane

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14
Q

SCID severe combined immunodeficiency

A

T cell deficiency but affects B cells too
Candida infections are common
defective IL‐2R gene
common in men

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15
Q

Di George

A

Defiency in your T cells. Wide spread eyes, low set eyes, upper lip shortened, abnormal aorta

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16
Q

MHC II Deficiency

A

Failure to express MHC II antigens on APC. Lack of CD4 cells

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17
Q

Hereditary Angioneurotic Edema

A

most common Complement deficiency. Recurrent swelling

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18
Q

Defects in phagocytes that can be fatal

A

CGD chronic granulatomus disease - phagocytes cant form superoxides. To dx: cant reduce nitroblue tetrazoliium ( ) NBT dye
Leukocytes adhesion deficiency

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19
Q

LAD type 1

LAD type 2

A

CD18 deficiency

CD15

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20
Q

secondary immunodeficiency

A

Drugs, nutrition, burns, viruses

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21
Q

Corticoids causes what to blood

A

Lymphocytopenia
Monocytopenia
Neutrophilia

22
Q

Chemo: cyclophosphamide

A

activated in the body, it cross-links DNA to stop cell proliferation and increase apoptosis

23
Q

Azathioprine

A

converted to 6-mercaptopurine in the body and then metabolised to thiosinic acid

24
Q

Pyrimidine

A

Inhibition of thyidylate synthesis 5fu

25
HIV
Monitor CD4 count by Flow cytometry
26
Kaposi sarcoma
Tumour of endothelial cells
27
Affinity
Binding strength between epitope and antibody binding
28
In monoclonal antibodies production what is used to produce hybridomas
Polyethene glycol (antifreeze)
29
In the wells in Monoclonal antibody production, what is put
HAT, hypoxanthine, aminopterin, thymidine
30
A titre
of an AB is defined as the lowest dilution of the sample that retains a detectable activity
31
Test for influenzas
Hemagglutination inhibition test | If anti haemogluttin ABs are produced - they will sink, if not they will agglutinate
32
Strep bacteria are detected by Antistreptolysin test
if pt serum has Ab to O toxin it will neutralise O toxin and stop it lysing RBC
33
ELISA
Ag, Ab, or proteins
34
In HIV, pts the number of CD4 cells means, if they are low
Its progressed to AIDS
35
EC50
Drug conc required to produce 50% max effect
36
Potency
How much is required to Produce the effect
37
Efficacy
Relationship between receptor occupancy and ability to initate response
38
LA blocks what
Na channels
39
NSAIDS block
COX 1 AND 2 (Cyclo-oxygenase)
40
Benzodiazepines/ barbiturates
binds to GABA and facilitate action of Cl channels
41
PPI inhibitors
block H+/ K+ ATPase
42
Metrondizaole
Inhibits DNA synthesis
43
Bioavailability
fraction of unchanged drug reaching systemic circulation
44
Acidic drugs bind to
Albumin
45
Basic drugs bind to
alpha 1 acid glycoprotein
46
Perfusion
Time to reach conc equilibrium between blood and tissue is only limited by blood flow
47
Phase 1
Conjugated, oxidised to metabolite, renally excreted in urine, catalysed by P450
48
Phase II
attach an endogenous molecule (glucouronide/sulphate/acetyl)
49
Eyrthromycin
inhibits activaction of Cytochrome 3A4 = high levels of quetiapine
50
Step 1
mild - mod; non-opioids, nerve block Moderate to severe: weak opioids, analgesics Strong opioids
51
Paracetamol
Inhibits prostaglandin synthesis. | Overdose: N-acetyl - cysteine
52
Reverse codeine/morphine
Naloxone