Examplify Flashcards

1
Q

a patient presents with sigs of a chest infection and is coughing yellow sputum. You do not want to delay treatment. Which test will give you the best microbiological answer within the next 6 hours to help you choose the most appropriate Abx

A

gram stain sputum

doesn’t provide a specific organism but can make a good assumption

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2
Q

a 78yr old women presents to ~ED with a fever and acute confusion. Sepsis is suspected and the appropriate sepsis bundle initiated. With regards to sepsis this is….

A

identified doom observations and clinical features

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3
Q

between which vertebrae is a lumbar puncture performed?

A

L3/L4

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4
Q

which immune cells express the bacterial peptides pn MHC class II molecules

A

dendritic cells

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5
Q

what sort of bacteria does gentamicin work against?

A

gram negative

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6
Q

marker of muscle damage

A

creatine kinase

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7
Q

a 21 year old is admitted unconscious after attending a club. According to his friends he had taken ecstasy. The attached liver section shows features of

A

coagulative necrosis

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8
Q

carbon monoxide causes which type of hypoxia

A

histotoxic

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9
Q

what will occur to cells affected by the infarcation

A

influx of sodium and calicum

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10
Q

what will serum levels of calcium and phosphate be like in a pt with a calcified aortic valve

A

normal serum conc

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11
Q

heat shock proteins are present in

A

low concentrations in unstressed cells

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12
Q

the histology report describes the presence of Mallory’s hyaline within the hepatocytes. With which condition is this finding associated?

A

alcohol liver disease

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13
Q

what characteristic of clostridium allows it to survive outside of the host for long periods

A

spore formation

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14
Q

what type of bacteria is c.difficile

A

anaerobic bacteria

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15
Q

what antibiotic is prescribed for clostridium difficile infection

A

metronidazole

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16
Q

metronidazole is

A

active against anaerobic bacteria and also protozoan§

17
Q

what is the recommended treatment for MRSA infection

A

vancomycin given intravenously

18
Q

which cell is responsible for controlling HIV infection during the period where the pt remains clinically well

A

HIV specific CD8 T cell

19
Q

Acute HIV infection is characterised by the following

A

a flu like illness with mild rash

20
Q

how should you approach testing if a pt is HIV positive

A

use an opt-out approach following a discussion with the pt

21
Q

type of viral structure of HIV

A

single stranded RNA

22
Q

immunity against hep B is evidenced by the presence of adequate levels of

A

HbsAb

23
Q

why is staphylococcus epidermis good at adhering to the central line

A

it prodxcues a layer of slime that facilities adherence to prosthetic material such as central lines or intravenous catheters

24
Q

how and where is a murmur heard due to aortic stenosis

A

an ejection systolic murmur in the 2nd intercostal space on the right

25
Q

how and where is tricuspid regurgitation (incompetence) heard

A

systolic murmur in the left lower sternal border

26
Q

which mechanism of action of antibiotic is used to treat acute bacterial endocarditis

A

cell wall synthesis inhibitor

27
Q

antibody produced after first exposure

A

IgM

28
Q

antibody produced if virus has been previously encountered

A

IgG

29
Q

where are prostaglandins produced and in response to what

A

in the cell membrane phospholipids in response to acute inflammation

30
Q

which conditions are seen classically with alpha-1-antitrysin

A

emphysema and cirrhosis

31
Q

what accumulates within a blister

A

serous exudate

32
Q

in acute phase response of acute inflammation, which of the following proteins are produced by the liver in smaller amount than in the normal state

A

albumin

33
Q

how does a neutrophil move from the blood to the infected tissue

A

chemotaxis, margination, diapedesis and phagocytosis

34
Q

what occurs during acute inflammation

A

capillary hydrostatic pressure increases

35
Q

which chemical mediator is available immediately at the site of injury

A

histamine

36
Q

in which conditions is inflammation predominantly acute

A

lobar pneumonia

not
crohns, RA< sarcoidosis, TB (chronic)