EMCQ practice 3

Question 1

Drugs for treatment pulmonary hypertension

Answer 1

CCBs
Prostacyclin
Endothelin receptor antagonists

Question 2

MRSA mechanism beta lactam resistance

Answer 2

Penicillin binding proteins with low affinity for beta lactam abx

Question 3

Circadian rhythm bronchial tone

Answer 3

Constriction 6am
Dilation 6pm

Question 4

Caffeine/ theophylline induced diuresis

Answer 4

Decreases sodium reabsorption and inc gfr

Question 5

Ampicillin characteristics

Answer 5

Improved activity against gram -ve
Susceptible to beta lactamases

Question 6

Alveolar ventilation equation

Answer 6

(Tidal volume-anatomic dead space)* resp frequency

Question 7

Minute ventilation

Answer 7

TVxRR
does not account for dead space

Question 8

VWF function

Answer 8

Adhesion and aggregation
Main is adhesion

Question 9

P2Y12 receptor

Answer 9

Activated by ADP
Causes plt activation and adhesion

Question 10

Visual from posterior pole occipital lobe

Answer 10

Macula

Question 11

LGN lesion

Answer 11

Contralateral homonymous sectoranopia

Question 12

SG transudate

Answer 12

<1.012

Question 13

Selectins and integrins

Answer 13

Selectins neutrophil rolling
Integrin adhesions between neutrophils and endothelial cells

Question 14

Causes shoulder dislocation

Answer 14

Hyperextension and lateral rotation

Question 15

Dabigatran mechanism

Answer 15

Direct thrombin inhibitor

Question 16

Mechanism dipyridamole

Answer 16

Inhibits adenosine uptake and cGMP phosphodiesterase activity
Vasodilator with some antiplatelet action

Question 17

Strongest lateral ankle ligament

Answer 17

Posterior talofibular ligament

Question 18

Cause chronic gastritis without h pylori

Answer 18

Autoimmune atrophic gastritis
Less than 10% chronic

Question 19

Most common site peptic ulcer

Answer 19

1st part duodenum

Question 20

Nerve at distal end humerus

Answer 20

Median

Question 21

C fibre (pain) size

Answer 21

0.4-1.2

Question 22

Quickest food gets to sigmoid

Answer 22

12 hours

Question 23

Essential components thyroid hormone synth

Answer 23

Iodine
Ferritin
TSH

Question 24

Mortality legionella immunosuppressed

Answer 24

50%

Question 25

Location cholangiocarcinoma liver

Answer 25

Perihilar

Question 26

Size arteries in PE causing haemorrhage

Answer 26

Medium

Question 27

Bronchiectasis due to destruction of

Answer 27

Muscle and elastic tissue

Question 28

Paracetamol pk

Answer 28

F0.88
Not protein bound
Urine 3%

Question 29

Acid fast stain

Answer 29

TB

Question 30

PAO2
PaO2
SaO2

Answer 30

PAO2 lungs
PaO2 disolved arterial blood
SaO2 on Hb

Question 31

ADP function

Answer 31

Plt shape change and aggregation

Question 32

Haemochromatosis

Answer 32

Diabetes
Cirrhosis
Skin pigmentation
Cardiomyopathy
Arthritis q