Paper 3 MCQs

Question 1

The action of the following may be prolonged in patients with abnormal plasma cholinesterase:

a) prilocaine
b) atracurium
c) procaine
d) amethocaine
e) bupivacaine

Answer 1

FFTTF

Question 2

Glyceryl trinitrate:

a) increases pulmonary artery pressure
b) increases central venous pressure
c) produces bronchoconstriction
d) increases intracranial pressure
e) decreases cardiac preload

Answer 2

FFFTT

Question 3

Sulphonylureas:

a) displace bound insulin from pancreatic islet 13 cells
b) exert a hypoglycaemic effect which is antagonised by thiazides
c) correct ketosis
d) are extensively bound to proteins
e) include metoclopramide as an example

Answer 3

TTFTF

Question 4

All anaesthetic ethers:

a) are inflammable
b) are not metabolised in the body
c) contain a halogen
d) contain oxygen
e) are likely to cause arrhythmias

Answer 4

FFFTF

Question 5

Regarding a patient with severe burns:

a) dangerous rises is serum potassium may occur
b) a catabolic state exists for several days
c) an arm represents 9% of the body surface area
d) half of the fluid replacement should be given as blood
e) hyperglycaemia requiring insulin may occur

Answer 5

TTTFT

Question 6

Faulty positioning on the operating table may damage the following nerves:

a) trigeminal
b) radial
c) ulnar
d) lateral popliteal
e) obturator

Answer 6

FTTTF

Question 7

The following are recognised complications of transurethral resection of the prostate:

a) haemolysis
b) congestive cardiac failure
c) convulsions
d) hyponatraemia
e) hyperkalaemia

Answer 7

FTTTF

Question 8

Concerning postoperative myocardial infarction:

a) it is often silent
b) it has a lower mortality than in non-surgical patients
c) postponement of elective surgery should take place if a myocardial infarct has occurred within the last 2 years
d) it is associated with large intraoperative changes in blood pressure
e) it occurs most commonly within 24 hours of surgery

Answer 8

TFFTF

Question 9

The following are of use in the immediate management of an anaphylactic reaction to thiopentone:

a) intravenous fluids
b) 100% oxygen
c) adrenaline 0.2-0.6 mg intravenously
d) hydrocortisone 100 mg intravenously
e) chlorpheniramine 10 mg intramuscularly

Answer 9

TTTFF

Question 10

Regarding the innervation of the larynx:

a) the recurrent laryngeal nerve supplies the only abductors of the cords
b) the recurrent laryngeal nerve supplies sensory innervation to the whole larynx
c) the lingual surface of the epiglottis is innervated by the glossopharyngeal nerve
d) the internal laryngeal nerve is a branch of the vagus nerve
e) damage to one recurrent laryngeal nerve leads to life-threatening stridor

Answer 10

TFTTF

Question 11

The following increase the rate of inhalational induction of anaesthesia:

a) hyperventilation
b) hypotension
c) the second gas effect
d) an increase in dead-space
e) a high Hb concentration

Answer 11

TFTFF

Question 12

The following are features of Cushing’s syndrome:

a) hypokalaemia
b) osteoporosis
c) hypertension
d) peptic ulceration
e) muscle weakness

Answer 12

TTTTT

Question 13

Dysphoria may occur with:

a) pentazocine
b) droperidol
c) naloxone
d) ketamine
e) lorazepam

Answer 13

TTFTF

Question 14

The duration of non-depolarising neuromuscular blocking agents may be prolonged by:

a) acidosis
b) preoperative treatment with ecothiopate
c) hypothermia
d) hypercarbia
e) hypokalaemia

Answer 14

TFTTT

Question 15

Angina is a recognised feature of:

a) aortic stenosis
b) myxoedema
c) polyarteritis nodosa
d) anaemia
e) paroxysmal atrial tachycardia

Answer 15

TTTTT

Question 16

Severe V/Q abnormalities are associated with:

a) a small decrease in tidal volume
b) a rise in the (A-a) O2 difference
c) a major pulmonary embolus
d) a shift in the Hb-oxygen dissociation curve
e) an increase in the alveolar dead-space

Answer 16

FTTFT

Question 17

The following have blood:gas partition coefficients of < 2:

a) halothane
b) isoflurane
c) cyclopropane
d) trichlorethylene
e) nitrous oxide

Answer 17

FTTFT

Question 18

The management of life-threatening hyperkalaemia may include:

a) sodium bicarbonate intravenously
b) resonium orally
c) calcium intravenously
d) corticosteroids intravenously
e) dextrose and insulin intravenously

Answer 18

TTTFT

Question 19

Suxamethonium is contraindicated:

a) during the first 24 hours following major burns
b) in day-case anaesthesia
c) in patients with dystrophia myotonica
d) in patients with suspected epiglottitis
e) in the presence of autonomic neuropathy

Answer 19

FFTTF

Question 20

Prolonged vomiting over a 7-month period may lead to:

a) vitamin B12 deficiency
b) uraemia
c) hypokalaemia
d) hypochloraemia
e) tetany

Answer 20

FTTTT

Question 21

Regarding chlorpropamide:

a) it is a biguanide
b) its half-life is greater than 24 hours
c) it is used in type 1 diabetes
d) it prolongs the effects of warfarin
e) agranulocytosis is a complication of its use

Answer 21

FTFFT

Question 22

The following blood transfusions will result in agglutination:

Donor Recipient

a) O AB
b) B O
c) AB B
d) O A
e) B AB

Answer 22

FTTFF

Question 23

The following are safe in malignant hyperthermia:

a) suxamethonium
b) halothane
c) nitrous oxide
d) thiopentone
e) pancuronium

Answer 23

FFFTT

Question 24

Propranolol may cause:

a) congestive cardiac failure
b) bronchospasm
c) hyperglycaemia
d) tachycardia
e) retinal detachment

Answer 24

TTFFF

Question 25

Morphine: a) stimulates the chemoreceptor trigger zone b) is more lipid soluble than pethidine c) is a constituent of papaveretum d) causes significant depression of cardiac output e) may cause histamine release

Answer 25

TFTFT

Question 26

Isoprenaline: a) acts at beta 1 adrenoreceptors b) increases total peripheral vascular resistance c) is excreted unchanged in the urine d) produces bronchodilatation e) increases systemic blood pressure

Answer 26

TFFTF

Question 27

The critical temperature is: a) 273 K b) the temperature above which a gas cannot be liquified by pressure alone c) the temperature below which a gas does not vaporise d) 36.5 degrees C for nitrous oxide e) different if a substance is in a mixture rather than on its own

Answer 27

FTFTT

Question 28

Norepinephrine reduces heart rate by: a) the baroreceptor reflex b) coronary artery vasoconstriction c) effects on beta receptors d) increased cardiac output e) ganglion blockade

Answer 28

TFFFF

Question 29

A mixture of helium and oxygen compared with air: a) is less dense b) is more flammable c) is beneficial in asthma d) has an increased blood solubility coefficient e) is used to improve turbulent flow

Answer 29

TFFFT

Question 30

Suxamethonium: a) is metabolised in the blood b) is contraindicated in malignant hyperthermia c) is antagonised by neostigmine d) may cause hypokalaemia e) causes a transient rise in arterial blood pressure

Answer 30

TTFFT

Question 31

There is 100 mg of lidocaine in: a) 100 ml of 1% solution b) 1 ml of 10% solution c) 50 ml of 2% solution d) 20 ml of 5% solution e) 20 ml of 0.5% solution

Answer 31

FTFFT

Question 32

Angiotensin II: a) is produced in the lungs b) production is stimulated by renin c) production is stimulated by an increase in extracellular volume d) produces peripheral vasoconstriction e) is a mineralocorticoid

Answer 32

TTFTF

Question 33

Psychogenic hyperventilation in a normal person causes: a) a fall in the PaCO2 b) a rise in ionised plasma calcium c) a hydrogen ion concentration of 40 nmol/L d) a rise in the PaCO2 e) a rise in the PAO2

Answer 33

TFTFF

Question 34

Functional residual capacity: a) is measured by helium dilution b) is decreased in restrictive lung disease c) is decreased with an increase in airways resistance d) is approximately 1200 ml in a healthy adult e) is the volume at which closure of small airways occurs

Answer 34

TTFFF

Question 35

Blood group antigens: a) are on the outside of the haemoglobin b) have an autosomal inheritance pattern c) are present in group O patients d) are detectable in infants of less than 3-6 months of age e) may be detected in saliva

Answer 35

FTFTF

Question 36

The following cause delayed gastric emptying: a) trauma b) anxiety c) morphine d) metoclopramide e) ranitidine

Answer 36

TTTFF

Question 37

The following changes in liver physiology occur during normal pregnancy: a) increased globulin b) decreased albumin c) decreased cholesterol d) increased transaminase e) increased alkaline phosphatase

Answer 37

FTTFT

Question 38

Features of cor pulmonale secondary to longstanding emphysema include: a) anaemia b) an increased area of cardiac dullness c) mental confusion d) cold extremities e) a large "a" wave in the jugular venous pressure waveform

Answer 38

FTTFF

Question 39

Acute renal failure may be precipitated by: a) gentamicin b) overtransfusion c) endotoxin d) preoperative respiratory tract infection e) obstructive jaundice

Answer 39

TFTFT

Question 40

An increase in temperature increases: a) the vaporisation rate of volatile liquids b) blood viscosity c) the volume of a gas at constant pressure d) the solubility of a gas in a liquid e) the resistance of a thermocouple

Answer 40

TFTFF