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NEW QUESTION 31
A 55 year old woman is found to have clinical and biochemical features of cholestatic jaundice. You think her jaundice might be caused by one of her medications.
Which medication is the most likely cause of her jaundice?
- A. Phenytoin
- B. Thyroxine
- C. Co-amoxiclav
- D. Aspirin
- E. Paracetamol
Answer: C
NEW QUESTION 32
A patient presents with a fracture to the mid-clavicle after a fall The medial part of the clavicle is displaced superiorly Which muscle is most likely to cause this displacement?
- A. Platysma
- B. Sternocleidomastoid
- C. Pectoralis major
- D. Trapezius
- E. Scalenus anterior
Answer: C
NEW QUESTION 33
A 56 year old man presents with a spiral fracture of the humerus and wrist drop Which structure is most likely to be damaged?
- A. Axillary artery
- B. Ulnar nerve
- C. Musculocutaneous nerve
- D. Radial nerve
- E. Brachial artery
Answer: D
NEW QUESTION 34
A clinical pathway uses a predictive tool to guide use of diagnostic tests. Your patient has a high risk score, but a negative test They ask you how likely it is that they have the disease in question.
Which statistic are you most likely to use in your explanation?
- A. Likelihood ratio
- B. Post-test probability
- C. Sensitivity
- D. Negative predictive value
- E. Specificity
Answer: A
NEW QUESTION 35
A 35 year old man attends after a motorbike accident. He is complaining of abnormal vision and his right eye is slightly adducted when he looks straight ahead.
Which cranial nerve has suffered the most damage?
- A. Trigeminal
- B. Inferior division of oculomotor
- C. Trochlear
- D. Abducens
- E. Superior division of oculomotor
Answer: D
NEW QUESTION 36
A patient arrives with shortness of breath Their venous blood gas shows they have a low haemoglobin They have a past medical history of pernicious anaemia Which cells in the gastrointestinal tract are most likely to be attacked in this autoimmune condition1?
- A. Somatic
- B. Chief
- C. Epithelial
- D. Delta
- E. Parietal
Answer: E
NEW QUESTION 37
An 87 year old man is brought to the ED from his nursing home with loose stools and abdominal pain. You suspect Clostridium difficile infection because he had a recent course of antibiotics for pneumonia.
What measure is most likely to reduce the spread of infection to other patients?
- A. Treatment with metronidazole
- B. Hand washing with soap and water
- C. Wearing gloves and aprons for patient contact
- D. Isolation of the patient in a side room
- E. Use of alcohol hand gel
Answer: B
NEW QUESTION 38
A 57 year old man has had a myocardial infarction His coronary angiogram has shown a 50% decrease in the radius of the right coronary artery.
Which parameter is most likely to increase by a factor of 16 as a result?
- A. Blood flow
- B. Resistance
- C. Pressure gradient
- D. Capacitance
- E. Elasticity
Answer: B
NEW QUESTION 39
A 20 year old woman with known diabetes presents with hypoglycaemia She was given glucagon with good recovery. Which cells ot the pancreas normally secrete this hormone?
- A. Alpha
- B. Exocrine
- C. Gamma
- D. Beta
- E. Delta
Answer: A
NEW QUESTION 40
A 40 year old woman wilh a new diagnosis of type II diabetes has significant hyperglycaemia What is the most likely cause of her elevated blood glucose?
- A. Excessive glucocorticoid production
- B. Increased cellular resistance to insulin
- C. Reduced insulin production by pancreatic beta cells
- D. Reduced glucagon secretion
- E. Production of abnormal insulin
Answer: B
NEW QUESTION 41
A 33 year old man presents with signs of sepsis. A venous blood gas is taken which confirms an elevated haematocnt level What best describes the normal range of haematocnt you expect to find in a healthy male of this age?
- A. 40-49%
- B. 20-29%
- C. 50-59%
- D. 30-39%
- E. 10-19%
Answer: A
NEW QUESTION 42
A 25 year old man sustains a crush injury to his chest A CT scan reveals an oesophageal rupture as it passes through the diaphragm At which vertebral level is this injury most likely to have occurred?
- A. T7
- B. T9
- C. T8
- D. T11
- E. T10
Answer: C
NEW QUESTION 43
A 34 year old man presents wrth shortness of breath He has a normal alveolar-arterial <A-a) gradient What is the most likely diagnosis?
- A. Congestive cardiac failure
- B. Atelectasis
- C. Pulmonary thromboembolism
- D. Acute respiratory distress syndrome
- E. Neuromuscular disorder
Answer: E
NEW QUESTION 44
A 37 year old man is injured and has significant blood loss Following blood transfusion his systolic blood pressure increases from 70 to 100 Which physiological parameter is most likely to decrease in response?
- A. Pulmonary artery pressure
- B. Total peripheral resistance
- C. Cardiac output
- D. Right atrial pressure
- E. Stroke volume
Answer: B
NEW QUESTION 45
A 21 year old man with a history of epilepsy presents following a generalised seizure A deformity in his left shoulder was noted and an x-ray confirms a dislocation You plan to reduce the dislocation using midazolam for procedural sedation Sedation will occur as a result of mediation of which neurotransmitter?
- A. Gamma-aminobutyric acid
- B. Serotonin
- C. Dopamine
- D. Glutamate
- E. Acetylcholine
Answer: A
NEW QUESTION 46
A patient presents with septic shock A venous blood gas shows a metabolic acidosis Following treatment with crystalloid infusion and antibiotics their HR and BP are normal A repeat venous gas shows a persistent metabolic acidosis with a normal anion gap Which mechanism best explains the results of the repeat blood gas?
- A. Metabolic acidosis due to occult aspirin overdose
- B. Lactic acidosis due to tissue hypoperfusion
- C. Capillary leak due to sepsis causing continued hypovolamia
- D. Acute kidney injury due to reduced renal blood flow
- E. Hyperchloraemic acidosis due to excessive infusion of normal saline
Answer: E
NEW QUESTION 47
A 72 year old diabetic man develops an oculomotor nerve palsy.
Which clinical sign are you most likely to find?
- A. Deviation of the eye inferolaterally
- B. Increased lacrimation
- C. Absence of sweating on the face
- D. Absent corneal reflex
- E. Constriction of the pupil
Answer: A
NEW QUESTION 48
You are discussing the different muscles within the medial thigh and movements at the hip joint with a medical student. Which muscle within this compartment is most likely to be involved in hip extension?
- A. Adductor longus
- B. Adductor magnus
- C. Adductor brevis
- D. Gracilis
- E. Pectineus
Answer: B
NEW QUESTION 49
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