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Davidsons 1000 MCQs

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Exam of 147 pages for the course med111 at A university (Davidsons 1000 MCQs)

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,MCQs VIA WEB 2005

Medicine MCQS VIA Web
Copyright © 2005 Elsevier Limited. All rights reserved. Fleshandbones is a registered
trademark of Harcourt, Inc. in the United States and other jurisdictions, used under license

These mcqs were donloaded By Ahmed Hakim
TEST
Module4
Question 1. The pulse:
(a) In pulsus paradoxus the rate slows during inspiration. (False)
(b) Pulsus alternans indicates a poorly functioning left ventricle. (True)
(c) A tachycardia of 150 beats per minute in a resting patient usually implies an underlying cardiac arrhythmia. (True)
(d) A collapsing pulse may be noticed in thyrotoxicosis. (True)
(e) Corrigan's sign supports a diagnosis of aortic stenosis. (False)

Question 2. Heart murmurs:
(a) A low rumbling diastolic murmur with presystolic accentuation may be heard in mitral stenosis accompanied by
atrial fibrillation. (False)
(b) Causes of a pansystolic murmur include mitral regurgitation and ventricular septal defect. (True)
(c) A systolic murmur heard over the whole praecordium associated with a thrill usually indicates aortic stenosis.
(True)
(d) Left heart murmurs are best heard during expiration. (True)
(e) An early blowing diastolic murmur at the left sternal edge indicates aortic incompetence. (True)

Question 3. Pulsus paradoxus:
(a) The volume of the pulse increases in inspiration. (False)
(b) Can be confirmed by detecting >10 mmHg difference in systolic pressure during the breathing cycle. (True)
(c) Is a sign of severe asthma. (True)
(d) Is called paradoxus because it is the opposite of what normally happens to the pulse. (False)
(e) Can occur in cardiac tamponade. (True)

Question 4. The jugulovenous pressure:
(a) Is raised if it is 2 cm from the sternal angle with the patient seated at 45°. (False)
(b) Tall 'a' waves may be seen in pulmonary hypertension. (True)
(c) Irregular cannon waves indicate complete heart block. (True)
(d) Regular cannon waves may indicate a nodal rhythm. (True)
(e) Giant 'v' waves and a pulsatile liver indicate tricuspid stenosis. (False)

Question 5. The physical signs of an uncomplicated large pneumothorax include:
(a) The trachea deviated to the opposite side. (False)
(b) A clicking sound synchronous with the heart beat. (True)
(c) Symmetrical expansion of the chest. (False)
(d) Increased breath sounds over the pneumothorax. (False)
(e) Increased percussion note over the pneumothorax. (True)

Question 6. The following would help distinguish between a kidney and a spleen in the left upper quadrant:
(a) Dull to percussion over the mass. (False)
(b) A well-localized notched lower margin. (False)
(c) Moves with respiration. (False)
(d) A ballottable mass. (True)
(e) A family history of renal failure. (True)

Question 7. Nystagmus:
(a) Vertical nystagmus usually indicates a lesion of the medulla oblongata. (False)
(b) Horizontal nystagmus is usually ipsilateral to an irritative lesion of the labyrinth. (False)
(c) Ataxic nystagmus indicates a lesion of the medial longitudinal bundle. (True)
(d) May be absent in a lesion of the cerebellar vermis (the central part). (True)


By A. H.

,MCQs VIA WEB 2005
(e) Pendular nystagmus may indicate partial blindness. (True)

Question 8. The following would suggest an upper rather than a lower motor neuron lesion:
(a) Fasciculation. (False)
(b) Increased tone. (True)
(c) An absent plantar reflex. (False)
(d) Clonus. (True)
(e) Relatively little wasting. (True)

Question 9. Hand signs:
(a) Clubbing may be caused by uncomplicated chronic bronchitis. (False)
(b) Koilonychia usually indicates liver disease. (False)
(c) Osler's nodes and Heberden's nodes both occur in osteoarthritis. (False)
(d) Splinter haemorrhages are due to embolic rather than immunological phenomena. (False)
(e) Psoriatic arthritis affects most joints in the hand but usually spares the distal interphalangeal (DIP) joints. (False)
(True)

Question 10. The face:
(a) A malar flush may indicate mitral valve disease or hypothyroidism. (True)
(b) A butterfly rash in the face is seen in dermatomyositis. (False)
(c) Bell's palsy can cause ptosis due to paralysis of orbicularis oculi. (False)
(d) Herpes labialis may be associated with pneumococcal pneumonia. (True)
(e) An expressionless face and drooling could indicate Parkinson's disease. (True)

Question 11. The electrocardiogram:
(a) The PR interval is measured from the peak of the P wave to the start of the QRS complex. (False)
(b) Right axis deviation is indicated by a QRS axis of -35°. (False)
(c) Q waves in S-II, S-III and aVf indicate a transmural inferior myocardial infarction. (True)
(d) Left bundle branch block is suggested by broadening of the QRS complex to 0.10 seconds (two and a half little
squares), and positive RSR' waves in V4-V6. (False)
(e) P mitrale is suggested by a P wave taller than 2.5 mm. (False)

Question 12. In the full blood count:
(a) A haemoglobin of 10.0 g/dL would be considered normal in a premenopausal woman. (False)
(b) Polycythaemia rubra vera is usually indicated by elevation not only of the haemoglobin but also of the white cell
count and platelets. (True)
(c) A low platelet count could indicate a flare-up of systemic lupus erythematosus (SLE). (True)
(d) High platelets can be seen in gastrointestinal bleeding. (True)
(e) A raised mean corpuscular volume is usual in significant alcohol excess. (True)

Question 13. Heart failure:
(a) The clinical features of left heart failure include: tachycardia, basal crepitations, pulsus alternans and a raised JVP.
(False)
(b) Congestion of the pulmonary veins alone does not result in orthopnoea. (False)
(c) Chronic congestive heart failure leads to secondary hyperaldosteronism. (True)
(d) Causes of heart failure include ischaemic heart disease, hypertension, and thiamine deficiency. (True)
(e) Clinical features of right heart failure include a raised JVP, ankle oedema, and hepatomegaly. (True)

Question 14. Stroke:
(a) Cerebral haemorrhage accounts for more than 40% of acute strokes. (False)
(b) In supratentorial strokes with homonymous hemianopsia, patients cannot see on the hemiplegic side. (True)
(c) Vertigo, vomiting, dysphagia, and Horner's syndrome indicate occlusion of the vertebrobasilar circulation. (True)
(d) Pinpoint pupils and bilateral upgoing plantars could signal a brainstem stroke. (True)
(e) Carotid endarterectomy should be considered for patients with more than 70% stenosis because this is more
effective than medical treatment. (True)

Question 15. Respiratory failure:


By A. H.

, MCQs VIA WEB 2005
(a) Type I failure results in a partial pressure of oxygen (pO2) <8 kPa and a partial pressure of carbon dioxide (pCO2)
of >6.5 kPa. (False)
(b) In respiratory failure associated with chronic bronchitis, the level of carbon dioxide (CO2) determines the
respiratory rate. (False)
(c) Respiratory failure as defined in (a) would be an indication for ventilation in pure asthma. (True)
(d) Doxapram is a respiratory stimulant used in respiratory failure associated with chronic obstructive pulmonary
disease. (True)
(e) The main aim in type II failure is to keep the pO2 >7.0 kPa without worsening of the acidosis or pCO2. (True)

Question 16. Cushing's syndrome:
(a) May give rise to hypertension, diabetes, and truncal obesity. (True)
(b) Is usually diagnosed by estimation of the urinary free cortisol followed by an overnight dexamethasone suppression
test. (True)
(c) Could be associated with pigmentation. (True)
(d) The most common cause is probably iatrogenic. (True)
(e) Nelson's syndrome is a complication of bilateral adrenalectomy for pituitary-dependent Cushing's disease. (True)


Question 17. Leukaemia:
(a) The common presenting triad is infection, bleeding, and fatigue. (True)
(b) Acute myeloid leukaemia (AML) may result spontaneously or follow on from CML, polycythaemia rubra vera or
myelosclerosis. (True)
(c) The usual development of chronic lymphocytic leukaemia is a transformation to acute lymphoblastic leukaemia.
(False)
(d) A platelet count of 40 × 109/L would not normally give rise to spontaneous bleeding. (True)
(e) Bone marrow transplantation is a recognized treatment for AML. (True)

Question 18. Hypertension:
(a) An average diastolic blood pressure of >90 mmHg over prolonged observation is an indication for drug treatment in
uncomplicated hypertension. (False)
(b) Thiazide diuretics are the least effective antihypertensive drugs. (False)
(c) Thiazide diuretics work on the loop of Henle in the kidney. (False)
(d) Resistant hypertension is defined as a failure to control the blood pressure adequately with a good three-drug
regimen. (True)
(e) Thiazide diuretics are contraindicated in gout and diabetes. (True)

Question 19. Oral corticosteroids:
(a) Are an effective treatment for SLE. (True)
(b) In the long term may cause cataracts. (True)
(c) Should be avoided in sarcoidosis because they induce pulmonary oedema. (False)
(d) May be stopped abruptly after 2 weeks of 40 mg prednisolone daily in patients who are not exposed to repeated
courses. (True)
(e) May reveal that 15% of patients labelled as having chronic bronchitis, in fact have reversible airways disease.
(True)

Question 20. Paracetamol overdose:
(a) Ipecacuana followed by oral methionine is effective for most patients who are just over the treatment line. (False)
(b) Can cause renal failure. (True)
(c) Intravenous N-acetylcysteine frequently causes anaphylaxis. (False)
(d) The serum paracetamol level is of most value between 1 and 4 hours after ingestion. (False)
(e) In co-proxamol (distalgesic) overdose, sudden death is likely to be due to hypoglycaemia caused by paracetamol.
(False)

Question 21. Treatment of myocardial infarction:
(a) Aspirin and streptokinase are more effective than either alone after myocardial infarction. (True)
(b) Thrombolysis improves short-term complications but not mortality after myocardial infarction. (False)



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