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Question 1
Incorrect
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A blood culture was performed from a sample taken from a patient. It was noted that a Gram-negative coccus organism was grown.Among the following microorganisms, which is considered an example of a Gram-negative coccus?
Your Answer: Escherichia coli
Correct Answer: Neisseria menigitidis
Explanation:Staphylococcus aureus = Gram-positive coccusBacillus cereus = Gram-positive bacillusCampylobacter jejuni = Gram-negative bacillusEscherichia coli = Gram-negative bacillusIn Gram staining, crystal violet is a purple stain that is used to stain the bacteria first. The stained bacteria are decolorized and then stained with a red stain, which is safranin. Bacteria with thick cell walls keep the purple stain and are called Gram-positive. Thin-walled bacteria are easily decolorized so when safranin, the red stain, is placed on the organisms, they become red or Gram-negative. Neisseria species appear as Gram-negative diplococci because they form pairs and their adjacent ends are flattened that is why they are also described to have a coffee-bean or kidney-bean shape.
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This question is part of the following fields:
- Microbiology
- Principles Of Microbiology
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Question 2
Incorrect
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Regarding hepatitis C, which of the following statements is INCORRECT:
Your Answer: Primary infection is often asymptomatic.
Correct Answer: Anti-HCV IgG antibodies are diagnostic of acute infection.
Explanation:Anti-HCV IgG antibodies indicate exposure to hepatitis C but this could be acute, chronic or resolved infection. If the antibody test is positive, HCV RNA should be tested for, which if positive indicates that a person has current infection with active hepatitis C.
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This question is part of the following fields:
- Microbiology
- Pathogens
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Question 3
Incorrect
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A 72-year-old woman presents to your clinic with worsening oedema. She is a known case of ischaemic heart disease and heart failure.You decide to add a loop diuretic to her current drug regime to control the oedema. Of the following, what is a contraindication to using a loop diuretic?
Your Answer: Hypotension
Correct Answer: Anuria
Explanation:Loop diuretics are drugs used to manage and treat fluid overload associated with CHF, liver cirrhosis, and renal disease. The drugs commonly used are:FurosemideBumetanideTorsemideEthacrynic AcidLoop diuretics inhibit the Na-K-Cl pump in the ascending loop of Henle, resulting in salt-water excretion. This relieves congestion and reduces oedema. The contra-indications to the use of loop diuretics are:1. Anuria2. Comatose and precomatose states associated with liver cirrhosis3. Renal failure due to nephrotoxic or hepatotoxic drugs4. Severe hypokalaemia5. Severe hyponatremia6. History of hypersensitivity to furosemide, bumetanide, or torsemide (or sulphonamides)The following conditions or states are not contraindications, but loop diuretics needs to be used cautiously in these conditions:1. Diabetes (but hyperglycaemia less likely than with thiazides)2. Gout3. Hypotension (correct before initiation of treatment)4. Hypovolaemia (Correct before initiation of treatment)
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This question is part of the following fields:
- Cardiovascular Pharmacology
- Pharmacology
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Question 4
Incorrect
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You examine a 79-year-old woman who has had hypertension and atrial fibrillation in the past. Her most recent blood tests show that she has severe renal impairment.Which medication adjustments should you make in this patient's case?
Your Answer: Stop atenolol
Correct Answer: Reduce dose of digoxin
Explanation:Digoxin is excreted through the kidneys, and impaired renal function can lead to elevated digoxin levels and toxicity.The patient’s digoxin dose should be reduced in this case, and their digoxin level and electrolytes should be closely monitored.
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This question is part of the following fields:
- Cardiovascular Pharmacology
- Pharmacology
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Question 5
Incorrect
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A 29-year-old woman with anaphylactic reaction to peanuts, had to use her EpiPen on the way to hospital. What percentage of patients with anaphylactic reaction suffer a biphasic response?.
Your Answer: 10%
Correct Answer: 20%
Explanation:About 20% of patients that suffer an anaphylactic reaction suffer a biphasic response 4-6 hours after the initial response (sometimes up to 72 hours after).
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This question is part of the following fields:
- General Pathology
- Pathology
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Question 6
Incorrect
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Which of the following statements concerning the facial nerve is INCORRECT?
Your Answer:
Correct Answer: Forehead sparing in facial nerve palsy is indicative of a lower motor neuron lesion.
Explanation:In facial nerve palsy, LMN damage will involve the forehead and there will be an inability to close the eyes due to paralysis of the orbicularis oculi or raise the eyebrows due to paralysis of the occipitofrontalis muscle.UMN damage causes sparing of the forehead as the occipitofrontalis and orbicularis oculi muscles have bilateral cortical representation.
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This question is part of the following fields:
- Anatomy
- Cranial Nerve Lesions
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Question 7
Incorrect
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You review the arterial blood gas (ABG) of a patient with lactic acidosis.Which SINGLE statement regarding lactic acidosis is true?
Your Answer:
Correct Answer: Type A lactic acidosis is typically due to tissue hypoxia
Explanation:Lactic acidosis is defined as a pH 5 mmol/L. It is a common finding in critically ill patients and is often associated with other serious underlying pathologies. The anion gap is raised in lactic acidosis.There are major adverse consequences of severe acidaemia, which affect all body systems, and there is an associated increase in mortality of critically ill patients with a raised lactate. The mortality associated with lactic acidosis despite full supportive treatment remains at 60-90%.Acquired lactic acidosis is classified into two subtypes:Type A is due to tissue hypoxiaType B is due to non-hypoxic processes affecting the production and elimination of lactateLactic acidosis can be extreme after a seizure but usually resolves spontaneously within a few hours.Left ventricular failure typically results in tissue hypoperfusion and a type A lactic acidosis.Some causes of type A and type B lactic acidosis are shown below:Type A lactic acidosisType B lactic acidosisShock (including septic shock)Left ventricular failureSevere anaemiaAsphyxiaCardiac arrestCO poisoningRespiratory failureSevere asthma and COPDRegional hypoperfusionRenal failureLiver failureSepsis (non-hypoxic sepsis)Thiamine deficiencyAlcoholic ketoacidosisDiabetic ketoacidosisCyanide poisoningMethanol poisoningBiguanide poisoning
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This question is part of the following fields:
- Physiology
- Renal Physiology
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Question 8
Incorrect
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All of the following predisposes to lithium toxicity in patients taking long-term therapy EXCEPT:
Your Answer:
Correct Answer: Hypernatraemia
Explanation:A common complication of long term lithium therapy results in most cases of lithium intoxication. It is caused by reduced excretion of the drug which can be due to several factors including deterioration of renal function, dehydration, hyponatraemia, infections, and co-administration of diuretics or NSAIDs or other drugs that may interact.
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This question is part of the following fields:
- Central Nervous System
- Pharmacology
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Question 9
Incorrect
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A 22 year old male has been stabbed and is brought to the ED with a stab wound to his upper limb. On examination, the patient is unable to flex the distal interphalangeal joints of the ring and little finger. However, the proximal interphalangeal joint is intact. The most likely affected nerve is which of the following, and at which level is this occurring?
Your Answer:
Correct Answer: Ulnar nerve at elbow
Explanation:The medial half of the flexor digitorum profundus is innervated by the ulnar nerve. Paralysis of this muscle results in loss of flexion at the distal interphalangeal joint of the ring and little finger. Flexion at the proximal interphalangeal joint is preserved as this is a function of the flexor digitorum superficialis which is innervated by the median nerve. The ulnar nerve is not correct as ulnar nerve injury at the wrist would not affect the long flexors, and the injury must have been more proximal.
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This question is part of the following fields:
- Anatomy
- Upper Limb
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Question 10
Incorrect
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How is measles primarily transmitted:
Your Answer:
Correct Answer: Respiratory droplet route
Explanation:Measles belongs to the paramyxoviridae group of viruses. The incubation period is 7-18 days (average 10) and it is spread by airborne or droplet transmission. The classical presentation is of a high fever with coryzal symptoms and photophobia with conjunctivitis often being present. The rash that is associated is a widespread erythematous maculopapular rash. Koplik spots are pathognomonic for measles, and are the presence of white lesions on the buccal mucosa.Differential diagnoses would include:RubellaRoseola infantum (exanthem subitom)Scarlet feverKawasaki diseaseErythema infectiosum (5thdisease)EnterovirusInfectious mononucleosisDiagnosis can be confirmed by the following means:Salivary swab for measles specific IgMSerum sample for measles specific IgMSalivary swab for RNA detectionPossible complications include:Otitis mediaFebrile convulsionsPneumoniaBronchiectasisDiarrhoeaMeningitisEncephalitisImmunosuppressionSubacute sclerosing panencephalitisDeath
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This question is part of the following fields:
- Microbiology
- Pathogens
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Question 11
Incorrect
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A 63 year old lady presents to ED with a persistent cough and red currant jelly sputum. She has a history of chronic alcohol abuse and has an X-ray which demonstrates a cavitating pneumonia. The most likely causative pathogen is:
Your Answer:
Correct Answer: Klebsiella pneumoniae
Explanation:One of the results of Klebsiella pneumoniae is pneumonia that is usually a very severe infection. It is characterised by thick, bloody sputum (red currant jelly sputum), and is associated with complications like lung abscess, cavitation, necrosis, empyema and pleural effusions.
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This question is part of the following fields:
- Infections
- Microbiology
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Question 12
Incorrect
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Regarding chemical control of respiration, which of the following statements is INCORRECT:
Your Answer:
Correct Answer: The blood-brain barrier is freely permeable to HCO3 - ions.
Explanation:CSF is separated from the blood by the blood-brain barrier. This barrier is impermeable to polar molecules such as H+and HCO3-but CO2can diffuse across it easily. The pH of CSF is therefore determined by the arterial PCO2and the CSF HCO3-and is not affected by blood pH.
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This question is part of the following fields:
- Physiology
- Respiratory
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Question 13
Incorrect
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Which of the following is an example of discrete data:
Your Answer:
Correct Answer: Number of children
Explanation:Discrete data is quantitative data that can only take whole numerical values e.g. number of children, number of days missed from work.
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This question is part of the following fields:
- Evidence Based Medicine
- Statistics
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Question 14
Incorrect
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Intravenous glucose solutions are typically used in the treatment of all of the following situations except:
Your Answer:
Correct Answer: Hypokalaemia
Explanation:In hypokalaemia, initial potassium replacement therapy should not involve glucose infusions, as glucose may cause a further decrease in the plasma-potassium concentration. Glucose infusions are used for the other indications like diabetic ketoacidosis, hypoglycaemia, routine fluid maintenance in patients who are nil by mouth (very important in children), and in hyperkalaemia.
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This question is part of the following fields:
- Fluids And Electrolytes
- Pharmacology
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Question 15
Incorrect
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A 54-year-old woman presents with polyuria and polydipsia. She is known to suffer from bipolar disorder, which has been well controlled by the use of lithium for many years.What is the SINGLE most likely diagnosis?
Your Answer:
Correct Answer: Nephrogenic diabetes insipidus
Explanation:Diabetes insipidus is the inability to produce concentrated urine. It is characterised by the presence of excessive thirst, polyuria and polydipsia. There are two distinct types of diabetes insipidus:Cranial (central) diabetes insipidus and;Nephrogenic diabetes insipidusCranial diabetes insipidus is caused by a deficiency of vasopressin (anti-diuretic hormone). Patients with cranial diabetes insipidus can have a urine output as high as 10-15 litres per 24 hours, but adequate fluid intake allows most patients to maintain normonatraemia. 30% of cases are idiopathic, and a further 30% are secondary to head injuries. Other causes include neurosurgery, brain tumours, meningitis, granulomatous disease (e.g. sarcoidosis) and drugs, such as naloxone and phenytoin. A very rare inherited form also exists that is associated with diabetes mellitus, optic atrophy, nerve deafness and bladder atonia.Nephrogenic diabetes insipidus is caused by renal resistance to the action of vasopressin. As with cranial diabetes insipidus, urine output is markedly elevated. Serum sodium levels can be maintained by secondary polydipsia or can be elevated. Causes of nephrogenic diabetes insipidus include chronic renal disease, metabolic disorders (e.g. hypercalcaemia and hypokalaemia) and drugs, including long-term lithium usage and demeclocycline.In view of the history of long-term lithium use, in this case, nephrogenic diabetes insipidus is the most likely diagnosis.
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This question is part of the following fields:
- Physiology
- Renal Physiology
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Question 16
Incorrect
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You're currently treating an infection in a patient and trying to figure out which antibiotic would be best.Which of the following antimicrobial drugs inhibits the formation of cell walls?
Your Answer:
Correct Answer: Cefuroxime
Explanation:Cefuroxime and other cephalosporin antibiotics are bactericidal ß-lactam antibiotics. They work similarly to penicillins in that they prevent cross-linking between the linear peptidoglycan polymer chains that make up the bacterial cell wall. As a result, they prevent the formation of cell walls.The following is a summary of the various mechanisms of action of various types of antimicrobial agents:1) Inhibition of cell wall synthesisPenicillinsCephalosporinsVancomycin2) Disruption of cell membrane functionPolymyxinsNystatinAmphotericin B3) Inhibition of protein synthesisMacrolidesAminoglycosidesTetracyclinesChloramphenicol4) Inhibition of nucleic acid synthesisQuinolonesTrimethoprim5-nitroimidazolesRifampicin5) Anti-metabolic activitySulphonamidesIsoniazid
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This question is part of the following fields:
- Infections
- Pharmacology
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Question 17
Incorrect
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A patient presents with a fever, headache and neck stiffness. A CSF sample of someone with meningococcal meningitis typically shows:
Your Answer:
Correct Answer: All of the above
Explanation:CSF analysis typically shows: cloudy turbid appearanceraised WCC – predominantly neutrophilshigh proteinlow glucose (typically < 40% of serum glucose)Gram-negative diplococci seen under microscopy
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This question is part of the following fields:
- Microbiology
- Pathogens
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Question 18
Incorrect
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A patient is sent in by her GP with suspected ectopic pregnancy. Tubal ectopic pregnancies occur most commonly in which part of the uterine tube:
Your Answer:
Correct Answer: Ampulla
Explanation:Ectopic pregnancy most commonly occurs in the ampulla (70% of cases).
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This question is part of the following fields:
- Abdomen
- Anatomy
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Question 19
Incorrect
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A 22-year-old man arrives at the emergency department with a sore throat, low-grade fever, and malaise. His partner has infectious mononucleosis, which was recently diagnosed. In this situation, which of the following cells is the most proliferative:
Your Answer:
Correct Answer: Lymphocytes
Explanation:Histologic findings in EBV infectious mononucleosis: Oropharyngeal epithelium demonstrates an intense lymphoproliferative response in the cells of the oropharynx. The lymph nodes and spleen show lymphocytic infiltration primarily in the periphery of a lymph node.Relative lymphocytosis (≥ 60%) plus atypical lymphocytosis (≥ 10%) are the characteristic findings of Epstein Barr virus (EBV) infectious mononucleosis.
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This question is part of the following fields:
- Immune Responses
- Pathology
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Question 20
Incorrect
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You are about to give an antimuscarinic agent to a 55 year-old male patient. Which of the following conditions will make you with stop the administration, since it is a contraindication to antimuscarinic agents?
Your Answer:
Correct Answer: Prostatic enlargement
Explanation:Antimuscarinic medications may impair the contractility of bladder smooth muscle, resulting in acute urine retention in men with BPH, and should be avoided or used with caution.
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This question is part of the following fields:
- Gastrointestinal
- Pharmacology
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Question 21
Incorrect
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Which of the following body location is the appropriate site to apply pressure when performing a carotid sinus massage?
Your Answer:
Correct Answer: Thyroid cartilage
Explanation:The common carotid artery runs through the neck and divides into internal and external carotid arteries on both sides near the upper thyroid cartilage. In emergency situations, carotid sinus massage is also used to diagnose or treat paroxysmal supraventricular tachycardia. During the procedure, to maximize access to the carotid artery, the patient is put in a supine position with the neck extended (i.e. elevating the chin away from the chest). The carotid sinus is normally positioned inferior to the angle of the jaw, near the arterial impulse, at the level of the thyroid cartilage. For 5 to 10 seconds, pressure is administered to one carotid sinus. Although pulsatile pressure applied in a vigorous circular motion may be more effective, continuous pressure is preferred since it is more reproducible. If the predicted reaction is not obtained, the operation is repeated on the opposite side after a one- to two-minute wait.
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This question is part of the following fields:
- Anatomy
- Head And Neck
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Question 22
Incorrect
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A suspicious growth on the posterior tongue of a 40-year-old man was discovered by his dentist and was immediately referred for possible oral cancer. The lymph from the posterior tongue will drain to which of the following nodes?
Your Answer:
Correct Answer: Deep cervical nodes
Explanation:Lymph from the medial anterior two thirds of the tongue travels to the deep cervical lymph nodes.Lymph from the lateral anterior tongue goes to the submandibular nodes.
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This question is part of the following fields:
- Anatomy
- Head And Neck
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Question 23
Incorrect
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A 38-year-old woman presented to the emergency room after an incident of slipping and falling onto her back and left hip. Upon physical examination, it was noted that she has pain on hip flexion, but normal hip adduction. Which of the following muscles was most likely injured in this case?
Your Answer:
Correct Answer: Sartorius
Explanation:The hip adductors are a group of five muscles located in the medial compartment of the thigh. These muscles are the adductor longus, adductor brevis, adductor magnus, gracilis, and pectineus.The hip flexors consist of 5 key muscles that contribute to hip flexion: iliacus, psoas, pectineus, rectus femoris, and sartorius.
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This question is part of the following fields:
- Anatomy
- Lower Limb
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Question 24
Incorrect
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Which of the following statements accurately describes the flexor digitorum superficialis muscle?
Your Answer:
Correct Answer: It flexes the middle phalanges of the medial four fingers at the proximal interphalangeal joints
Explanation:Flexor digitorum superficialis is the largest muscle of the anterior compartment of the forearm. It belongs to the superficial flexors of the forearm, together with pronator teres, flexor carpi radialis, flexor carpi ulnaris and palmaris longus. Some sources alternatively classify this muscle as an independent middle/intermediate layer of the anterior forearm, found between the superficial and deep groups.Flexor digitorum superficialis is innervated by muscular branches of the median nerve, derived from roots C8 and T1 that arises from the medial and lateral cords of the brachial plexus. The skin that overlies the muscle is supplied by roots C6-8 and T1.The primary arterial blood supply to the flexor digitorum superficialis is derived from the ulnar artery and its anterior recurrent branch. In addition to branches of the ulnar artery, the anterior and lateral surfaces of the muscle are supplied by branches of the radial artery; and its posterior surface also receives branches from the median artery.The main function of flexor digitorum superficialis is flexion of the digits 2-5 at the proximal interphalangeal and metacarpophalangeal joints. Unlike the flexor digitorum profundus, flexor digitorum superficialis has independent muscle slips for all four digits. This allows it to flex the digits individually at their proximal interphalangeal joints. In addition, flexor digitorum superficialis aids the aids flexion of the wrist.
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This question is part of the following fields:
- Anatomy
- Upper Limb
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Question 25
Incorrect
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You review a 34-year-old man with lower back pain and plan to prescribe him ibuprofen and codeine phosphate. His only past medical history of note is depression, for which he takes fluoxetine.Which of the following scenarios would prompt you to consider the co-prescription of a PPI for gastro-protection? Select ONE answer only.
Your Answer:
Correct Answer: Co-prescription of fluoxetine
Explanation:Patients at risk of gastro-intestinal ulceration (including the elderly) who need NSAID treatment should receive gastroprotective treatment. The current recommendations by NICE suggest that gastro-protection should be considered if patients have ≥1 of the following:Using maximum recommended dose of an NSAIDAged 65 or olderHistory of peptic ulcer or GI bleedingConcomitant use of medications that increase risk:Low dose aspirinAnticoagulantsCorticosteroidsAnti-depressants including SSRIs and SNRIsRequirements for prolonged NSAID usage:Patients with OA or RA at any ageLong-term back pain if older than 45It is suggested that if required, either omeprazole 20 mg daily or lansoprazole 15-30 mg daily should be the PPIs of choice.This patient is on 400 mg of ibuprofen TDS, but the maximum recommended dose of ibuprofen is 2.4 g daily. Co-prescription of codeine, raised BMI, and a family history of peptic ulceration would also not prompt gastro-protection.
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This question is part of the following fields:
- Musculoskeletal Pharmacology
- Pharmacology
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Question 26
Incorrect
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Bordetella pertussis is spread via which of the following routes:
Your Answer:
Correct Answer: Respiratory droplet route
Explanation:Bordetella pertussis is a Gram negative coccobacillus that causes whooping cough. B. pertussis is spread via the respiratory droplet route and expresses fimbriae that aid their adhesion to the ciliated epithelium of the upper respiratory tract, and produce a number of exotoxins, causing the characteristic thickened bronchial secretions, paralysis of cilia and lymphocytosis.
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This question is part of the following fields:
- Microbiology
- Pathogens
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Question 27
Incorrect
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A 18 year old with known asthma presents himself to ED with acute breathlessness and wheeze for the past 20 minutes. On examination he is tachypneic and tachycardic. His oxygen saturations are 96% on air. What is the first line treatment for acute asthma:
Your Answer:
Correct Answer: Salbutamol
Explanation:High-dose inhaled short-acting beta2-agonists are the first line treatment for acute asthma(salbutamol or terbutaline). Oxygen should only been given to hypoxaemic patients (to maintain oxygen saturations of 94 – 98%). A pressurised metered dose inhaler with spacer device is preferred in patients with moderate to severe asthma (4 puffs initially, followed by 2 puffs every 2 minutes according to response, up to 10 puffs, whole process repeated every 10 – 20 minutes if necessary). The oxygen-driven nebuliser route is recommended for patients with life-threatening features or poorly responsive severe asthma (salbutamol 5 mg at 15 – 30 minute intervals). Continuous nebulisation should be considered in patients with severe acute asthma that is poorly responsive to initial bolus dose (salbutamol at 5 – 10 mg/hour) The intravenous route should be reserved for those in whom inhaled therapy cannot be used reliably.
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This question is part of the following fields:
- Pharmacology
- Respiratory
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Question 28
Incorrect
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Regarding loop diuretics, which of the following statements is INCORRECT:
Your Answer:
Correct Answer: The risk of hypokalaemia is greater with loop diuretics than with an equipotent dose of a thiazide diuretic.
Explanation:Hypokalaemia can occur with both thiazide and loop diuretics. The risk of hypokalaemia depends on the duration of action as well as the potency and is thus greater with thiazides than with an equipotent dose of a loop diuretic. Hypokalaemia is dangerous in severe cardiovascular disease and in patients also being treated with cardiac glycosides. Often the use of potassium-sparing diuretics avoids the need to take potassium supplements. In hepatic failure, hypokalaemia caused by diuretics can precipitate encephalopathy, particularly in alcoholic cirrhosis.
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This question is part of the following fields:
- Cardiovascular
- Pharmacology
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Question 29
Incorrect
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You've been summoned to your Emergency Department resuscitation area to see a patient. You consider giving him an atropine shot because he is severely bradycardic.Which of the following statements about the use of atropine is correct?
Your Answer:
Correct Answer: It blocks the effects of the vagus nerve on both the SA and AV nodes
Explanation:At muscarinic receptors, atropine blocks the action of the parasympathetic neurotransmitter acetylcholine. As a result, it inhibits the vagus nerve’s effects on both the SA and AV nodes, increasing sinus automaticity and facilitating AV node conduction.At muscarinic receptors, atropine blocks the action of the parasympathetic neurotransmitter acetylcholine. As a result, it inhibits the vagus nerve’s effects on both the SA and AV nodes, increasing sinus automaticity and facilitating AV node conduction.The most common cause of asystole during cardiac arrest is primary myocardial pathology, not excessive vagal tone, and there is no evidence that atropine is helpful in the treatment of asystole or PEA. As a result, it is no longer included in the ALS algorithm’s non-shockable section. Atropine is most commonly used in the peri-arrest period. It is used to treat bradycardia (sinus, atrial, or nodal) or AV block when the patient’s haemodynamic condition is compromised by the bradycardia.If any of the following adverse features are present, the ALS bradycardia algorithm recommends a dose of 500 mcg IV:ShockSyncopeMyocardial ischaemiaHeart failureAtropine is also used for the following purposes:Topically as a cycloplegic and mydriatic to the eyesTo cut down on secretions (e.g. in anaesthesia)Organophosphate poisoning is treated withAtropine’s side effects are dose-dependent and include:Mouth is parchedVomiting and nauseaVision is hazyRetention of urineTachyarrhythmiasIt can also cause severe confusion and hallucinations in patients, especially the elderly.
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This question is part of the following fields:
- Cardiovascular Pharmacology
- Pharmacology
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Question 30
Incorrect
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The least likely feature of anaemia is:
Your Answer:
Correct Answer: Narrow pulse pressure
Explanation:Non-specific signs of anaemia include: 1. pallor of mucous membranes or nail beds (if Hb < 90 g/L), 2. tachycardia3. bounding pulse4. wide pulse pressure5. flow murmurs 6. cardiomegaly 7. signs of congestive cardiac failure (in severe cases)
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This question is part of the following fields:
- Haematology
- Pathology
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