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Question 1
Incorrect
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Regarding ampicillin, which of the following statements is CORRECT:
Your Answer: Ampicillin is a narrow spectrum antibiotic.
Correct Answer: Ampicillin may cause a widespread maculopapular rash in a patient with glandular fever.
Explanation:Ampicillin is a broad-spectrum antibiotic, active against certain Gram-positive and Gram-negative organisms but is inactivated by penicillinases (similar to amoxicillin in spectrum). Ampicillin is associated with high levels of resistance, therefore it is often not appropriate for blind treatment of infection. It is principally indicated for the treatment of exacerbations of chronic bronchitis and middle ear infections, both of which may be due to Streptococcus pneumoniae and H. influenzae, and for urinary tract infections.
Maculopapular rashes commonly occur with ampicillin (and amoxicillin) but are not usually related to true penicillin allergy. They almost always occur in patients with glandular fever; thus broad-spectrum penicillins should not be used for blind treatment of a sore throat. The risk of rash is also increased in patients with acute or chronic lymphocytic leukaemia or in cytomegalovirus infection.
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This question is part of the following fields:
- Infections
- Pharmacology
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Question 2
Incorrect
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You're evaluating a 37-year-old woman who is 12 weeks pregnant. She has experienced vaginal bleeding.
Which of the following anti-D statements is correct?Your Answer:
Correct Answer: Routine antenatal prophylaxis is recommended for RhD negative women at 28 and 34 weeks
Explanation:Anti-D is an IgG antibody that targets the antigen Rhesus D (RhD). Plasma from rhesus-negative donors who have been immunised against the anti-D-antigen is used to make anti-D immunoglobulin.
Only RhD negative women are given Anti-D Ig. Women who are RhD negative do not have the RhD antigen on their RBC. If a foetus has the RhD antigen (i.e. is RhD positive) and the mother is exposed to foetal blood, she may develop antibodies to RhD that pass through the placenta and attack foetal red cells (resulting in newborn haemolytic disease). Anti-D is given to bind and neutralise foetal red cells in the maternal circulation before an immune response is triggered. In the event of a sensitising event, 500 IU Anti-D Ig should be administered intramuscularly.
The following are examples of potentially sensitising events:
Birth
Haemorrhage during pregnancy
Miscarriage
Ectopic pregnancy
Death within the womb
Amniocentesis
Chorionic villus sampling
Trauma to the abdomenThe sooner anti-D is given in the event of a sensitising event, the better; however, it is most effective within 72 hours, and the BNF states that it is still likely to have some benefit if given outside of this time frame.
At 28 and 34 weeks, RhD negative women should receive routine antenatal prophylaxis. This is regardless of whether they have previously received Anti-D for a sensitising event during the same pregnancy.
Prophylactic anti-D is not necessary before 12 weeks gestation, as confirmed by scan, in uncomplicated miscarriage (where the uterus is not instrumented), or mild, painless vaginal bleeding, as the risk of foeto-maternal haemorrhage (FMH) is negligible. In cases of therapeutic termination of pregnancy, whether by surgical or medical means, 250 IU of prophylactic anti-D immunoglobulin should be given to confirmed RhD negative women who are not known to be RhD sensitised.
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This question is part of the following fields:
- Immunological Products & Vaccines
- Pharmacology
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Question 3
Incorrect
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Typically, granulomatous inflammation is associated with one of the following infections:
Your Answer:
Correct Answer: Tuberculosis
Explanation:Granulomatous inflammation is typically seen when an infective agent with a digestion-resistance capsule (e.g. Mycobacterium tuberculosis) or a piece of inert foreign material (such as suture or glass) is introduced into the tissue. A transient acute inflammatory response occurs and when this is ineffective in eradicating the stimulus, chronic inflammation occurs.
Tuberculosis is the prototype of the granulomatous diseases, but sarcoidosis, cat-scratch disease, lymphogranuloma inguinale, leprosy, brucellosis, syphilis, some mycotic infections, berylliosis, reactions of irritant lipids, and some autoimmune diseases are also included
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This question is part of the following fields:
- Inflammatory Responses
- Pathology
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Question 4
Incorrect
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A 23-year-old man is discovered to have an infection from Helicobacter pylori.
Which of the following types of cancer is mostly associated with Helicobacter pylori infection?Your Answer:
Correct Answer: Gastric cancer
Explanation:H. pylori is recognized as a major cause of type B gastritis, a chronic condition formerly associated primarily with stress and chemical irritants. In addition, the strong association between long-term H. pylori infection and gastric cancer has raised more questions regarding the clinical significance of this organism. There is speculation that long-term H. pylori infection resulting in chronic gastritis is an important risk factor for gastric carcinoma resulting in H. pylori being classified as a carcinogen.
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This question is part of the following fields:
- Microbiology
- Specific Pathogen Groups
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Question 5
Incorrect
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Regarding protein digestion, which of the following statements is CORRECT:
Your Answer:
Correct Answer: Oligopeptides are broken down into small peptides and amino acids by pancreatic carboxypeptidases and aminopeptidases located on the brush border.
Explanation:Digestion of dietary protein begins in the stomach where pepsin hydrolyses protein to polypeptides, and continues in the duodenum where pancreatic proteases (trypsin and chymotrypsin) continue the process of hydrolysis forming oligopeptides. These are further broken down into small peptides and amino acids by pancreatic carboxypeptidases and aminopeptidases located on luminal membrane epithelial cells. Free amino acids are absorbed across the apical membrane by secondary active transport coupled with Na+transport into the cell. Amino acids cross the basal membrane into the capillaries by facilitated diffusion.
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This question is part of the following fields:
- Gastrointestinal
- Physiology
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Question 6
Incorrect
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For a tachyarrhythmia caused by shock, which of the following is the first-line treatment:
Your Answer:
Correct Answer: Synchronised DC shock
Explanation:If there are any adverse symptoms, immediate cardioversion with synchronized DC shock is recommended. If cardioversion fails to stop the arrhythmia and the symptoms persist, amiodarone 300 mg IV over 10–20 minutes should be administered before attempting another cardioversion. The loading dosage of amiodarone is followed by a 24-hour infusion of 900 mg administered into a large vein.
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This question is part of the following fields:
- Cardiovascular
- Pharmacology
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Question 7
Incorrect
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A 20-year-old with type I diabetes mellitus has an episode of hypoglycaemia following inadvertent administration of too much insulin.
The mechanism by which insulin causes glucose to be transported into cells is?
Your Answer:
Correct Answer: Facilitated diffusion
Explanation:The only mechanism by which insulin facilitates uptake of glucose into cells is by facilitated diffusion through a family of hexose transporters.
The major transporter used for glucose uptake is GLUT4. GLUT4 is made available in the plasma membrane by the action of insulin.
When insulin concentrations are low, GLUT4 transporters are present in cytoplasmic vesicles, where they are cannot be used for transporting glucose. -
This question is part of the following fields:
- Endocrine Physiology
- Physiology
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Question 8
Incorrect
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A 42-year-old patient with worsening epigastric pain has been referred to you by a GP. The patient has been taking omeprazole for a month, but her symptoms are getting worse.
Which of the following is NOT a well-known side effect of proton pump inhibitor treatment?Your Answer:
Correct Answer: Pelvic fracture
Explanation:Proton pump inhibitors (PPIs) have a variety of side effects, including:
Vomiting and nausea
Pain in the abdomen
Flatulence
Diarrhoea
Constipation
HeadachePPIs have been linked to a significant increase in the risk of focal tachyarrhythmias (link is external).
Low serum magnesium and sodium levels have been linked to long-term use of PPIs, according to the US Food and Drug Administration (link is external).Long-term PPI use has also been linked to an increased risk of fracture, according to epidemiological evidence (link is external). Observational studies have discovered a slight link between hip, wrist, and spine fractures. However, there is no link between the two and an increased risk of pelvic fracture. For this reason, the MHRA recommends that patients at risk of osteoporosis who take PPIs maintain an adequate calcium and vitamin D intake.
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This question is part of the following fields:
- Gastrointestinal Pharmacology
- Pharmacology
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Question 9
Incorrect
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Which segment of the colon is most likely to be affected in diverticulitis?
Your Answer:
Correct Answer: Sigmoid colon
Explanation:Diverticulitis refers to inflammation and infection associated with a diverticulum and is estimated to occur in 10% to 25% of people with diverticulosis. Peridiverticular and pericolic infection results from a perforation (either macroscopic or microscopic) of a diverticulum, which leads to contamination, inflammation, and infection. The spectrum of disease ranges from mild, uncomplicated diverticulitis that can be treated in the outpatient setting, to free perforation and diffuse peritonitis that requires emergency laparotomy. Most patients present with left sided abdominal pain, with or without fever, and leucocytosis. The most common location for diverticulitis is the sigmoid colon.
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This question is part of the following fields:
- Abdomen And Pelvis
- Anatomy
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Question 10
Incorrect
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Carbamazepine is contraindicated in which of the following:
Your Answer:
Correct Answer: Atrioventricular block
Explanation:Carbamazepine is contraindicated in:
– People with known hypersensitivity to carbamazepine or structurally related drugs
– People with atrioventricular block (may suppress AV conduction and ventricular automaticity)
– People with a history of bone marrow depression (risk of agranulocytosis and aplastic anaemia)
– People with a history of acute porphyrias
– People taking a monoamine oxidase inhibitor (risk of serotonin syndrome) -
This question is part of the following fields:
- Central Nervous System
- Pharmacology
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Question 11
Incorrect
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A 25-year-old guy who has had a knee-high plaster cast on his left leg for the past 5 weeks arrives at the emergency department complaining of numbness on the dorsum of his left foot and an inability to dorsiflex or evert his foot. You know that his symptoms are due to fibular nerve compression. Where is the fibular nerve located?
Your Answer:
Correct Answer: Neck of fibula
Explanation:Dorsiflexion and eversion of the foot are innervated by the deep fibular nerve and the superficial fibular nerve, respectively.
The common fibular nerve runs obliquely downward along the lateral border of the popliteal fossa (medial to the biceps femoris) before branching at the neck of the fibula.
Thus, it is prone to being affected during an impact injury or fracture to the bone or leg. Casts that are placed too high can also compress the fibular nerve.
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This question is part of the following fields:
- Anatomy
- Lower Limb
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Question 12
Incorrect
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A patient is found to be anaemic. Which one of the following blood results would favour a diagnosis of anaemia of chronic disease rather than iron deficiency:
Your Answer:
Correct Answer: Low total iron binding capacity (TIBC)
Explanation:Anaemia of chronic disease is one of the most common causes of normocytic anaemia. The anaemia is usually mild (Hb > 90 g/L) and non-progressive. Anaemia of chronic disease is usually associated with low serum iron, low transferrin saturation, and a low total iron binding capacity (TIBC) with normal or raised ferritin which differentiates it from iron deficiency anaemia.
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This question is part of the following fields:
- Haematology
- Pathology
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Question 13
Incorrect
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Which of the following clinical features is a feature of a chronic extravascular haemolytic anaemia:
Your Answer:
Correct Answer: Gallstones
Explanation:Clinical features of haemolytic anaemia include:
Anaemia
Jaundice (caused by unconjugated bilirubin in plasma, bilirubin is absent from urine)
Pigment gallstones
Splenomegaly
Ankle ulcers
Expansion of marrow with, in children, bone expansion e.g. frontal bossing in beta-thalassaemia major
Aplastic crisis caused by parvovirus -
This question is part of the following fields:
- Haematology
- Pathology
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Question 14
Incorrect
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Which patient group are most commonly associated with infection with Klebsiella spp:
Your Answer:
Correct Answer: Hospitalised patients
Explanation:Klebsiella spp. are facultatively anaerobic Gram-negative rods, found in the normal intestinal and respiratory flora. These organisms are usually opportunistic pathogens that cause nosocomial infections, most commonly pneumonia and UTI.
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This question is part of the following fields:
- Microbiology
- Pathogens
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Question 15
Incorrect
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Regarding thalassaemia, which of the following statements is CORRECT:
Your Answer:
Correct Answer: Screening for thalassaemia in pregnancy is offered to all pregnant women.
Explanation:Beta thalassemia is caused by mutations in one or both of the beta globin genes. Alpha thalassemia is caused by a deletion or mutation (less commonly) in one or more of the four alpha globin gene copies. β-thalassaemia is more common in the Mediterranean region while α-thalassaemia is more common in the Far East.
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This question is part of the following fields:
- Haematology
- Pathology
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Question 16
Incorrect
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Which type of collagen is initially laid down in early wound healing:
Your Answer:
Correct Answer: III
Explanation:Fibroblasts migrate to the wound (about 2 – 5 days after wounding), proliferate and secrete extracellular matrix comprising mainly collagen (type III) and fibronectin to plug the gap.
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This question is part of the following fields:
- Pathology
- Wound Healing
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Question 17
Incorrect
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Loop diuretics primarily act on which Na+ transporter?
Your Answer:
Correct Answer: Na + /K + /2Cl - symporter
Explanation:The most potent diuretics are loop diuretics e.g. furosemide. They work by inhibiting the Na+/K+/2Cl-symporter in the thick ascending limb of the loop of Henle, which inhibits sodium, potassium, and chloride reabsorption. As a result, there is diuresis with loss of these electrolytes. There is a reduction in transcellular voltage difference, paracellular calcium and magnesium reabsorption.
The medullary interstitium becomes more concentrated by salt reabsorption in the ascending limb. Loop diuretics block this process and reduce the ability of the kidney to concentrate urine. In the collecting duct, there is increased sodium delivery to the principal cells, which increases potassium secretion in return for sodium reabsorption. -
This question is part of the following fields:
- Physiology
- Renal
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Question 18
Incorrect
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A patient with rash is examined. He has some redness of the skin that blanches when finger pressure is applied.
What is the best description of this rash that you have found on examination?Your Answer:
Correct Answer: Erythema
Explanation:Erythema is redness of the skin or mucous membranes caused by hyperaemia of superficial capillaries caused by skin injury, infection or inflammation. Erythema blanches when pressure is applied whereas ecchymosis, purpura and petechiae do not.
Ecchymosis are discolouration of the skin or mucous membranes caused by extravasation of blood. They are usually red or purple in colour and measure greater than 1 cm in diameter and do not blanch on applying pressure.
A macule is a flat, well circumscribed area of discoloured skin less than 1 cm in diameter with no changes in the thickness or texture of the skin.
Petechiae are discolouration of the skin measuring less than 3 mm in diameter
Purpura are discolouration of the skin measuring between 0.3 cm and 1 cm in diameter.
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This question is part of the following fields:
- General Pathology
- Pathology
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Question 19
Incorrect
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You are asked to review the blood results on a 56-year-old man who appears to be acutely unwell. His results show that he is neutropenic.
Which ONE of the following is NOT a recognized cause of a neutropenia?Your Answer:
Correct Answer: Hyposplenism
Explanation:Neutropenia is defined as a total neutrophil count of < 2.0 x 109/l.
It can be caused by:
Viral infections
Collagen disease e.g. SLE and RA
Chemotherapy and radiotherapy
Hypersplenism
Marrow infiltration
Vitamin and folate deficiency
Drug reactions
Drugs that cause neutropenia include flecainide, phenytoin, carbimazole, indomethacin and co-trimoxazole. -
This question is part of the following fields:
- Haematology
- Pathology
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Question 20
Incorrect
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Which of the following drug classes may cause bronchoconstriction:
Your Answer:
Correct Answer: Beta-blockers
Explanation:Beta-blockers, including those considered to be cardioselective, should usually be avoided in patients with a history of asthma, bronchospasm or a history of obstructive airways disease. However, when there is no alternative, a cardioselective beta-blocker can be given to these patients with caution and under specialist supervision. In such cases the risk of inducing bronchospasm should be appreciated and appropriate precautions taken.
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This question is part of the following fields:
- Cardiovascular
- Pharmacology
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Question 21
Incorrect
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A 40-year-old woman presents with a red, scaly, itchy rash around her navel that occurred after contact with a nickel belt buckle. A diagnosis of allergic contact dermatitis is made.
Which type of hypersensitivity reaction is this?Your Answer:
Correct Answer: Type IV hypersensitivity reaction
Explanation:A type IV hypersensitivity reaction occurred in this patient. Allergic contact dermatitis is an inflammatory skin reaction occurring in response to an external stimulus, acting either as an allergen or an irritant, caused by a type IV or delayed hypersensitivity reaction. They usually take several days to develop.
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This question is part of the following fields:
- General Pathology
- Pathology
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Question 22
Incorrect
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Which of the following nerves provides sensory innervation to the anteromedial and anterosuperior aspects of the external ear?
Your Answer:
Correct Answer: Auriculotemporal nerve
Explanation:Sensory innervation to the external ear is supplied by both cranial and spinal nerves. Branches of the trigeminal, facial, and vagus nerves (CN V, VII, X) are the cranial nerve components, while the lesser occipital (C2, C3) and greater auricular (C2, C3) nerves are the spinal nerve components involved. The lateral surface of the tympanic membrane, the external auditory canal, and the external acoustic meatus are all innervated by nervus intermedius (a branch of CN VII), the auriculotemporal nerve (CN V3), and the auricular branch of the vagus nerve. The concha receives split innervation from nervus intermedius, the auricular branch of the vagus nerve, and the greater auricular (spinal) nerve. Beyond the concha, the anteromedial and anterosuperior parts of the pinna are innervated by the auriculotemporal nerve, and a portion of the lateral helix by the lesser occipital nerve. The greater auricular nerve provides innervation to the area of the pinna inferolateral to the lobule.
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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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You examine a 72-year-old man who has recently begun bumetanide treatment for worsening heart failure.
Which of these statements about bumetanide is correct?Your Answer:
Correct Answer: It has better intestinal absorption than furosemide
Explanation:Bumetanide is a loop diuretic that is used to treat congestive heart failure. It is frequently used in patients who have failed to respond to high doses of furosemide.
It has a potency of about 40 times that of furosemide, with a 1 mg dose being roughly equivalent to a 40 mg dose of furosemide.
Seizures are not known to be triggered by bumetanide. In fact, it lowers the concentration of neuronal chloride, making GABA’s action more depolarizing, and it’s currently being tested as an antiepileptic in the neonatal period.It takes effect after 1 hour of oral administration, and diuresis takes 6 hours to complete.
Bumetanide absorbs much better in the intestine than furosemide. Because it has a higher bioavailability than furosemide, it is commonly used in patients with gut oedema.
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This question is part of the following fields:
- Cardiovascular Pharmacology
- Pharmacology
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Question 24
Incorrect
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Regarding haemophilia A, which of the following statements is INCORRECT:
Your Answer:
Correct Answer: In haemophilia both the APTT and PT are prolonged.
Explanation:Haemophilia A is the most common of the hereditary clotting factor deficiencies. The inheritance is sex-linked but up to one-third of patients have no family history and these cases result from recent mutation. The vast majority of cases are inherited in an X-linked recessive fashion, affecting males born to carrier mothers. Females born to affected fathers can also, rarely, be affected due to homozygosity for the gene, where there is marriage to close relatives.
The defect is an absence or low level of plasma factor VIII. The APTT is prolonged but the PT is normal. Recurrent painful haemarthroses and muscle haematomas dominate the clinical course of severely affected patients and if inadequately treated, lead to progressive joint deformity and disability. Local pressure can cause entrapment neuropathy or ischaemic necrosis. Prolonged bleeding occurs after dental extractions or post-trauma. Spontaneous haematuria and gastrointestinal haemorrhage may occur. The clinical severity of the disease correlates inversely with the factor VIII level. Operative and post-traumatic haemorrhage are life-threatening both in severely and mildly affected patients.
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This question is part of the following fields:
- Haematology
- Pathology
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Question 25
Incorrect
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A 20-year-old male patient lives in a travelling community and has never received any vaccinations. He presents to you with fever.
Which of these statements concerning indications and contraindications for vaccination is TRUE?
Your Answer:
Correct Answer: Inactivated vaccines are safe in pregnancy
Explanation:All vaccines are contraindicated in individuals with: A confirmed anaphylactic reaction to a previous dose of the vaccine or a vaccine containing the same antigens.
A confirmed anaphylactic reaction to a component in the vaccine e.g. neomycinThere is no evidence that vaccinating pregnant women with inactivated vaccine or toxoids harms the woman or foetus.
The current protocol is that a child with history of egg allergy can be safely vaccinated with Fluenz tetra. However, if they had a previous severe anaphylaxis to egg requiring intensive care, then Flenz tetra is contraindicated.
BCG, yellow fever or oral typhoid vaccinations are not safe in HIV positive patients.
The normal times recommended for immunization of full-term babies should also be applied to premature infants and correction for gestational age should not be implemented.
Concurrent antibiotic therapy is not a contraindication to vaccination.
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This question is part of the following fields:
- Microbiology
- Principles Of Microbiology
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Question 26
Incorrect
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A 42-year-old woman presents with face swelling prominently affecting her upper lip and hands. She has previously been diagnosed with hereditary angioedema.
Which of these is the most appropriate management option for this acute attack?Your Answer:
Correct Answer: Fresh frozen plasma
Explanation:Hereditary angioedema is inherited as an autosomal dominant disorder and is caused by deficiency of C1 esterase inhibitor, a protein that forms part of the complement system.
Attacks can be precipitated by stress and minor surgical procedures. Clinical features of hereditary angioedema include oedema of the skin and mucous membranes commonly affecting the face, tongue and extremities.
Angioedema and anaphylaxis due to a deficiency of C1 esterase inhibitor are resistant to adrenaline, steroids and antihistamines. Treatment is with fresh frozen plasma or C1 esterase inhibitor concentrate, which contains C1 esterase inhibitor.
Short-term prophylaxis for events that may precipitate angioedema attack is achieved with C1 esterase inhibitor or fresh frozen plasma infusions before the event while long-term prophylaxis can be achieved with antifibrinolytic drugs (tranexamic acid) or androgenic steroids.
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This question is part of the following fields:
- Pharmacology
- Respiratory Pharmacology
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Question 27
Incorrect
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Which of the following clinical features is most suggestive of a lesion of the temporal lobe:
Your Answer:
Correct Answer: Receptive dysphasia
Explanation:Damage to the Wernicke’s speech area in the temporal lobe can result in a receptive dysphasia. Hemispatial neglect is most likely to occur in a lesion of the parietal lobe. Homonymous hemianopia is most likely to occur in a lesion of the occipital lobe. Expressive dysphasia is most likely to occur in a lesion of the Broca speech area in the frontal lobe. Conjugate eye deviation towards the side of the lesion is most likely to occur in a lesion of the frontal lobe.
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This question is part of the following fields:
- Anatomy
- Central Nervous System
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Question 28
Incorrect
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A 20-year-old patient had sustained a supracondylar fracture due to falling from a skateboard. The frequency of acute nerve injuries accompanying supracondylar humeral fractures ranges from 10 to 20%. The most common complication is injury to which nerve?
Your Answer:
Correct Answer: Median nerve
Explanation:According to various studies, the frequency of acute nerve damage associated with supracondylar humeral fractures in children ranges from 10% to 20%.
Median nerve injury and anterior interosseous nerve injury are the most common consequences.
Damage to this nerve indicated weakening or abnormal extension of the index finger’s distal interphalangeal joint and the thumb’s interphalangeal joint. The absence of sensibility is a distinguishing attribute.
A surgical neck humerus fracture may cause injury to the axillary nerve. A midshaft humerus fracture might cause injury to the radial nerve. A medial epicondylar fracture might cause injury to the ulnar nerve.
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This question is part of the following fields:
- Anatomy
- Upper Limb
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Question 29
Incorrect
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Which of the following is NOT a typical feature of lithium toxicity:
Your Answer:
Correct Answer: Miosis
Explanation:Features of toxicity include:
Increasing gastrointestinal disturbances (vomiting, diarrhoea, anorexia)
Visual disturbances
Polyuria and incontinence
Muscle weakness and tremor
Tinnitus
CNS disturbances (dizziness, confusion and drowsiness increasing to lack of coordination, restlessness, stupor)
Abnormal reflexes and myoclonus
Hypernatraemia
With severe overdosage (serum-lithium concentration > 2 mmol/L) seizures, cardiac arrhythmias (including sinoatrial block, bradycardia and first-degree heart block), blood pressure changes, electrolyte imbalance, circulatory failure, renal failure, coma and sudden death may occur. -
This question is part of the following fields:
- Central Nervous System
- Pharmacology
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Question 30
Incorrect
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Which of the following is NOT a typical cerebellar sign:
Your Answer:
Correct Answer: Hypertonia
Explanation:Hypotonia means decreased muscle tone. It can be a condition on its own, called benign congenital hypotonia, or it can be indicative of another problem where there is progressive loss of muscle tone, such as muscular dystrophy or cerebral palsy. It is usually detected during infancy. Hypotonia is characteristic of cerebellar dysfunction.
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This question is part of the following fields:
- Anatomy
- Central Nervous System
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SESSION STATS - PERFORMANCE PER SPECIALTY
