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Question 1
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An 80-year-old man presents to the emergency department with a headache on the right side of his head. The pain is concentrated in his right temple and worsens when he moves his jaw. He reports no changes in vision or focal neurological symptoms. The patient has a medical history of polymyalgia rheumatica. A temporal artery biopsy is scheduled to confirm the diagnosis. What is the next best course of action in managing this patient?
Your Answer: Immediate oral prednisolone
Explanation:When temporal arthritis is suspected, glucocorticoids should be administered immediately without waiting for a temporal artery biopsy. This condition, also known as giant cell arthritis, typically presents with a localized headache in the temporal region and jaw claudication. It is strongly associated with polymyalgia rheumatica. Prompt treatment is essential as temporal arthritis is a medical emergency that can lead to serious complications. Oral prednisolone is the recommended treatment in the absence of vision changes. Analgesia alone is not sufficient, and waiting for biopsy results can cause unnecessary delays in treatment. IV methylprednisolone is only indicated if there are changes in vision. Oral dexamethasone is not recommended as there is limited evidence on its efficacy for giant cell arthritis. Therefore, prednisolone is the preferred first-line treatment.
Temporal arthritis, also known as giant cell arthritis, is a condition that affects medium and large-sized arteries and is of unknown cause. It typically occurs in individuals over the age of 50, with the highest incidence in those in their 70s. Early recognition and treatment are crucial to minimize the risk of complications, such as permanent loss of vision. Therefore, when temporal arthritis is suspected, urgent referral for assessment by a specialist and prompt treatment with high-dose prednisolone is necessary.
Temporal arthritis often overlaps with polymyalgia rheumatica, with around 50% of patients exhibiting features of both conditions. Symptoms of temporal arthritis include headache, jaw claudication, and tender, palpable temporal artery. Vision testing is a key investigation in all patients, as anterior ischemic optic neuropathy is the most common ocular complication. This results from occlusion of the posterior ciliary artery, leading to ischemia of the optic nerve head. Fundoscopy typically shows a swollen pale disc and blurred margins. Other symptoms may include aching, morning stiffness in proximal limb muscles, lethargy, depression, low-grade fever, anorexia, and night sweats.
Investigations for temporal arthritis include raised inflammatory markers, such as an ESR greater than 50 mm/hr and elevated CRP. A temporal artery biopsy may also be performed, and skip lesions may be present. Treatment for temporal arthritis involves urgent high-dose glucocorticoids, which should be given as soon as the diagnosis is suspected and before the temporal artery biopsy. If there is no visual loss, high-dose prednisolone is used. If there is evolving visual loss, IV methylprednisolone is usually given prior to starting high-dose prednisolone. Urgent ophthalmology review is necessary, as visual damage is often irreversible. Other treatments may include bone protection with bisphosphonates and low-dose aspirin.
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This question is part of the following fields:
- Musculoskeletal
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Question 2
Incorrect
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A 30-year-old woman presents with deteriorating hearing during pregnancy. There is no known family history of hearing loss. Upon examination, the tympanic membrane appears intact and pure tone audiometry indicates a conductive hearing loss with a Carhart notch.
What is the most probable location of the issue?Your Answer: Malleus
Correct Answer: Stapes
Explanation:Understanding Otosclerosis: Diagnosis and Treatment Options
Otosclerosis is a common autosomal dominant disorder that causes a conductive hearing loss, which typically worsens during pregnancy. The condition is caused by the fixation of the stapes bone in the ear, and it exhibits incomplete penetrance, meaning it can skip generations, and there may not be a positive family history of the condition.
Diagnosis of otosclerosis is typically made through examination findings and audiometry results. The Carhart notch, a dip seen on bone conduction audiometry, is a sign that is classically associated with otosclerosis. However, the tympanic membrane is unlikely to be the site of abnormality as it is mentioned that the tympanic membrane is intact on examination.
Treatment options for otosclerosis include amplification with hearing aids and medical treatment with sodium fluoride, which slows progression. Surgery, such as stapedectomy or stapedotomy, is becoming more popular and effective.
It is important to understand the diagnosis and treatment options for otosclerosis to effectively manage the condition and improve quality of life for those affected.
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This question is part of the following fields:
- ENT
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Question 3
Correct
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A 30-year-old man presents with left scrotal discomfort and a feeling of tightness. Upon examination, there is mild swelling of the left scrotum with varices resembling a bag of worms in the overlying skin that appears dark red. Scrotal ultrasound confirms the presence of a varicocele on the left side. Which structure is most likely dilated in this patient?
Your Answer: Pampiniform plexus
Explanation:Anatomy of the Male Reproductive System
The male reproductive system is a complex network of organs and structures that work together to produce and transport sperm. Here are some key components of this system:
Pampiniform Plexus: This network of veins runs along the spermatic cord and drains blood from the scrotum. When these veins become dilated, it can result in a condition called varicocele, which may cause a bag of worms sensation in the scrotum.
Ductus Deferens: This tube-like structure is part of the spermatic cord and carries sperm and seminal fluid from the testis to the ejaculatory duct.
Processus Vaginalis: This structure can sometimes be present in the groin area and may communicate with the peritoneum. When it does, it can lead to a condition called hydrocele, where fluid accumulates in the scrotum.
Testicular Artery: This artery originates from the abdominal aorta and supplies blood to the testis. It is not involved in the formation of varicocele.
Genital Branch of the Genitofemoral Nerve: This nerve provides sensation to the skin in the upper anterior part of the scrotum and innervates the cremaster muscle. It is not involved in the formation of varicocele.
Understanding the anatomy of the male reproductive system can help in identifying and treating various conditions that may affect it.
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This question is part of the following fields:
- Urology
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Question 4
Correct
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A 60-year-old diabetic arrives at the Emergency Department complaining of severe abdominal pain. The pain started suddenly and he has been experiencing bloody diarrhoea for the past six hours. Despite his discomfort, his physical examination does not reveal any significant findings. The patient has a notable medical history, having previously suffered a myocardial infarction that necessitated the placement of a pacemaker.
What test is most likely to confirm a diagnosis of mesenteric ischemia?Your Answer: Abdominal computed tomography (CT)
Explanation:Diagnostic Imaging Techniques for Mesenteric Ischaemia
Mesenteric ischaemia is a condition that occurs when there is a lack of blood flow to the intestines, which can lead to serious complications. There are several diagnostic imaging techniques that can be used to identify mesenteric ischaemia, including abdominal computed tomography (CT), abdominal ultrasound, abdominal X-ray, colonoscopy, and magnetic resonance angiography (MRA).
Abdominal CT is often the first-line investigation used to rule out other causes and can identify signs of mesenteric ischaemia, such as gas in the intestinal wall and portal vein. Abdominal ultrasound is not useful in assessing bowel lesions but may indicate perforation and free fluid in the abdomen. Abdominal X-ray findings are non-specific and may not be helpful in narrowing down the differential. Colonoscopy can be helpful in looking at mucosal lesions of the bowel but carries a risk of perforation. MRA can be useful in assessing vascular pathology but is not recommended for patients with pacemakers.
In conclusion, a combination of diagnostic imaging techniques may be necessary to accurately diagnose mesenteric ischaemia and determine the appropriate treatment plan.
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This question is part of the following fields:
- Colorectal
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Question 5
Correct
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A 25-year-old African woman has an open appendicectomy. Eight months later, she is examined for an unrelated issue. During abdominal examination, it is observed that the wound area is covered by shiny dark raised scar tissue that extends beyond the boundaries of the skin incision. What is the most probable underlying process?
Your Answer: Keloid scar
Explanation:Keloid scars surpass the boundaries of the initial cut.
Understanding the Stages of Wound Healing
Wound healing is a complex process that involves several stages. The type of wound, whether it is incisional or excisional, and its level of contamination will affect the contributions of each stage. The four main stages of wound healing are haemostasis, inflammation, regeneration, and remodeling.
Haemostasis occurs within minutes to hours following injury and involves the formation of a platelet plug and fibrin-rich clot. Inflammation typically occurs within the first five days and involves the migration of neutrophils into the wound, the release of growth factors, and the replication and migration of fibroblasts. Regeneration occurs from day 7 to day 56 and involves the stimulation of fibroblasts and epithelial cells, the production of a collagen network, and the formation of granulation tissue. Remodeling is the longest phase and can last up to one year or longer. During this phase, collagen fibers are remodeled, and microvessels regress, leaving a pale scar.
However, several diseases and conditions can distort the wound healing process. For example, vascular disease, shock, and sepsis can impair microvascular flow and healing. Jaundice can also impair fibroblast synthetic function and immunity, which can have a detrimental effect on the healing process.
Hypertrophic and keloid scars are two common problems that can occur during wound healing. Hypertrophic scars contain excessive amounts of collagen within the scar and may develop contractures. Keloid scars also contain excessive amounts of collagen but extend beyond the boundaries of the original injury and do not regress over time.
Several drugs can impair wound healing, including non-steroidal anti-inflammatory drugs, steroids, immunosuppressive agents, and anti-neoplastic drugs. Closure of the wound can be achieved through delayed primary closure or secondary closure, depending on the timing and extent of granulation tissue formation.
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This question is part of the following fields:
- Surgery
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Question 6
Incorrect
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A 19-year-old man is suffering from acne vulgaris, with inflamed, open comedones on his face, chest and neck. What micro-organism degrades sebum to produce inflammatory fatty acids in such cases?
Your Answer: Staphylococcus aureus
Correct Answer: Propionibacterium acnes
Explanation:Common Skin Infections and their Causes
Acne vulgaris is a prevalent skin condition among adolescents and young adults, particularly men. Hormonal changes stimulate the sebaceous glands to produce more sebum, leading to the formation of open comedones, which are inflamed follicles with a central dark plug of keratin. Propionibacterium acnes is responsible for breaking down complex lipids in sebum into free fatty acids, which cause inflammation of hair follicles. Treatment with antibiotics and 13-cis-retinoic acid can alleviate the symptoms of acne vulgaris.
Molluscum contagiosum is caused by the poxvirus, which leads to epidermal hyperplasia and ellipsoid molluscum bodies in the stratum corneum.
Impetigo is a bacterial infection of the skin caused by Staphylococcus aureus. It is highly contagious and often affects healthy children. The infection starts as a reddened macule and progresses to multiple serum-filled pustules that rupture and form a yellowish crust.
Papillomavirus causes warts or verrucae, which are common on the hands. They appear as several papules with a rough, irregular surface.
Tinea versicolor is caused by Malassezia furfur, a fungus that causes superficial fungal infections in the skin. Other forms of tinea are also caused by fungal infections.
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This question is part of the following fields:
- Dermatology
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Question 7
Incorrect
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A 16-year-old girl who is eight weeks pregnant undergoes a surgical termination of pregnancy and reports feeling fine a few hours later. What is the most frequent risk associated with a TOP?
Your Answer: Haemorrhage
Correct Answer: Infection
Explanation:This condition is rare, but it is more common in pregnancies that have exceeded 20 weeks of gestation.
Termination of Pregnancy in the UK
The UK’s current abortion law is based on the 1967 Abortion Act, which was amended in 1990 to reduce the upper limit for termination from 28 weeks to 24 weeks gestation. To perform an abortion, two registered medical practitioners must sign a legal document, except in emergencies where only one is needed. The procedure must be carried out by a registered medical practitioner in an NHS hospital or licensed premise.
The method used to terminate a pregnancy depends on the gestation period. For pregnancies less than nine weeks, mifepristone (an anti-progesterone) is administered, followed by prostaglandins 48 hours later to stimulate uterine contractions. For pregnancies less than 13 weeks, surgical dilation and suction of uterine contents is used. For pregnancies more than 15 weeks, surgical dilation and evacuation of uterine contents or late medical abortion (inducing ‘mini-labour’) is used.
The 1967 Abortion Act outlines the circumstances under which a person shall not be guilty of an offence under the law relating to abortion. These include if two registered medical practitioners are of the opinion, formed in good faith, that the pregnancy has not exceeded its 24th week and that the continuance of the pregnancy would involve risk, greater than if the pregnancy were terminated, of injury to the physical or mental health of the pregnant woman or any existing children of her family. The limits do not apply in cases where it is necessary to save the life of the woman, there is evidence of extreme fetal abnormality, or there is a risk of serious physical or mental injury to the woman.
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This question is part of the following fields:
- Gynaecology
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Question 8
Incorrect
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A 44-year-old man is being evaluated on the psychiatric ward due to a worsening of his mental health condition. Upon admission, the patient was diagnosed with a major depressive disorder accompanied by hallucinations.
Lately, the patient has been persistently expressing the belief that he is deceased. Consequently, he has ceased eating and displays obvious signs of self-neglect. The patient has no known medical conditions other than his mental health problems.
What is the name of the syndrome that this patient is experiencing?Your Answer: De Clérambault syndrome
Correct Answer: Cotard syndrome
Explanation:Cotard syndrome is a psychiatric disorder that is characterized by a person’s belief that they are dead or do not exist. This rare condition is often associated with severe depression or psychotic disorders and can lead to self-neglect and withdrawal from others. Treatment options include medication and electroconvulsive therapy.
Capgras syndrome is a delusional disorder where patients believe that a loved one has been replaced by an identical impostor. This condition is typically associated with schizophrenia, but it can also occur in patients with brain trauma or dementia.
Charles Bonnet syndrome is a visual disorder that affects patients with significant vision loss. These patients experience vivid visual hallucinations, which can be simple or complex. However, they are aware that these hallucinations are not real and do not experience any other forms of hallucinations or delusions.
De Clérambault syndrome, also known as erotomania, is a rare delusional disorder where patients believe that someone is in love with them, even if that person is imaginary, deceased, or someone they have never met. Patients may also perceive messages from their supposed admirer through everyday events, such as number plates or television messages.
Understanding Cotard Syndrome
Cotard syndrome is a mental disorder that is characterized by the belief that the affected person or a part of their body is dead or non-existent. This rare condition is often associated with severe depression and psychotic disorders, making it difficult to treat. Patients with Cotard syndrome may stop eating or drinking as they believe it is unnecessary, leading to significant health problems.
The delusion experienced by those with Cotard syndrome can be challenging to manage, and it can have a significant impact on their quality of life. The condition is often accompanied by feelings of hopelessness and despair, which can make it challenging for patients to seek help. Treatment for Cotard syndrome typically involves a combination of medication and therapy, but it can take time to find an effective approach.
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This question is part of the following fields:
- Psychiatry
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Question 9
Incorrect
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A 28-year-old man presents with a 5-day history of increasing pain, blurry vision and lacrimation in the left eye. He also feels a foreign body sensation in the affected eye. He has recently been swimming in an indoor swimming pool with his friends with his contact lenses on.
On examination, his visual acuity is 6/24 in the left and 6/6 in the right. The conjunctiva in the left is red. There is a white dot on the cornea, and with fluorescein, it shows an uptake in the centre of the cornea.
What is the most likely diagnosis?Your Answer: Corneal abrasion
Correct Answer: Microbial keratitis
Explanation:Differentiating Microbial Keratitis from Other Eye Infections
Microbial keratitis, specifically Acanthamoeba keratitis (AK), should be considered in patients who have been swimming with contact lenses. Symptoms include ocular pain, redness, blurred vision, light sensitivity, foreign body sensation, and excessive tearing. Ring-like stromal infiltrate and lid edema may also be present. AK is often confused with Herpes simplex keratitis in its early stages and with fungal keratitis or corneal ulcer in its advanced stages. Other potential eye infections, such as viral keratitis, corneal abrasion, corneal foreign body, and fungal keratitis, can be ruled out based on the patient’s history and risk factors.
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This question is part of the following fields:
- Ophthalmology
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Question 10
Incorrect
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A 42-year-old woman has a hysterectomy due to severe dysmenorrhoea after exhausting pharmacological options. Several months later, she experiences a vaginal vault prolapse and is referred to gynaecologists. What is the most appropriate surgical intervention for her?
Your Answer: Anterior colporrhaphy
Correct Answer: Sacrocolpopexy
Explanation:Sacrocolpopexy is the recommended treatment for vaginal vault prolapse. This surgical procedure involves suspending the vaginal apex to the sacral promontory, typically using the uterosacral ligaments for support. Other surgical options include anterior colporrhaphy for repairing a cystocele, vaginoplasty for reconstructing the vagina, vaginal hysterectomy for removing the uterus via the vagina, and bilateral oophorectomy for removing the ovaries. However, these options would not be appropriate for treating vaginal vault prolapse as the ovaries are not involved in the underlying pathology.
Understanding Urogenital Prolapse
Urogenital prolapse is a condition where one of the pelvic organs descends, causing protrusion on the vaginal walls. This condition is prevalent among postmenopausal women, affecting around 40% of them. There are different types of urogenital prolapse, including cystocele, cystourethrocele, rectocele, uterine prolapse, urethrocele, and enterocele.
Several factors increase the risk of developing urogenital prolapse, such as increasing age, vaginal deliveries, obesity, and spina bifida. The condition presents with symptoms such as pressure, heaviness, and a sensation of bearing down. Urinary symptoms such as incontinence, frequency, and urgency may also occur.
Treatment for urogenital prolapse depends on the severity of the condition. If the prolapse is mild and asymptomatic, no treatment may be necessary. Conservative treatment options include weight loss and pelvic floor muscle exercises. A ring pessary may also be used. In severe cases, surgery may be required. The surgical options for cystocele/cystourethrocele include anterior colporrhaphy and colposuspension. Uterine prolapse may require hysterectomy or sacrohysteropexy, while posterior colporrhaphy is used for rectocele.
In conclusion, urogenital prolapse is a common condition among postmenopausal women. It is important to understand the different types, risk factors, and treatment options available to manage the condition effectively.
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This question is part of the following fields:
- Gynaecology
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