ENT Flashcards
<p>Define Bell’s palsy.</p>
<p>Bell's palsy is an acute unilateral peripheral facial nerve palsy in patients for whom physical examination and history are otherwise unremarkable, consisting of deficits affecting all facial zones equally that fully evolve within 72 hours.</p>
<p>Explain the aetiology/risk factors of Bell’s palsy.</p>
<p>Intranasal influenza infection</p>
<p>Pregnancy</p>
<p>Summarise the epidemiology of Bell’s palsy.</p>
<p>Bell's palsy is the most common aetiology of unilateral facial palsy among those 2 years of age or older. It is most prevalent in people between 15 and 45 years of age. The reported incidence is 23 to 32 cases per 100,000 per year.</p>
<p>Recognise the presenting symptoms of Bell’s palsy. Recognise the signs of Bell’s palsy on physical examination.</p>
<p>Facial drooping on one side<br></br>Absence of constitutional symptoms<br></br>Involvement of all nerve branches<br></br>Keratoconjunctivitis sicca<br></br>Pain<br></br>Synkinesis</p>
<p>What is keratoconjuctivitis sicca?</p>
<p>Keratoconjunctivitis sicca (dry eye) is common in Bell's palsy and occurs acutely due to loss of adequate blink function, with parasympathetic dysfunction to the lacrimal gland a contributing factor. It may lead to ulcerative keratitis (corneal ulcer) and subsequent blindness.</p>
<p>Identify appropriate investigations for Bell’s palsy and interpret the results.</p>
<p>Diagnosis can usually be made by examination. However, EMG may be used in order to test the tone of the facial muscles.</p>
<p>Generate a management plan for Bell’s palsy.</p>
<p>Prednisolone<br></br>Valaciclovir</p>
<p>Surgical intervention may be required in severe cases. Eye drops may also be given in order to stop the eyes from drying out.</p>
<p>Define BPPV.</p>
<p>Benign paroxysmal positional vertigo (BPPV) is a peripheral vestibular disorder that manifests as sudden, short-lived episodes of vertigo elicited by specific head movements. BPPV is one of the most common causes of vertigo. It is often self-limiting, but can become chronic and relapsing with considerable effects on a patient's quality of life.</p>
<p>Explain the aetiology/risk factors of BPPV.</p>
<p>Increasing age<br></br>Female sex<br></br>Head trauma<br></br>Vestibular neuronitis<br></br>Labyrinthitis<br></br>Migraines<br></br>Inner ear surgery<br></br>Meniere's disease</p>
<p>Summarise the epidemiology of BPPV.</p>
<p>Primary (idiopathic) BPPV has a peak incidence between 50 and 70 years of age, but can occur in any age group. Migraine and head trauma are more common in younger patients with secondary BPPV compared with older patients with secondary disease.</p>
<p>Recognise the presenting symptoms of BPPV. Recognise the signs of BPPV on physical examination.</p>
<p>Vertigo<br></br>Nausea, imbalance, and lightheadedness<br></br>Absence of associated neurological or otological symptoms<br></br>Normal neurological and otological exam<br></br>Positive Dix-Hallpike manoeuvre</p>
<p>Identify appropriate investigations for BPPV and interpret the results.</p>
<p>Dix-Hallpike manoeuvre</p>
<p>Supine lateral head turns</p>
<p>How do you perform Dix-Hallpike manoeuvre?</p>
<p>The patient is seated and positioned on an examination table such that the patient's shoulders will come to rest on the top edge of the table when supine, with the head and neck extending over the edge. The patient's head is turned 45° towards the ear being tested. The head is supported, and then the patient is quickly lowered into the supine position with the head extending about 30° below the horizontal while remaining turned 45° towards the ear being tested.</p>
<p>The head is held in this position and the physician checks for nystagmus. To complete the manoeuvre, the patient is returned to a seated position and the eyes are again observed for reversal nystagmus.</p>
<p>Define infectious mononucleosis.</p>
<p>Infectious mononucleosis (IM), also known as glandular fever, is a clinical syndrome most commonly caused by Epstein Barr virus (EBV) infection.</p>
<p>Explain the aetiology/risk factors of infectious mononucleosis.</p>
<p>Kissing<br></br>Sexual behaviour</p>