4. Emergencies in Ear Nose and Throat Flashcards
Name common emergencies affecting the ear?
- Foreign Body
- Haematoma
- Traumatic TM Perforation
- Temporal Bone Fractures
- Hearing Loss
- Mastoiditis
What are the signs and symptoms of foreign bodies in the external auditory canal?
– Otalgia
– Otorrhea
What might be the complications of a foreign body in the EAC?
Secondary complications:
– Infection, mucosal erosion, TM perforation
Describe the management of a foreign body in the EAC
Kill any live insects
Remove foreign body with micro alligator forceps
Irrigation ( do not use if organic FB )
Antibiotics
When is irrigation for removal of FB from the EAC contraindicated?
If the FB is organic
For what type of object should a crocodile forceps not be used?
Smooth round objects
What implement would be suitable for removing a round, smooth FB from the EAC?
Blunt Hook
What instrument is suited for removing the vast majority of FB’s found in the EAC?
Suction
What is the cause of Auricular Haematoma?
Trauma, shearing forces.
What is the clinical appearance of auricular haematoma?
Fluctuant bluish swelling of auricle
What are the potential complications of auricular haematoma?
Complications: – Infection – Abscess – Cartilaginous necrosis – Deformity (Cauliflower Ear)
What is the Tx for auricular haematoma?
Management
– Drainage (Needle aspiration/Recent, Incision & Drainage/Delayed presentation 2-3days)
– ABX
– Compression Dressing
What type of mechanisms may leaf to Traumatic TM perforation?
Foreign bodies (eg., cotton buds, hairclips, matchsticks). Explosion. Slap on the ear. Fractured skull. Welding sparks. Barotrauma. Syringing (Instrumentation) Water sports.
What are the signs and symptoms of Traumatic TM perforation?
– Hx of Trauma – Tympanic Membrane perforation, possibly with ragged edges – Bloody Otorrhea – Otalgia – Hearing Loss – Tennitus
Describe how you would evaluate a Traumatic TM Perforation?
- History.
- Careful examination of the ear, especially to exclude infection (Otoscopy). Removal of blood clot should not be performed.
- If the perforation is clearly seen, its size and shape should be documented.
- Test Hearing. Audiogram if possible – if not possible Tuning Fork Test and clinical assessment of hearing.
- If the patient has had head injury, it is important to record the function of the facial nerve and to note if any CSF leakage is present.
- Simple vestibular assessment if indicated.
Describe broadly, the management of Traumatic TM perforation?
- Reassurance: explain to the patient that there is a good chance of spontaneous resolution (unless due to a welding spark).
- If the perforation is contaminated, consider either giving an oral antibiotic or an antibiotic + antibiotic drops or drops alone.
- Keep water out of the ears until the perforation has healed.
- Review within 6 weeks but if the ear discharges, the patient should be advised to see their general practitioner.
- Consider surgery if the perforation persists for longer than two months.
What is Otitic Barotrauma?
Trauma, as a result of an inability to ventilate the middle ear which causes insufficient equilibrium in th middle ear. (Diving, Flight)
Describe the management of barotrauma?
Management:
– Repeated Valsalva maneuver
– Topical nasal decongestants
– Myringotomy & PE tube
What are the signs and symptoms of a temporal bone fracture?
Hx – Blunt force trauma
– Battle’s sign – Raccoon eyes – Haemotympanum – Hearing loss – Dizziness – CSF / Bloody otorrhea – CN VII palsy
What causes longitudinal temporal bone fractures?
The line of force runs roughly from lateral to medial
What are the potential consequence of a longitudinal temporal bone fracture?
Conductive Hearing loss (Ossicular chain disruption)
VII Nerve Palsy (Extend through the facial nerve canal)
What causes Transverse Temporal Bone Fractures?
Trauma to the occiput or cranial-cervical junction
Line of force running roughly anterior to posterior
What are the potential complications of a transverse temporal bone fracture?
Fracture passing through the vestibulocochlear apparatus = Sensorineural hearing loss, Equilibrium disorders
VII Nerve Palsy – Path often close to the nerve’s labyrinthine segment
What investigations should be performed for a transverse temporal bone fracture?
Investigations:
– Otoscopy
– CT temporal bone
– Audiogram
What is sudden hearing loss defined as?
SNHL ≥ 30 dB over 3 contiguous frequencies within 3 days or less
What are the potential aetiologies of sudden hearing loss?
- Viral
- Trauma (Mechanical,Acoustic)
- Autoimmune (RA, Sarcoidoses, SLE)
- Neurological
What should be asked as part of the history follow sudden hearing loss?
Otological.
Past medical history.
Drug history.
Systemic illnesses.
What examinations should be performed following sudden hearing loss?
General.
Otological.
Neurological.
What investigations should be performed for sudden hearing loss?
Audiogram – day of presentation if possible.
Otoscopy
Haematological (FBC, ESR Glucose Syphilis Serology Rheumtoid factor. ANCA)
Describe the management of Sudden Hearing Loss?
– Ear protection / Avoidance
– Corticosteroids, Antiviral, Vasodilators, Diuretics, Anticoagulants
Tx: If in “Steroid Responsive Zone” on audiogram, steroids dexamethasone 4 mg bd for 7 days as an outpatient, except if contra-indicated.
If not in the “Steroid Responsive Zone”, on audiogram, observe.
Pinna pushed down and forward?
Subperiosteal Abcess
What is the Tx for subperiosteal abcess
– Intravenous ABX
– I&D (If/Req)
– Mastoidectomy (If Req)
What are the 5 emergencies involving the nose, studied?
- Foreign body
- Nasal bone fractures
- Septal Haematoma
- Epistaxis
- Sinusitis
What are the signs and symptoms of foreign body in the nose?
Purulent (foul smelling) UNILATERAL nasal discharge (Rhinorrhoea).
Nasal Obstruction
Vestibulitis affecting one nostril is almost always a sign of a foreign body.
Organic material presents early with purulent discharge; inorganic bodies may remain inert for ages.
What are the potential complications of foreign bodies in the nose?
Orbital or intracranial infection may develop if undetected.
Button batteries fit easily into a child’s nose and rapidly cause severe burns with subsequent septal perforation.
How would you assess a foreign body in the nose before management?
Anterior Rhinoscopy – a good light and suction are required because secretions may obscure the foreign body.
Radiographs are of limited value since most objects are radiolucent.
The other nostril must be examined to exclude a second foreign body.
Describe the management of a foreign body in the nose?
Atraumatic removal in a controlled manner if the child is co-operative. Anaesthesia may be required if this is not successful.
Rigid nasal endoscopes are useful to visualise the object and facilitate atraumatic extraction.
If the patient is a child attempts at removal may cause distress. (Blanket for limbs. Hold head steady)
Good visualization: headlamp & nasal speculum
Alligator forceps should be used to remove cloth, cotton, or paper
Other hard FB are more easily grasped using bayonet forceps or Kelly clamps, or they may be rolled out by getting behind it using an ear curette, single skin hook, or right angle ear hook
How might you remove a fb in the nose of a child?
If the patient is a child attempts at removal may cause distress. An adult may need to restrain a young child by wrapping the child in a blanket in order to restrain its limbs and the child’s head is held steady. This may be necessary as unsuccessful attempts may push the object back further with an increased risk of inhalation or traumatic haemorrhage. In some instances a general anaesthetic may be required.
What are the potential complications of the Tx for removing fb from the nose?
Attempted removal of foreign bodies by untrained personnel may result in epistaxis, displacement of the foreign body and/or ingestion or inhalation.
What are the signs and symptoms of nasal fracture?
– Deformity of nose
– Swelling, ecchymosis, epistaxis
What is the Tx for a nasal fracture?
– Local Anesthetic or General Anesthetic
– Closed or Open reduction
What are the common causes of septal haematoma/abcess?
Trauma
Surgery
What are the signs and symptoms of a septal haematoma/abscess?
Soft, fluctuant swelling of the Septum
Describe the management of septal haematoma/abscess
– Needle aspiration or Incise & Drain
– Bilateral nasal packing for several days
– Prophylactic antibiotics
What are the two types of epistaxis?
Local/Systemic (aka General in the guide)
What are the main local causes of epistaxis?
Trauma, Nose picking, blow injury, surgery
Drying Mucosal Dessication
Nasal Septum Perforation
Inflammatory (allergy, seasonal rhinitis, perennial rhinitis, atrophic rhinitis)
Infective (Acute Viral, Bacterial, Fungal=Assoc w/aids)
Topical Medications (Steroids)
Foreign Bodies
Tumours/Polyps
What are the main systemic causes of epistaxis?
Congenital. (Haemophilia, Christmas Disease, Von Willabrand’s disease, Haemorrhagic Telangiectasis.
Acquired blood disorders. (Leukaemia, Aplastic, Anaemia, Lymphoma, Thrombocytopenia.)
Acquired Diseases (Liver, Renal Disease)
Vitamin
Granulomatosis (Sarcoid/Wegeners).
Endocrine - Pregnancy.
Hypertension.
Which areas are most frequently associated with epistaxis?
Most anterior epistaxis originates at Kiesselbach’s plexus (or Little’s area).
Most posterior bleeding originates at Woodruff’s plexus, behind the middle turbinate at which the sphenopalatine artery enters the nose.
Describe the steps involved in the assessment of epistaxis patient?
Obtain a full history from the patient - check for predisposing factors.
Assess blood pressure and pulse rate and signs of clinical shock.
Ascertain if possible the approximate amount of blood loss.
Patient should be sitting upright and leaning forward to lower blood pressure. Pinch the nostrils tightly together.
Rule out the use of medications eg. non-steroidal anti-inflammatories or anti-coagulants which may be predisposing to the bleed.
Carry out a physical examination to rule out obvious signs of telangiectasia.
General ecchymosis or bruising indicating systemic causes predisposing to the haemorrhage.
Venous access.
Full blood count and haematocrit should be carried out, check coagulation screen, liver function and renal profile.
Describe the initial objectives in the management of epistaxis?
Nose bleeds can be life-threatening. So objective is to secure ABCDE.
Depending on the acuity may need resuscitate as needed,
eg if BP low or dizzy on sitting up.
ABCs; IVI, SAO2, etc. Monitor vital signs often.
Obtain History