dr. abdulrahman hagr mbbs frcs(c) associate professor king...
TRANSCRIPT
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Larynx IILarynx IIDr. Abdulrahman Hagr MBBS FRCS(c)
Associate Professor King Saud University Otolaryngology Consultant
Otologist, Neurotologist & Skull Base Surgeon
King Abdulaziz Hospital
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Larynx II• Laryngitis
– Acute – Chronic
• Non-specific laryngitis• Specific laryngitis
– Acute epigllotitis– Croup
• Laryngeal paralysis – Unilateral – Bilateral
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Healthy Vocal Cords
• Smooth
• straight edges
• white in color
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Laryngitis• Inflammation of the vocal cords
• Laryngitis can be – acute (short term) – chronic (long term).
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Presentation
• Dysphagia
• Dysphonia
• Stridor
• Acquired – Inflammation
– Trauma
– Foreign bodies
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Stridor• Inspiratory Supra-glottis
• Expiratory Intra-Thorax
• Biphasic Glottis & subglottis
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Acute laryngitis
• Short term • Follows upper
respiratory infections.
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The second picture was taken four days after the first, and demonstrates the resolution of the infection
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Treatment for acute laryngitis
•Vocal rest
• lots of water,
•Humidifier
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Chronic laryngitis • Long term laryngitis • Misuse and overuse• Exposure to irritants
– Smoke– Dust – Acid reflux
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Treatment for chronic laryngitis:
• Same as acute laryngitis• Rx underlying cause
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Larynx II• Laryngitis
– Acute – Chronic
• Non-specific laryngitis• Specific laryngitis
– Acute epigllotitis– Croup
• Laryngeal paralysis – Unilateral – Bilateral
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Acid Reflux• Stomach acid Larynx
• Most common cause of laryngitis
• Small amounts of reflux can cause
considerable damage.
• Without GERD symptoms
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Rx Another result of acid reflux.
Grandulomas
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Symptoms
• Hoarseness• Bad/bitter taste in mouth
(especially in morning)• Chronic (on-going) cough• Asthma-like symptoms• Frequent throat clearing
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Symptoms• Referred ear pain
• Pain or sensation in throat
• Problems while swallowing
• Feeling of "lump" in throat
(globus pharyngeus)
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Complications
• Stenosis• Recurrent spasm• C-A fixation• Dysphagia• Laryngeal CA.
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Reflux laryngitis• Examination:
– Grade I : Normal
– Grade II : Erythema / Edema
– Grade III : Pachydermia
– Grade IV : ulcer & granuloma
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Reflux laryngitis
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Reflux laryngitis• Dx:
– Hx
– Examination
– 24 H double probe PH monitoring.
– Ba-swallow.
– Gastroscope
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Reflux laryngitis• Treatment:
– Dietary and Lifestyle modifications.– Antacids.– Systemic H2-blockers.– Prokinetic agents.– Mucosal cytoprotectants.– Proton pump inhibitors; Omebrazole
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Other inflammatory disease
Granulomatous Conditions That May Affect the Larynx
Disease Laryngeal InvolvementTuberculosis Posterior one-third of larynx involvedSyphilis Painless ulcers; positive syphilis serologyLeprosy Supraglottic involvementHistoplasmosis Anterior larynx involvedBlastomycosis Painless ulcers; microabscessesActinomycosis Draining sinuses; sulfur granulesRhinoscleroma Catarrhal stage, Mikulicz’s cellsSarcoidosis Supraglottic swelling, nodules, granulomasWegener’s Subglottic involvement; necrotizing vasculitis; pulmonary orgranulomatosis renal involvement
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Larynx II• Laryngitis
– Acute – Chronic
• Non-specific laryngitis• Specific laryngitis
– Acute epigllotitis– Croup
• Laryngeal paralysis – Unilateral – Bilateral
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Biphasic Stridor
• Result of extrathoracic tracheal obstruction
including
– Glottis
– Subglottis
• Intermediate pitch
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Epiglottitis
• Bacterial cellulitis of epiglottis
• 2 to 7 years old
• Rapid presentation over 2-6 hrs
• Haemophilus influenzae type B most common
• ↑↑ winter and spring.
• incidence greatly decreased since vaccine
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Acute epiglottitis
• Fever• Sore throat• Muffled voice• Inspiratory stridor• Sitting upright• Ill-appearing• Drooling,
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Acute epiglottitis
• Examination of the epiglottis may precipitate
laryngospasm → not recommended.
• Lateral X-ray → classic “thumb” sign.
• Tx: operating room immediately to establish the
diagnosis and secure an airway
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Epiglottitis
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Epiglottitis
• lateral neck film - “thumb sign”• if suspected, diagnose by direct
laryngoscopy in OR• Nasotracheal intubation• IV antibiotics • extubate - usually within 48 hours
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Laryngotracheobronchitis
• croup - Scottish for barking cough
• 6 months to 3 years old
• Parainfluenza viruses types 1 and 2 most
common
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Laryngotracheobronchitis
• URI symptoms
• Barking cough
• Hoarseness
• Low-grade fever
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Laryngotracheobronchitis
• laryngoscopy for those with respiratory
distress
• AP neck - “steeple sign”
• supraglottis normal
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Differential Dx• Epiglottitis• Bacterial tracheitis• Foreign body• Subglottic stenosis• Peritonisillar abscess• Retropharyngeal
abscess• Diptheria• Laryngomalacia
• Vocal cord paralysis• Smoke inhalation• Burns/Thermal injury• Neoplasm• Laryngeal fracture
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Complication of Croup
• Airway obstruction
• Pneumothorax and pneumomediastinum
• Extend into the lower airway
• Dehydration.
• Subglottic stenosis
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Croup Vs Epiglottitis
Characteristics of Laryngotracheitis and Epiglottitis
Feature Laryngotracheitis EpiglottitisAge <3 years >3 yearsOnset Gradual (days) Acute (hours)Cough Barky NormalPosture Supine SittingDrooling No YesRadiograph Steeple sign, narrowed subglottis Thumb sign, enlarged
epiglottis,dilated hypopharynxCause Viral BacterialTreatment Supportive (croup tent) Airway management (intubation or
tracheotomy), antibiotics
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Larynx II• Laryngitis
– Acute – Chronic
• Non-specific laryngitis• Specific laryngitis
– Acute epigllotitis– Croup
• Laryngeal paralysis – Unilateral – Bilateral
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Intrinsic muscles of the larynx• Cricothyroid tenses and lengthens the vocal lig.
• Posterior cricoarytenoid abduct (OPENS)
• Lateral cricoarytenoid adduct (CLOSE)
• Transversearytenoid adduct (CLOSE)
• Oblique arytenoids adduct (CLOSE)
• Thyroarytenoid decreases the tension & length
• Vocalis (portion of the thyroarytenoidlying within the vocal fold)
• Thyroepiglotticus depresses the epiglottis
• Aryepiglotticus same
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PCA
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Vocal Cord Paralysis
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Vocal cord paralysis
• 2nd common cause of congenital upper a/w obstruction.
• Unilateral VC paralysis > bilateral
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Introduction
• Affects quality of life• Potential morbidity and mortality• A sign of a disease process with multiple
etiologies, necessitating thorough evaluation
• Multiple therapeutic options that must be tailored to the patient
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Etiology
• Dysfunction at– Brain and brainstem
nuclei– Vagus nerve– Recurrent laryngeal
nerve
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Etiology: Neurologic
• Stroke• CNS tumor• Diabetic neuropathy• Amyotrophic lateral sclerosis (ALS)• Parkinson disease• Myasthenia gravis• Guillain-Barre syndrome
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Etiology: Tumor infiltration or mass compression
• Skull base
• Thyroid
• Esophagus
• Lung
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Etiology: Systemic disease
• Systemic lupus erythematosus
• Sarcoidosis
• Amyloidosis
• Tuberculosis
• Mitochondrial disorders
• Polyarteritis nodosa
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Etiology: Traumatic• Iatrogenic: Surgical
– Thyroidectomy– Anterior cervical spine
procedures– Esophagectomy– Thymectomy– Carotid endarterectomy– Cardiothoracic surgery
• Aortic surgery• Coronary artery bypass
grafting• Pulmonary lobar resection• Mediastinoscopy
• Iatrogenic: Non-surgical– Endotracheal intubation
• Arytenoid dislocation, subluxation
• Tapia’s syndrome– Nasogastric tube placement1
• Non-iatrogenic– Blunt or penetrating trauma to
the neck
Brousseau et al. A rare but serious entity: nasogastric tube syndrome. Otolaryngol Head Neck Surg. 2006 Nov;135(5): 677-679.
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Etiology: Idiopathic
• Not well understood
• Possible infectious cause
– Lyme disease
– Tertiary syphilis
– Epstein-Barr virus
– Herpes simplex virus Type I
• Diagnosis of exclusion
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Etiology
1. Surgery (46%)
2. Idiopathic (18%)
3. Malignancy (13%)
• Lung was most common
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Evaluation – History
• Symptoms– Voice changes
• Hoarseness to aphonia
• Vocal fatigue, neck pain
– Aspiration
– Weak, ineffective cough
• Past medical and surgical history
• Social history
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Evaluation – Physical Exam
• Cranial nerve exam
• Nasopharyngolaryngoscopy– Vocal cord asymmetry
– Horizontal and vertical position
– Glottic gap
– Pooled secretions
– Aspiration
– Maximal phonation time (MPT)
– Supraglottic hyperfunction
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Evaluation• Assess swallow function
and aspiration– Modified barium swallow– Functional endoscopic
evaluation of swallowing (FEES)
• Imaging– CXR– CT with contrast: May
evaluate the entire course of the RLN.
– MRI• Laryngeal electromyography
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Modified barium swallow FEES
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Treatment• Goal: prevent aspiration and Improve
voice. • Patient factors affect treatment
strategies.– Presence of aspiration– Nature of nerve injury– Vocal demands– Medical comorbidities– L-EMG findings
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Treatment• Strategies:
– Observation for 6-12 months– Speech and swallow therapy– Surgical intervention
• Temporary: Vocal fold injection• Permanent: Vocal fold injection with
durable material, medialization thyroplasty +/- arytenoid adduction or laryngeal reinnervation
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