-Congenital abnormalities -Cysts -Endocrine changes
Cause/etiology The failure of cartilage to stiffen with development Population with high risk Neonate
Location Epiglottis Be too pliabe and collapes into the airway Typical symptoms Stridor (喘鸣) Evident at birth or within the first few hours or days of life No hoaseness Dyspnea (呼吸困难) In severe condition
Examinations Transnasal fiberoptic laryngoscopy Direct laryngoscope Big and pliable or curly epiglottis No stridor after moving epiglottis
Treatments Mild to moderate outgrow laryngomalacia by 18 months Severe Supraglottoplasty (声门上成形术) tracheostomy (气管切开术)
Definition A lumen 4.0 mm in diameter or less at the level of the cricoid cartilage Cause/etiology Congenital – embryological development Cricoid cartilage The conus elasticus (弹性圆锥) Acquired endotracheal intubation Scarring Hypertrophy
Population with high risk Neonate Typical symptoms - In severe condition Dyspnea (呼吸困难) Stridor Exercise intolerance
Treatments (stenosis grading) Grade 1 to 2 careful observation Grade 3 to 4 Endoscopic or surgical intervention Voice therapy to followed
Definition TEF are opennnings that occur between the esophagus and trachea Cause/etiology Vascular compromise to developing esophagus
Typical symptoms Gastric distention Direct tracheal aspiration Reduced diaphragmatic excusion Treatments (stenosis grading) surgical intervention Voice and therapy to followed
Cause/etiology Abnormal blockage of the ductal system of laryngeal mucous glands Congenital Acquired Location Vocal folds – inner margin, superior or inferior surface Ventricular folds - anywhere Unilateral
Typical symptoms Low vocal quality - hoarseness Breathness Lower pitch Increased aperiodicity Examinations Fiberoptic laryngoscopy Stroboscopy Biopsy
Treatments
Typical symptoms – before 4-5 days before menstruation in 33% of women Vocal fatigue Reduced pitch range Hypophonia Loss of certain harmonics
Videostroboscopic examination Congestion 充血 Microvaries VF thickening Reduced vibratory amplitude Treatment Oral contraceptive pills
Typical symptoms