http://www.fpnotebook.com/
Vocal Cord Paralysis
Aka: Vocal Cord Paralysis, Laryngeal Nerve Palsy, Laryngeal Paralysis
See AlsoHoarseness
Causes of Unilateral Vocal Cord ParalysisTumor MedicationsVincristine Phenytoin Fried (1975) Laryngoscope 85:1770-81 Inflammation or InfectionCollagen vascular disease Lyme Disease Mononucleosis Sarcoidosis Toxic and Metabolic CausesDiabetes Mellitus Alcoholism Heavy metal exposureArsenic Poisoning Mercury Poisoning Lead Poisoning TraumaIntubation Post-surgicalCarotid surgery Neck dissection for head and neck cancer Cardiac surgeryPatent Ductus Arteriosus ligation (newborns)Valve repair Thyroid surgeryTracheal surgery
SymptomsHoarseness Decreased endurance for speech and voice Fatigue Swallowing difficulty or Choking on liquids Singing difficulty
Signs: LaryngoscopyParalyzed vocal cord is fixed in paramedian positionJust lateral to midline Slight adduction may be seen (collateral innervation) Paralyzed vocal cord is bowed and flaccidWhen speaking, drops lower than the unaffected cord Uninvolved vocal fold may compensateUninvolved cord crosses midline over next 2-3 months Meets paralyzed cord
EvaluationSee Speech Exam Careful lymph node examinationSee Lymphadenopathy of the Head and Neck
RadiologyChest XRay (consider lordotic views)
Management: GeneralLaryngology or ENT referral in most cases Early speech pathology for voice building Exercise s
Management: Surgery for unilaterally paralyzed vocal cordMedialization Laryngoplasty (Thyroplasty) with implantVarious implant types (e.g. Gore-Tex, Silicon) Medialization via office injectionCollagen injections Avoid Teflon augmentation due to granulation ReinnervationRequires more time to result than other procedures
ComplicationsAspiration of food contents
ResourcesVoice Doctor Website (Dr. Thomas)http://www.voicedoctor.net/diagnose/sx/urln.htm
ReferencesRosen (1998) Am Fam Physician 57(11): 2775-2782