RT Book, Section
A1 Kozin, Elliott D.
A1 Lustig, Lawrence R.
A2 Papadakis, Maxine A.
A2 McPhee, Stephen J.
A2 Rabow, Michael W.
A2 McQuaid, Kenneth R.
SR Print(0)
ID 1193145551
T1 Hoarseness, & Stridor
T2 Current Medical Diagnosis & Treatment 2023
YR 2023
FD 2023
PB McGraw-Hill Education
PP New York, NY
SN 9781264687343
LK accessmedicine.mhmedical.com/content.aspx?aid=1193145551
RD 2024/10/15
AB The  primary  symptoms  of  laryngeal  disease  are  hoarseness  and  stridor.  Hoarseness  is  caused  by  an  abnormal  vibration  of  the  vocal  folds.  The  voice  is  breathy  when  too  much  air  passes  incompletely  apposed  vocal  folds,  as  in  unilateral  vocal  fold  paralysis  or  vocal  fold  mass.  The  voice  is  harsh  when  the  vocal  folds  are  stiff  and  vibrate  irregularly,  as  is  the  case  in  laryngitis  or  malignancy.  Heavy,  edematous  vocal  folds  produce  a  rough,  low-pitched  vocal  quality.  Stridor  (a  high-pitched,  typically  inspiratory,  sound)  is  the  result  of  turbulent  airflow  from  a  narrowed  upper  airway.  Airway  narrowing  at  or  above  the  vocal  folds  produces  inspiratory  stridor.  Airway  narrowing  below  the  vocal  fold  level  produces  either  expiratory  or  biphasic  stridor.  The  timing  and  rapidity  of  onset  of  stridor  are  critically  important  in  determining  the  seriousness  of  the  airway  problem.  All  cases  of  stridor  should  be  evaluated  by  a  specialist  and  rapid-onset  stridor  should  be  evaluated  emergently.