RT Book, Section
A1 Parikh, Rushi R.
A1 Huang, Craig J.
A2 Tintinalli, Judith E.
A2 Ma, O. John
A2 Yealy, Donald M.
A2 Meckler, Garth D.
A2 Stapczynski, J. Stephan
A2 Cline, David M.
A2 Thomas, Stephen H.
SR Print(0)
ID 1166593974
T1 Stridor and Drooling in Infants and Children
T2 Tintinalli's Emergency Medicine: A Comprehensive Study Guide, 9e
YR 2020
FD 2020
PB McGraw-Hill Education
PP New York, NY
SN 9781260019933
LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1166593974
RD 2024/04/19
AB Stridor  is  characterized  as  a  high-pitched,  harsh,  monophonic  sound  produced  by  turbulent  airflow  through  a  partially  obstructed  airway.1  Both  inspiratory  and  expiratory  stridor  are  associated  with  airway  obstruction.  As  air  is  forced  through  a  narrow  tube,  it  undergoes  an  increase  in  speed  and  a  decrease  in  pressure  (Bernoulli’s  principle).  The  decrease  in  lateral  pressure  causes  the  walls  of  the  airway  to  temporarily  collapse  and  vibrate,  generating  this  stridulous  sound.  Hagen-Poiseuille’s  law  shows  that  resistance  to  laminar  airflow  increases  markedly  with  small  decreases  in  the  airway’s  radius.2  A  small  amount  of  inflammation  can  result  in  significant  airway  obstruction  in  children.