RT Book, Section
A1 Kemp, Walter L.
A1 Burns, Dennis K.
A1 Brown, Travis G.
SR Print(0)
ID 57051675
T1 Chapter 8. Hemodynamics
T2 Pathology: The Big Picture
YR 2008
FD 2008
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-147748-2
LK accessphysiotherapy.mhmedical.com/content.aspx?aid=57051675
RD 2024/04/19
AB In  general  terms,  the  topic  of  hemodynamics  deals  with  flow  and  distribution  of  blood  and  fluids  within  the  body.  To  maintain  the  correct  amount  of  intravascular  and  extravascular  volumes,  the  body  must  maintain  both  hydrostatic  pressure  and  osmotic  pressure.  In  vessels,  hydrostatic  pressure  refers  to  the  pressure  pushing  fluid  out  into  the  interstitial  tissue.  In  interstitial  tissue,  hydrostatic  pressure  pushes  fluid  into  the  vessels.  Osmotic  pressure,  which  is  imparted  by  the  presence  of  dissolved  solutes,  pulls  fluid  into  the  vessels  and  into  the  interstitial  tissue.  An  imbalance  in  either  of  these  two  pressures  results  in  an  abnormal  distribution  of  fluid  in  the  cells  or  interstitial  tissues.  The  term  used  to  describe  excessive  amounts  of  fluid  within  the  interstitial  tissues  or  within  cells  is  edema.