Edema
Edema
Definition Clinically apparent increase in the interstitial 可质) fluid volume Weight gain precedes overt edema Weight loss in edematous patients before dry weight Massive edema is called anasarca
Definition • Clinically apparent increase in the interstitial (间质) fluid volume • Weight gain precedes overt edema • Weight loss in edematous patients before “dry weight” • Massive edema is called Anasarca
Edema Localized or generalized Generalized form puffiness(浮肿) of the face edema of periorbital areas Indentation of the skin"pitting edema 凹陷性水肿 Fluid may also accumulate in body cavities ascite(腹水) hydrothorax(胸水)
Edema • Localized or generalized • Generalized form: puffiness（浮肿） of the face edema of periorbital areas Indentation of the skin “pitting edema” 凹陷性水肿 • Fluid may also accumulate in body cavities ascite（腹水） hydrothorax (胸水）
Edema Pitting edema
Edema Pitting edema
Pathogenesis Reduced plasma osmotic pressure Capillary damage Reduction of effective arterial volume Reduced cardiac output Renal factors Renin-Angiotension-Aldosterone
Pathogenesis Reduced plasma osmotic pressure Capillary damage Reduction of effective arterial volume Reduced cardiac output Renal factors Renin-Angiotension-Aldosterone