SEMIOLOGY LECTURE 2 Flashcards
EDEMA
- excessive accumulation of interstitial fluids, either
localized or generalized. - when the amount of generalized edema is great,
the condition is termed anasarca or dropsy. - in the adult fluid accumulates to the amount of
about 4.5 kg before it is detectable by the
examiner as pitting edema
- Cardiac edema
in: right cardiac failure, global cardiac failure,
constrictive pericarditis;
- principal mechanism: increase hydrostatic
pressure;
- secondary mechanism: hyperaldosteronism,
increase capilar permeability, hypoalbuminemia,
hypersecretion of antidiuretic hormon.
- location: it first appears in the lower parts of the
body: feet, calfs, thighs, sacrat region till it
becomes generalized edema - anasarca
CARDIAC EDEMA CHARACTERISTICS
initially – white, soft,
- “classic cardiac edema”: bluish, cyanotic edema,
tough, little painful;
- associated with cyanosis, dyspnoea, painful
hepatomegaliy, dilated jugular veins with
hepatojugular reflux, increased venous pressure,
oliguria.
TIME OF OCCURRANCE
: initially in the evening, after
prolonged orthostatism or physical effort and it is
relieving affer rest; it is absent in the morning;
after a period of evolution it becomes permanent
Renal edema
in acute and chronic glomerulonephrities
- complex mechanism: disorders of capilar
permeability; decreased oncotic pressure; increased
reabsorbtion of water and sodium;
RENAL EDEMA LOCATION
initially appears on the face, eyelids, hands,
but it is rapidly extended to lower
limbs, anterior wall of the abdomen and frequently it is
associated with anasarca
RENAL EDEMA CHARACTERISTICS
soft, puffy, with significant pitch sign.
- white edema
- not painful;
- more evident in the morning and diminishes during the
day
Hepatic edema
- in hepatic cirrhosis, in chronic hepatitis;
- mechanisms:
🡪 principal: hyperaldosteronism;
🡪 secondary: hypoalbuminemia, hyperestrogenemia,
hypersecretion of antidiuretic hormone.
HEPATIC EDEMA CHARACTERISTICS
white yellowish colour;
- small initially
- can become generalized anasarca;
- associated with jaundice, spider nevi, hepatomegaly;
- appears after ascities
Carential edema
in neoplasms, tuberculosis, deficient intake of proteins
- mechanism: low oncotic pressure;
- soft, white, diffuse edema;
- localised in the lower half of body
Hypothyroidism - mixedema
accumulation of mucopolizaharides in lax connective
tissue, producing increased colloid-osmotic pressure.
- generalized, white edema with reduced elasticity,
without pitch sign.
- skin is pale, dry, cold and scuamose
LOCALIZED EDEMA TYPES
ALLERGIC EDEMA, LYMPHATIC EDEMA, VENOUS EDEMA
ALLERGIC EDEMA
Angioneurotic edema (Quincke’s edema):
- sudden and temporary edema in a localized area of
skin or mucosa, from allergy
- signs: single or multiple pruritic nonpitting
swellings appear on the face, tongue, larynx,
hands, feet, genitalia, and subside with or without
treatment.
Lymphatic edema
Types:
a. inflammatory edema: primary limphangitis;
b. non-inflammatory edema: neoplasms,
adenopathies
c. parasitosis: filaria.
Lymphatic edema CHARACTERISTICS
Colour:
= white: edema by compression;
= red: in lymphangitis;
= purple: associated with teleangiectasis.
- Tough, nonpainful