HEMODYNAMIC DISEASE I HIGH YIELD Flashcards
what causes extravascular fluid to accumulate?
increased hydrostatic pressure
or
diminished plasma oncotic pressure
how does non-inflammatory edema fluid appear?
transudate-heart, renal or hepatic failure, malnutrition
how does inflammatory edema fluid appear?
exudate, increased vascular permeability
edema can result due to?
increased hydrostatic pressure
reduced plasma oncotic pressure
sodium retention
lymphatic obstruction
inflammation
effect of localized increase in hydrostatic pressure?
venous obstruction or compression
effect of generalized increase in hydrostatic pressure?
CHF
constrictive pericarditis
liver cirrhosis
effect of generalized reduced plasma oncotic pressure?
albumin loss
decreased synthesis of albumin
sodium retention can result in what affect on renal perfusion affecting what else?
decreased renal perfusion due to increased renin-angiotensin-aldosterone secretion resulting in hypertension
transudate specific gravity (SG)?
SG<1.012
exudate specific gravity (SG)?
SG>1.020
what is the morphology of edema
clearing and separation of the ECM and subtle cell swelling, most commonly seen in SQ tissues, the lung and brain
what are the two types of edema?
subcutaneous
- pitting
- dependent
Visceral
- pulmonary
- brain
hyperemia does what to the tissues?
active or passive?
affected tissues become erythematous due to engorgement of vessels with oxygenated blood
active
congestion does what to the tissues?
active or passive?
passive proces in which affected tissues become cyanotic due to RBC stasis and accumulation of deoxygenated hemoglobin
example of systemic congestion?
cardiac failure