Unit 1 - Peripheral Vascular Disease Flashcards
(123 cards)
Edema is defined as
either a generalized or local swelling in which there is an excessive amount of fluid in tissue
This can involve any of the tissues in the body, for example;
cerebral edema or pulmonary edema
Localized edema may occur as part of the body’s normal
normal response to injury or trauma in a lower limb.
Localized edema may occur as part of the body’s normal response to injury or trauma in a lower limb. This type of edema resolves when?
as the injury resolves
dependent edema
Is characterized by…?
3 causes
Characterized by being
Temporary/transient
prolonged standing,
prolonged lack of motion to stimulate venous and lymphatic fluid return
the effects of gravity
Someone may have swollen legs after standing for an unusually long period, but the swelling will abate after the legs are elevated.
When does dependent edema resolve?
when the conditions that brought it on are removed
dependent edema
Someone may have swollen legs after…
But…
Typically…
Someone may have swollen legs after standing for an unusually long period,
but the swelling will abate after the legs are elevated.
Typically, the person sleeps and the edema is gone in the morning.
Dependent edema is usually not cause for concern as…
it may be attributed to a particular set of circumstances and resolves easily
Lower limb edema that develops without a visible cause and does not resolve easily with leg elevation may be due to?
a systemic disease
5 Systemic Diseases
that can lead to lower limb edema
Cardiac Disease Heart Failure Hepatic Disease Renal Disease Inflammatory Disease Malnutrition or Starvation
Cardiac Disease Heart Failure is a condition where…
the heart no longer exerts the strength necessary to effectively return all the blood from the extremities
Cardiac Disease Heart Failure is a condition where the heart no longer exerts the strength necessary to effectively return all the blood from the extremities.
This results in…
excess pooling of blood in the lower limbs assisted by gravity
Cardiac Disease Heart Failure
Excess pooling of blood in the lower limbs assisted by gravity does what?
increases the pressure in the veins and capillaries of the legs
Cardiac Disease Heart Failure
Excess pooling of blood in the lower limbs assisted by gravity increases the pressure in the veins and capillaries of the legs.
This increased pressure…
makes it more difficult for fluid to move from the interstitial compartment into the capillaries and so it remains in the interstitial space causing edema
Hepatic or Liver Disease may effect the production of?
plasma proteins
Hepatic or Liver Disease may effect the production of plasma proteins.
These large plasma proteins do what?
provide a large part of the osmotic pressure that draws fluid from the interstitial space into the capillaries and bloodstream
Hepatic or Liver Disease may effect the production of plasma proteins.
These large plasma proteins provide a large part of the osmotic pressure that draws fluid from the interstitial space into the capillaries and bloodstream.
When the number of these proteins is decreased, what happens?
the osmotic pressure of the blood is decreased and more fluid is left behind in the interstitial space
Renal Disease results in?
fluid and electrolyte imbalances
Renal Disease results in fluid and electrolyte imbalances, particularly?
sodium retention
Renal Disease results in fluid and electrolyte imbalances, particularly sodium retention.
Sodium retention may result in? (2)
edema
excessive loss of protein from the body through proteinuria
Malnutrition or starvation results in?
inadequate protein intake
Malnutrition or starvation results in inadequate protein intake.
Inadequate protein intake will result in?
fewer plasma proteins being produced
Malnutrition or starvation could include? (2)
any malabsorption disease
such as
Celiac Disease
or
Inflammatory Bowel Disease
Inflammatory Disease may cause edema when?
example?
an immune response triggers
the release of chemical toxins,
increased local blood flow
and
influx of white blood cells mistakenly against the body’s own tissue
E.g. = RA