Edema is swelling of the observed accumulation of
fluid in the tissues of the body. Edema
most commonly occurs in the feet and legs, where it is called peripheral edema. The swelling is the result of the
accumulation of fluid under the skin in the spaces in the tissues. All body tissues of cells and tissues
that compose the cells contain. The
connective tissue around the cells and blood vessels is known as the
interstitium. Most of the body
fluids outside the cells are usually in two rooms, blood vessels (such as
"liquid" or serum portion of your blood) and spaces (not in the
cells) are stored. In various
diseases, excess liquid in one or the other to accumulate these chambers.
pitting edema |
Organs of the body have spaces where fluid can accumulate.Accumulation of fluid
in the interstices of the air (alveoli) in the lung occurs, in a condition
called pulmonary edema. In
addition, excess fluid accumulates in the sometimes so-called third space, the
cavities in the abdomen (peritoneal or abdominal cavity - called
"ascites") contains or chest (lung or pleural cavity - called
"pleural effusion"). Hydrops
refers to the heavy, broad collection of fluid in all tissues and body cavities
simultaneously.
Edema, by applying pressure to the area by the skin can be detected inflated
with a finger. If the pressure
causes a depression that persists for some time after the release of pressure,
as edema is swelling. , Any form
of pressure, like the elastic in socks induce this type of pitting edema.
In non-pitting edema, which usually acts on the legs or arms, pressure
that is applied to the skin, does not give rise to a sustained retreat. Non-edema can occur in certain
diseases of the lymphatic system, such as lymphedema, a disorder of the
lymphatic circulation, which can occur after a mastectomy, lymph node surgery
or congenital, is. Is another
cause of non-edema of the legs called pretibial myxedema, the swelling of the
tibia that occurs in some patients with hyperthyroidism. Non-edema of the legs is difficult to
treat. Diuretics are generally
not effective, although elevation of the legs at regular intervals throughout
the day and printing devices can reduce swelling.
Edema is due to systemic disease, ie diseases that affect different organs and
body systems, or due to local conditions with only the affected limb. The most common systemic diseases with
edema involve the heart, liver and kidneys. Such
diseases include edema occurs primarily because of the retention of the body
too much salt (sodium chloride). Excess
salt causes the body to retain water. The
water then escapes into the interstitial tissue spaces where it seems as edema.
The most common conditions that cause local edema, varicose veins and
thrombophlebitis (vein inflammation) of the deep veins of the legs. These conditions can cause inadequate
pumping of blood through the veins (venous insufficiency). The result was to pressure in the
veins forces fluid stay ends (especially the ankles and feet).Excess liquid,
then penetrating into the interstices of the fabric, which swelling.
The body's balance of salt is generally well regulated. A normal person can consume small or
large quantities of salt in the diet without worrying about the development of
fatigue or retention. Salt
consumption is determined by eating habits and achieve the elimination of salt
from the body via the kidneys. The
kidneys have a greater capacity, the amount of salt in the body by the amount
of salt eliminated (excreted) with the control urine. The amount of salt is excreted by the
kidneys due to hormonal and physical factors, whether the retention or removal
of salt by the kidneys is necessary to signal controlled.
pitting edema grade |
If the blood flow to the kidneys is reduced by an underlying disease
such as heart failure, the kidneys react by retaining salt. This salt retention occurs because the
kidneys perceive that the body needs more fluid to compensate for decreased
blood flow needs. If the patient
kidney disease, which impairs the kidney function is the ability to excrete
salt in the urine is limited. In
both states, the amount of salt in the body, exposing the patient to hold water
and edema.
Patients with impaired in their ability to excrete salt normally required to
produce a salt diet and / or diuretic medications may be subject to (water
pills). In the past, patients
with diseases with edema on diets very limited places in salt intake. With the development of new and very
powerful diuretic, it will be marked restriction in dietary salt intake is
usually required. These diuretics
work by blocking the absorption and salt retention by the kidneys, thereby
reducing the amount of salt and water, which is excreted in the urine.
The leg veins are responsible for the transport of blood through the veins of
the trunk, where it is then returned to the heart. The leg veins have valves which
prevent backflow of blood in them. Venous
insufficiency is incompetence of the veins coming through the expansion or
enlargement of the veins and their valves to malfunction. What happens, for example in patients
with varicose veins. Venous
insufficiency leads to a backup of blood and increased pressure in the veins,
swelling of the legs and feet. The
leg edema can occur with an episode of the deep vein thrombophlebitis, a blood
clot in an inflamed vein. In this
situation causes the clot in a deep vein blocks the return of blood and
therefore increased pressure against the veins of the legs.
Venous insufficiency is a problem that is localized in the legs, ankles and
feet. One leg may be more
affected than the other (asymmetrical edema). In
contrast, systemic diseases which are associated with fluid retention in
general lead to the same amount of edema in both legs, and can also cause edema
and swelling in the rest of the body. Response
to treatment with diuretics in patients with venous insufficiency Of Digits
tend satisfied. This is because
the continued pooling of fluid in the lower extremities is to mobilize it too
difficult for diuretics edema fluid. The
elevation of the legs periodically during the day and the use of compression
stockings can relieve edema. Some
patients require surgery to relieve swelling caused by chronic venous
insufficiency.
The edema may be a problem in systemic diseases of the heart, liver or kidney. Diuretic therapy may be initiated,
often to relieve edema. The
strongest diuretics are loop diuretics, so called because they work in this
part of the renal tubules, called the loop of Henle. Renal tubules are small ducts to
regulate salt and water balance, whereas the transport of urine formation. Loop diuretics clinics are available:
- Furosemide (Lasix),
- Torsemide (Demadex), and
- Butethamine (Bumex).
The doses of these diuretics vary depending on clinical circumstances. These drugs can be administered
orally, although seriously ill patients in hospital they can receive
intravenously for faster response times and effective. If a loop diuretic effective alone, it
can be combined with an agent, the lower (distal) operates in the tube. These agents include the thiazide
diuretics such as hydrochlorothiazide (Hydrodiuril) or a similar kind, but more
as a diuretic metolazone (Zaroxolyn). When
diuretics that work are used at different locations in the kidney together, the
answer is often greater than the combined responses to the individual diuretics
(synergistic response).
Some diuretics often lead to excessive loss of potassium in the urine,
resulting in a depletion of potassium from the body. These drugs include diuretics,
thiazides, and metolazone. Patients
on these diuretics are often recommended, potassium supplements and / or eating
foods high in potassium to take. Potassium-rich
foods include certain fruits such as:
- Bananas,
- Orange juice,
- Tomatoes, and
- Potatoes.
Patients with renal failure often have no need potassium supplements
with diuretics because their damaged kidneys tend to retain potassium. In some cases, the urine volume
induced by the addition of a diuretic with potassium-sparing diuretic, does not
attack the layer can be improved from potassium. These are the diuretic spironolactone
(Aldactone), triamterene (Dyrenium, a component of Dyazide) and amiloride
(Midamor). Adding one of these
diuretics diuretic regimen for the patient can prevent the need for potassium
supplements. Another diuretic
that can be used is acetazolamide (Diamox), the development of an increased
concentration of bicarbonate (to alkaline) in the blood counter.Increased
bicarbonate sometimes occurs in patients taking other diuretics.
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