Pitting edema of both lower extremities

Introduction Depressed edema is generally a diffuse distribution of liquid in the interstitial space of the body, so the pressure is concave, the mechanism is that tissue interstitial fluid production is greater than recovery. Most of the edema is this, such as renal edema, cardiogenic edema.

Cause

What causes the depression of edema in both lower limbs?

(1) Cardiac edema: various causes such as rheumatism, hypertension, syphilis, and congestive heart failure and constrictive pericarditis caused by various diseases such as valves and myocardium.

(2) Nephrogenic edema: acute glomerulonephritis, chronic glomerulonephritis, nephrotic syndrome, sputum nephritis, renal failure, renal arteriosclerosis, renal tubular disease, etc.

(3) Hepatogenic edema: cirrhosis, liver necrosis, liver cancer, acute hepatitis, etc.

(4) Malnutrition edema: 1 Insufficient intake of primary food, seen in war or other causes (such as severe famine); 2 secondary dystrophic edema is seen in a variety of pathological conditions, such as secondary Insufficient food intake (sexual anorexia, loss of appetite in severe diseases, gastrointestinal disorders, pregnancy vomiting, neurological disorders, oral disorders, etc.); digestive dysfunction (insufficient digestive juice, hyperthyroidism, decreased absorption area, etc.); excretion Or excessive loss (large area burns and exudation, acute or chronic blood loss, proteinuria, etc.) and impaired protein synthesis, severe diffuse liver disease.

(5) Edema caused by connective tissue disease: common in lupus erythematosus, scleroderma and dermatomyositis.

(6) allergic edema: such as serum disease.

(7) idiopathic edema: this type of edema is a syndrome whose cause is unknown or whose cause has not been determined (may be more than one). More common in women, often associated with the periodicity of menstruation.

(8) Others: anemia edema, toxic edema in pregnancy.

an examination

Related inspection

Urea clearance rate (UCL) dynamic electrocardiogram (Holter monitoring) urinary sediment tube type urine sediment cytology urine sediment

How to diagnose depression of edema in both lower limbs? When there is excessive accumulation of body fluid in the subcutaneous tissue space, the skin is pale, swollen, wrinkles become shallow, the local temperature is low, and the elasticity is poor. Use a finger to press the skin (such as the internal hemorrhoids, anterior or anterior region), if present. Depression, called depression edema or dominant edema. After the finger is released, the depression will take a few seconds to resolve. This is due to the depression edema, there is more free water in the subcutaneous tissue space due to the increase of local pressure, so that the free water moves to the lower pressure, so there is a depression, the free water returns to the original after the finger is released. Time is the time for the depression to calm down.

Differential diagnosis

What are the symptoms of depression in the lower extremities? Clinically often differentiated from invisible edema. Before the appearance of significant edema, the fluid in the interstitial space has increased, but the local depression is not depressed. This state is called recessive edema. This is because the liquid is adsorbed by the gel network in the interstitial space to become a gelled bound water. Only when the interstitial fluid increases, the interhydraulic pressure increases from -0.87 kPa (-6.5 mmHg) to 0 kPa. When it is above (0mmHg), the free water in the interstitial space will increase significantly. When there is excessive accumulation of body fluid in the subcutaneous tissue space, the skin is pale, swollen, wrinkles become shallow, the local temperature is low, and the elasticity is poor. Use a finger to press the skin (such as the internal hemorrhoids, anterior or anterior region), if present. Depression, called depression edema or dominant edema. After the finger is released, the depression will take a few seconds to resolve. This is due to the depression edema, there is more free water in the subcutaneous tissue space due to the increase of local pressure, so that the free water moves to the lower pressure, so there is a depression, the free water returns to the original after the finger is released. Time is the time for the depression to calm down.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.