Glomerulonephritis (Renal insufficiency) means impair of the renal function. Renal insufficiency can be acute or chronic, dependent of the length of period.
Renal insufficiency appears as a result of deferent causes which divide into three groups:
Causes of renal vascularization - some shock situations, (allergic shock, severe haemorrhages haemolysis, obstruction of the renal artery or vein), the blood flow in the kidneys is impaired and they can't function normally.
Causes in the kidneys - there are some diseases which are damaging the renal parenchyma (working tissue), or some toxic effects of external agents (some medicines).
Causes in the urethras, bladder, or urethra - they comprise some rare total occlusions of the urinary tract, which are blocking definitively the urine evacuation. The acute renal insufficiency is characterized by stopping urine evacuation and develops comparatively quickly: from several hours to several days. It is often reversible. Chronic renal insufficiency develops slowly and gradually and is end stage of different diseases, which damage kidneys constantly and irreversible, and al their
