Pyelonephritis refers to inflammation of the kidney pelvis, mostly caused by bacterial infection, generally associated with urinary tract infection in clinic is not easy to distinguish. According to the clinical course of the disease and disease, acute and chronic pyelonephritis can be pided into two stages, chronic pyelonephritis is an important cause of chronic renal insufficiency.
The reason is pyelonephritis (1) because of the female urethra is short, easy to bacterial invasion, the chances of infection, the incidence of female is higher than male 8~10 times.
The reason is pyelonephritis (2) female urethra, Escherichia coli, sexual intercourse is an important cause of infection.
The reason is pyelonephritis (3) pregnant women with estrogen secretion, reduce the ureter tension, peristalsis is abate, cause urinary tract smooth, urine reflux and higher incidence of the urinary tract infection during the pregnancy, the majority of kidney and nephritis. Kidney and nephritis by ascending infection caused by cystitis, especially bladder ureteral reflux, is an important reason for ascending infection.
The reason is pyelonephritis (4) such as the treatment of cystitis failed to timely or adequately, about 30~50% upstream cause pyelonephritis.
The reason is pyelonephritis (5) urinary tract obstruction, such as urinary tract stones, tumors, stenosis, prostatic hypertrophy and neurogenic bladder, resulting in poor urine flow, local antibacterial ability decrease, is conducive to infection and increased pressure, is an important cause of renal pelvis nephritis. About 60% of patients with urinary tract obstruction complicated with renal nephritis.
The reason is pyelonephritis (6) renal parenchymal disease, such as glomerulonephritis, renal cysts, renal tumors and chronic tubulointerstitial disease. Can reduce the local antibacterial ability of the kidney, kidney nephritis.
The reason is pyelonephritis (7) systemic factors, such as diabetes, hypertension, chronic low blood potassium, heart failure and many chronic wasting disease complicated with renal pelvis nephritis. Some scholars believe that, in addition to the uplink sexy, nephritis can also be directly infected by blood and lymph nodes and adjacent organs, and there is a certain relationship with the immune.