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High bladder pressure during urine storage is a main reason of upper urinary tract damage by voiding dysfunction diseases
Pakistan Journal of Medical Sciences. 2012; 28 (4): 716-721
in English | IMEMR | ID: emr-132267
ABSTRACT
Upper urinary tract damage secondary to voiding dysfunction is an important reason for the end stage of renal diseases. We evaluated clinical manifestations and outcomes of various treatments, and analyzed underlying mechanism in order to improve guidance for their therapy. Two hundred seventy one patients suffering from upper urinary tract damage caused by voiding dysfunction diseases from Jan. 1999 to Oct. 2009 were enrolled and data of urodynamics, urinary imaging and renal functions before and after treatments were retrospectively analyzed. Bladder pressure was over 40 cm H[2]O in 78.2% of the patients, and among them, the average pressures for the first voiding desire was 42.3 +/- 6.0 cm H[2]O with the maximum bladder pressure of 67.3 +/- 5.8cmH[2]O in 271 patients. In 157 patients the residual urine bladder volume was 100ml, but smaller and moderate residual urine volume was occurring in 37.9% of the upper urinary tract damage patients, which implied that residual urine is not an appropriate indicator. 89.3% of the patients exhibited bladder outlet obstruction and 95.2% of those suffered moderate to severe LUTS. After the relief of obstruction treatment and resulting intravesical pressure reduction, 264 patients showed a good recovery and in 202 of them hydronephrosis have disappeared and their renal function returned to normal, due to reduced bladder pressure. We found that high bladder pressure is the main reason of upper urinary tract damage caused by voiding dysfunction. Thus, attention should be paid in order to achieve and maintain reduced bladder pressure below the safety line
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Index: IMEMR (Eastern Mediterranean) Language: English Journal: Pak. J. Med. Sci. Year: 2012

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Index: IMEMR (Eastern Mediterranean) Language: English Journal: Pak. J. Med. Sci. Year: 2012