Stage 1B and Stage 2 Construction Environmental Management ...
2-Stage of decompensation
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Transcript of 2-Stage of decompensation
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2-Stage of decompensation
progressive urethral obstruction &presence of infection decompensation of the detrussor may occur result in
high residual urine may reach up to 500 ml or more.
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Pathogenesis &Pathology:• Upper tract: 1-Ureter: -In early stage the intravesical pressure is not transmitted into the ureters because of the competence of the ureterotrigonal unit. -Later hypertrophy of trigone. -Vesicoureteral reflux. -Intravesical pressure transmitted to urete and pelvis. -Thickening and tourtiousity of the ureter.
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2-The kidney: -The pressure in the renal pelvis is zero. -Increase pressure due to obstruction or reflux lead to hydronephrosis> Stage of compensation: Stage of decompensation:
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• Effect of hydronephrosis on the kidney: 1-The early changes: The end of the normal calyx is concave with increase
pressure it becomes convex(clubbed). Changes in the parenchyma are due to: a-Compression atrophy. b-Ischemic atrophy mainly manifested in arcuate vessels that run at the base of the pyramid.
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