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Urinary Tract Calculi VI: Surgical Management01:25

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
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Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

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Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
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Urinary Tract Calculi I: Introduction01:28

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Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
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Urinary Tract Infection I: Introduction01:26

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Urinary tract infections (UTIs) impact various parts of the urinary system, including the kidneys, ureters, bladder, and urethra. These infections are generally bacterial, with Escherichia coli being the most common causative agent, often originating from the gastrointestinal tract. However, other bacteria, such as Staphylococcus saprophyticus, Klebsiella pneumoniae, and Proteus mirabilis, are also known to cause UTIs. The type, location, and underlying complexity of the UTI guide both...
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Ureters01:22

Ureters

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The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...
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Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
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Related Experiment Video

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Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis
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Tubercular ureteric strictures.

Maneesh Sinha1, K N Chacko, N S Kekre

  • 1Department of Urology, Christian Medical College, Vellore, India.

JPMA. the Journal of the Pakistan Medical Association
|November 25, 2005
PubMed
Summary
This summary is machine-generated.

Open surgical repair is more effective than balloon dilatation for managing ureteric strictures caused by tuberculosis (TB). Renal function is a key factor in predicting the success of balloon dilatation for TB ureteric strictures.

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Area of Science:

  • Urology
  • Infectious Diseases
  • Surgical Management

Background:

  • Tubercular ureteric strictures are a significant complication of genitourinary tuberculosis.
  • Presentation often includes lower urinary tract symptoms and may be associated with genital abnormalities.
  • Diagnosis relies on urine analysis and imaging, with aseptic pyuria being common.

Purpose of the Study:

  • To review the clinical presentation of tubercular ureteric strictures.
  • To assess and compare the efficacy of balloon dilatation versus open surgical repair in managing these strictures.

Main Methods:

  • Retrospective review of 73 cases of tubercular ureteric strictures managed between 1993 and 2002.
  • Analysis of clinical presentation, diagnostic findings, and treatment outcomes.
  • Comparison of long-term success rates between balloon dilatation and open surgical repair using statistical analysis.

Main Results:

  • 88% of strictures presented with lower urinary tract symptoms; 40% of males had genital TB abnormalities.
  • Urine analysis showed aseptic pyuria (85%), positive AFB smears (36%), and cultures (32%).
  • Open surgical repair achieved 90% success at 7 months, superior to balloon dilatation (p=0.03). Long-term success for balloon dilatation was 78% in good function units vs. 25% in poor function units (p=0.01).

Conclusions:

  • Open surgical repair demonstrates superior outcomes compared to balloon dilatation for tubercular ureteric strictures.
  • Pre-existing renal function is a critical predictor of success for balloon dilatation interventions.