Urinary Tract Obstruction in SA

What are the two classifications of urinary tract obstructions?
1. Upper urinary tract obstruction (kidneys, ureters)
2. Lower urinary tract obstruction (bladder/urethra)

What is the most common type of urinary tract obstruction?
Urethral obstruction, and is immediately life-threatening

What are some examples of intra-urethral causes of urethral obstruction?
-Inflammatory disease (not common)
-Foreign bodies (also rare)