Certified Clinical Hemodialysis Technician (CCHT) Practice Exam 2025 - Free CCHT Practice Questions and Study Guide

Post-renal failure occurs as a result of obstruction in the urinary tract that prevents urine from flowing out of the kidneys. This condition leads to increased pressure within the renal system and can ultimately impair kidney function. Benign Prostatic Hypertrophy (BPH) is particularly relevant here as it involves the enlargement of the prostate gland, which can compress the urethra and restrict urine flow. This obstruction can cause back pressure that affects kidney function, making BPH a significant potential cause of post-renal failure.

Kidney stones can also cause obstructions, but they typically lead to acute episodes rather than chronic issues that would often be classified under post-renal failure. Diabetes and hypertension are primarily associated with renal parenchymal issues, affecting the kidneys directly through glomerular damage rather than causing post-renal failure through obstructions. Therefore, BPH is the most direct and likely cause of post-renal failure among the choices given.