What are the common causes of acute renal failure?

What are the common causes of acute renal failure?

• A. Hypertension, cerebral edema, and gout.
• B. Hypervolemia, infection only.
• C. Hypovolemia, nephrotoxins, and obstructive uropathy.
• D. Pregnancy-related.

Answer: (C)

Acute kidney injury commonly results from factors that decrease kidney perfusion, injure the renal tubules, or block urine output. The three most frequent culprits you’ll see across adults are hypovolemia, nephrotoxins, and obstructive uropathy. Hypovolemia lowers circulating blood volume and effective arterial pressure, reducing renal perfusion and glomerular filtration. Nephrotoxins directly damage the renal tubules or glomeruli; this includes certain medications (like some antibiotics and NSAIDs), contrast agents, and conditions that cause muscle breakdown or heavy metal toxicity. Obstructive uropathy blocks the outflow of urine, causing pressure buildup that impairs kidney function; common causes include stones, an enlarged prostate, tumors, or strictures. These categories cover the most typical pathways to AKI in clinical practice. While other factors like sepsis, severe hypertension, or pregnancy-related conditions can contribute, they’re not as universally the primary culprits as the trio described.

Acute kidney injury commonly results from factors that decrease kidney perfusion, injure the renal tubules, or block urine output. The three most frequent culprits you’ll see across adults are hypovolemia, nephrotoxins, and obstructive uropathy.

Hypovolemia lowers circulating blood volume and effective arterial pressure, reducing renal perfusion and glomerular filtration. Nephrotoxins directly damage the renal tubules or glomeruli; this includes certain medications (like some antibiotics and NSAIDs), contrast agents, and conditions that cause muscle breakdown or heavy metal toxicity. Obstructive uropathy blocks the outflow of urine, causing pressure buildup that impairs kidney function; common causes include stones, an enlarged prostate, tumors, or strictures.

These categories cover the most typical pathways to AKI in clinical practice. While other factors like sepsis, severe hypertension, or pregnancy-related conditions can contribute, they’re not as universally the primary culprits as the trio described.