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Category:

Contrast-Induced Nephropathy

Specialty: Nephrology

Category: Iatrogenic Renal Disorders

Symptoms:
reduced urine output; nausea; fatigue; shortness of breath; swelling in legs or feet

Root Cause:
Administration of contrast media causes direct tubular toxicity, oxidative stress, and renal vasoconstriction, leading to decreased renal function.

How it's Diagnosed: videos
Rise in serum creatinine within 48-72 hours of contrast exposure; urinalysis and imaging may support diagnosis.

Treatment:
Discontinuation of nephrotoxic agents, aggressive hydration with isotonic saline, and supportive care to manage symptoms.

Medications:
Antioxidants like N-acetylcysteine are sometimes used to reduce oxidative damage, though efficacy is debated. Intravenous bicarbonate may also be used to alkalinize urine and reduce toxicity.

Prevalence: How common the health condition is within a specific population.
Occurs in approximately 1-5% of patients with normal kidney function and up to 50% in those with chronic kidney disease.

Risk Factors: Factors or behaviors that increase the likelihood of developing the condition.
Chronic kidney disease, diabetes, dehydration, high doses of contrast media, and concurrent use of nephrotoxic drugs.

Prognosis: The expected outcome or course of the condition over time.
Typically reversible with prompt treatment, but severe cases can lead to prolonged kidney injury or chronic kidney disease.

Complications: Additional problems or conditions that may arise as a result of the original condition.
Persistent AKI, need for dialysis, chronic kidney disease, and increased mortality in high-risk patients.