Minimal contrast use in carotid stenting: avoiding contrast pitfalls

Area of Science:

• Interventional Cardiology
• Nephrology
• Vascular Surgery

Background:

• Endovascular procedures increasingly use iodinated contrast media, raising concerns about contrast-induced nephropathy (CIN).
• Hypotension is a significant risk factor for acute renal dysfunction during endovascular interventions.
• CIN is a major cause of hospital-acquired acute kidney injury, with incidence varying by patient renal function.

Observation:

• The frequency of CIN ranges from 5% in patients with mild renal insufficiency to 50% in those with severe renal dysfunction and diabetes.
• Patients with dialysis-dependent renal failure undergoing carotid procedures face a 28.6% risk of stroke, death, or myocardial infarction.
• CIN contributes to increased morbidity, prolonged hospitalization, chronic kidney disease, and mortality.

Findings:

• Pharmacological agents for CIN prophylaxis have demonstrated limited or inconclusive efficacy.
• A meta-analysis of N-acetylcysteine trials showed uncertain benefits in preventing CIN.
• Current recommendations emphasize non-pharmacological strategies to mitigate CIN risk.

Implications:

• Effective CIN prevention strategies are crucial to reduce patient morbidity and healthcare costs.
• Further research is needed to identify reliable pharmacological interventions for CIN prophylaxis.
• Optimizing preprocedural care, including fluid management and contrast agent selection, is vital for patient safety.