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N-acetylcysteine as Prophylaxis Against Contrast-Induced Nephropathy: A Meta-Analysis.

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Summary
This summary is machine-generated.

N-acetylcysteine (NAC) does not prevent contrast-induced nephropathy. This meta-analysis found no significant reduction in acute kidney injury, need for dialysis, or mortality with either oral or intravenous NAC administration.

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Area of Science:

  • Nephrology
  • Pharmacology
  • Radiology

Background:

  • Contrast-induced nephropathy (CIN) is a significant complication following radiographic contrast media administration.
  • N-acetylcysteine (NAC) has been proposed as a prophylactic agent to mitigate CIN.
  • Evidence regarding the efficacy of NAC in preventing CIN remains inconclusive.

Purpose of the Study:

  • To systematically evaluate the effectiveness of N-acetylcysteine (NAC) in preventing contrast-induced nephropathy (CIN).
  • To analyze the impact of both oral and intravenous NAC administration on key renal outcomes.

Main Methods:

  • A comprehensive literature search was conducted in PubMed and Cochrane CENTRAL.
  • Forty-nine relevant studies were included in the meta-analysis.
  • Outcomes assessed included acute kidney injury (AKI), need for hemodialysis (HD), and mortality.

Main Results:

  • Oral NAC showed no significant difference in AKI incidence (OR: 1.00; 95% CI: 0.90-1.11; p = 0.98), HD need (OR: 0.94; 95% CI: 0.61-1.46; p = 0.79), or mortality (OR: 1.08; 95% CI: 0.83-1.41; p = 0.55).
  • Intravenous (IV) NAC also demonstrated no significant benefit for AKI (OR: 0.84; 95% CI: 0.67-1.04; p = 0.19), HD need (OR: 0.74; 95% CI: 0.19-2.86; p = 0.66), or mortality (OR: 1.11; 95% CI: 0.67-1.85; p = 0.68).
  • Subgroup analysis of oral NAC dose (low vs. high) did not alter these findings.

Conclusions:

  • Neither oral nor intravenous administration of N-acetylcysteine effectively decreases the risk of contrast-induced nephropathy.
  • Current evidence does not support the routine use of NAC for CIN prevention.
  • Further research may be warranted to explore alternative strategies for CIN prophylaxis.