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  • Title: A randomized trial of intravenous n-acetylcysteine to prevent contrast induced nephropathy in acute coronary syndromes.
    Author: Jaffery Z, Verma A, White CJ, Grant AG, Collins TJ, Grise MA, Jenkins JS, McMullan PW, Patel RA, Reilly JP, Thornton SN, Ramee SR.
    Journal: Catheter Cardiovasc Interv; 2012 May 01; 79(6):921-6. PubMed ID: 21542122.
    Abstract:
    BACKGROUND: Pharmacokinetic data suggests that the intravenous form of n-acetylcysteine (NAC) may be more effective than the oral formulation in preventing contrast induced nephropathy (CIN). NAC owing to its anti-oxidant properties might be beneficial for patients with acute coronary syndromes (ACS) who are at increased risk for CIN. The aim of this prospective randomized, single-center, double-blind, placebo controlled trial (NCT00939913) was to assess the effect of high-dose intravenous NAC on CIN in ACS patients undergoing coronary angiography and/or percutaneous coronary intervention (PCI). METHODS: We randomized 398 ACS patients scheduled for diagnostic angiography ± PCI to an intravenous regimen of high-dose NAC (1,200 mg bolus followed by 200 mg/hr for 24 hr; n = 206) or placebo (n = 192). The primary end-point was incidence of CIN defined as an increase in serum creatinine concentration ≥ 25% above the baseline level within 72 hr of the administration of intravenous contrast. RESULTS: There was no difference found for the primary end point with CIN in 16% of the NAC group and in 13% of the placebo group (p = 0.40). Change in serum cystatin-C, a sensitive marker for renal function, was 0.046 ± 0.204 in the NAC group and 0.002 ± 0.260 in the control group (p = 0.07). CONCLUSION: In ACS patients undergoing angiography ± PCI, high-dose intravenous NAC failed to reduce the incidence of CIN.
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