In this randomized trial of 144 patients with mild renal insufficiency (creatinine 1.1-2.0) undergoing elective cardiac catheterization, they were randomized to a single 20meq HCO3 bolus before contrast, and all received hydration. The incidence of nephropathy within 3 days (25% or 0.5 increase from baseline creatinine) was significantly lower in the HCO3 group (1% vs 13%). A single HCO3 bolus before contrast (added to hydration) appears to be effective in reducing post-procedure nephropathy in patients with mild renal insufficiency (abstract).
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