RT Journal A1 Eng RK, Munsif AN, Yangco BG, Smith SM, Chmel H T1 SEizure propensity with imipenem JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1989 FD August 1 VO 149 IS 8 SP 1881 OP 1883 DO 10.1001/archinte.1989.00390080131029 UL http://dx.doi.org/10.1001/archinte.1989.00390080131029 AB • Five patients with seizures related to imipenem administration are described. The potential of imipenem therapy to cause seizure was further studied in a mouse model and compared with the potential for seizure with penicillin and cefotaxime therapy. Penicillin caused ataxia and seizure at a mean mouse serum level of 5800 μm/mL, cefotaxime at 3400 μm/mL, and imipenem at a much lower serum concentration of 1900 μm/mL. The potent activity of imipenem therapy against bacteria, allowing for a clinical dose of only 2 g/d, is unfortunately offset by its higher propensity to induce neurologic symptoms in humans and mice at much smaller doses than would therapy with penicillin G or the cephalosporins, such as cefotaxime.(Arch Intern Med. 1989;149:1881-1883)