Here's what rhymes with intraoperative.

Consider these alternatives

preoperative / postoperative institutionalisation / relation palliation / relation neurophysiological / logical peening / meaning postoperative / preoperative aconitine / been extravasation / operation hemodynamic / dynamic cauterization / information electrocardiography / cardiography diazomethane / phenyldiazomethane diuresis / overdiuresis deoxygenation / education reapplication / education hemagglutination / information