No abstract

This study aimed to investigate the protective effect of oral steroid premedication in terms of adverse reactions to non-ionic contrast media. We investigated the incidence of adverse reactions among patients who underwent contrast-enhanced computed tomography. Patients in the premedication group took 30 mg of prednisolone orally the night before and on the morning of the scheduled computed tomography. Sixty-five patients received the same contrast media. Among them, 56 took prednisolone orally prior to the procedure (premedication without change of contrast media group) and nine without premedication (no premedication and no change of contrast media group). In total, 379 patients received different contrast media. Among them, 340 took prednisolone orally (premedication with change of contrast media group), while 39 did not take the premedication (no premedication with change of contrast media group). The adverse reaction rates in the premedication with change of contrast media and no premedication with change of contrast media groups were 1.8% (6/340 cases) and 2.6% (1/39 cases) (P = 0.54), respectively. The incidence of adverse reaction after the administration of non-ionic iodinated contrast media did not differ significantly based on whether an oral steroid was administered prior to compute tomography. Our evaluation is limited due to the small sample size of the contrast media-changed group. However, even if premedication with steroids is effective, it may only result in an adverse reaction reduction rate of ≤3%.

【目的】本研究の目的は，小牧市民病院における時間外の computed tomography(CT) ・magnetic resonance imaging(MRI)において，診療放射線技師の読影の補助業務の有用性を調べることとする． 【方法】対象患者は，当 院の時間外診療時間に CT または MRI が撮像された 2294 人の 2681 検査である．疾患別に緊急度合を緊急性疾 患，準緊急性疾患，非緊急性疾患の 3 群にカテゴリ分類した．また，診療放射線技師群(RTs 群)と研修医師群 (RPs 群) ，上級医師群(SPs 群)で感度，特異度，正確度などを算出した． 【結果】RTs 群の正確度は 87.0% で あった．RTs+RPs+SPs 群の感度は RPs+SPs 群の感度よりも高かった． 【結語】緊急・準緊急性疾患において 診療放射線技師が読影の補助を行うことで感度の向上がみられ，救急医療への有用性が示された．