Impact of Patient Volume on Iodinated Contrast Material Waste with Multidose Contrast Injectors

IF 3.8 2区医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Academic Radiology Pub Date : 2025-04-01 DOI:10.1016/j.acra.2024.12.013

Niloufar Rafiei Alavi, Julie Limfueco, Randall Yamamoto, James Shi, Roozbeh Houshyar, Vahid Yaghmai

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引用次数: 0

Abstract

Background

Multidose iodinated contrast media (ICM) injectors have shown promise in reducing ICM waste. This study aims to evaluate the impact of patient volume on ICM waste reduction in multidose injectors.

Methods

CT studies performed over one-year period with a multidose injector at our emergency CT unit. We recorded the ICM volume, time, and date for each injection and calculated total annual ICM use, accounting for the 500 mL ICM containers' 8-hour window usage limit. We then calculated the ICM waste for the same patient cohort assuming single-dose vials used with single-dose injectors were used instead, without the 8-hour window for usage. To assess the impact of patient volume, we evaluated six subgroups based on daily injected patient counts: Group 1 (< 10 patients/day), Group 2 (10–19 patients/day), Group 3 (20–29 patients/day), Group 4 (30–39 patients/day), Group 5 (40–49 patients/day), Group 6 (≥ 50 patients/day). Annual and mean per patient ICM waste was calculated for both injector types and compared among all subgroups.

Results

In total, across 12,290 scans, multidose injectors reduced annual ICM waste by 86.1% compared to single-use injectors. Annual ICM waste was zero on days with 50 or more patients and was minimal (253 mL) for days with 40–49 patients. A significant negative correlation between patient volume and ICM waste was observed (r = −0.365, p < 0.0001). Mean ICM waste per patient was 2.5 times higher in Group 1 and 71.4% higher in Group 2 with multidose injector compared to single-dose injector. Conversely, in groups with at least 20 patients per day, mean ICM waste per patient was lower with multidose injectors compared to single-dose injectors. Mean ICM waste per patient was reduced by 53.9% in Group 3, 88.9% in Group 4 and 100% in Group 6.

Conclusion

High patient throughput centers with over 40 patients per day can nearly eliminate ICM waste with multidose injectors. However, using multidose injectors in centers with lower patient volumes (<20 patients per day) may lead to increased ICM waste compared to single-dose injectors, underscoring the importance of aligning injector choice with patient volume to optimize resource utilization and minimize waste.

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病人体积对多剂量造影剂碘化造影剂浪费的影响。

背景：多剂量碘造影剂（ICM）注射器在减少ICM浪费方面显示出希望。本研究旨在评估患者数量对减少多剂量注射器ICM废物的影响。方法：在我们的急诊CT单元使用多剂量注射器进行为期一年的CT研究。我们记录了每次注射ICM的体积、时间和日期，并计算了每年ICM的总使用量，计算了500 mL ICM容器的8小时窗口使用限制。然后，我们计算了同一患者队列的ICM浪费，假设使用单剂量注射器使用的单剂量小瓶，没有8小时的使用窗口。为了评估患者数量的影响，我们根据每日注射患者数量评估了六个亚组：第一组(结果：总的来说，在12290次扫描中，与一次性注射器相比，多剂量注射器每年减少了86.1%的ICM浪费。50例及以上患者的年度ICM浪费为零，40-49例患者的年度ICM浪费最小（253 mL）。患者数量与ICM浪费呈显著负相关（r=-0.365）。结论：每天患者超过40例的高患者吞吐量中心使用多剂量注射器几乎可以消除ICM浪费。然而，在病人人数较少的中心使用多剂量注射器(

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来源期刊

Academic Radiology 医学-核医学

CiteScore

7.60

自引率

10.40%

发文量

432

审稿时长

18 days

期刊介绍： Academic Radiology publishes original reports of clinical and laboratory investigations in diagnostic imaging, the diagnostic use of radioactive isotopes, computed tomography, positron emission tomography, magnetic resonance imaging, ultrasound, digital subtraction angiography, image-guided interventions and related techniques. It also includes brief technical reports describing original observations, techniques, and instrumental developments; state-of-the-art reports on clinical issues, new technology and other topics of current medical importance; meta-analyses; scientific studies and opinions on radiologic education; and letters to the Editor.