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KMID : 1149020180200010077
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Journal of Korean Society of Computed Tomographic Technology
2018 Volume.20 No. 1 p.77 ~ p.82
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A study of the risk of extravasation according to the time of contrast medium fixation at the CT in the emergency room
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Kim Geon-Tae
Lee Jong-Sun
Heo Jeong-Hwan
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Abstract
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Purpose : Most of the examination in the emergency CT laboratory results in a series of tests and checks to instantly identify patient’symptoms. Therefore, it takes longer time to fix the contrast medium at room temperature. Let's look at ways to reduce extravasation that can occur due to temperature drop.
Materials and method : Four contrast media (Ultravist300 1000 ml, Optiray 320 500 ml, Iobrix300 500 ml, Iomelon350 500 ml) were stored in a Heating Cabinet (Fine HNC WH006-S2A) for 8 hours and then at room temperature of 23 ℃. Using an infrared thermometer (Dretec o-603), the temperature was measured in 5 minutes for 1 hour. After that, the temperature was measured for a total of 3 hours in a unit of 30 minutes. And filled the syringes of auto injector (MEDRAD-STELLANT) with a contrast medium stored at room temperature. It was measured in 5 minutes for 30 minutes. In this way, measured time the contrast agent was warmed up.
Result : The results showed that each contrast medium heated to 40 ℃ temperature dropped 5 ℃~7 ℃ degrees in a single hour. After 2 hours, the four contrast medium dropped below 30 ℃. It is a very inadequate temperature for inspection. The contrast medium stored at room temperature showed 4 ℃ rise when heated in syringe of Auto Injector for 30 minutes.
Conclusion : In occasional testing environments such as emergency rooms, the use of large doses of contrast medium is avoided. The longer the interval between enhance tests, the patient waits for more than 10~15 minutes and syringe of auto injector should be warmed up to increase the contrast agent temperature. By doing so, the extravasation that can occur to the patient can be reduced. And the patient discomfort can be reduced.
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KEYWORD
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Contrast medium, temperature, Extravasation
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