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    Misunderstanding of using luer lock disposable syringe
     Oct 26, 2021|View:218

    Today, I'd like to talk about "what's wrong with the use of luer lock disposable syringes?", mainly through the following two points. Let's have a look.

    Misunderstanding of using luer lock disposable syringe

    1. Unreasonable dosing method of syringe

    For basic dosing, the luer lock disposable syringe shall be used to immediately inject the drugs into cans or bags of injections. When using the liquid separation bag for dosing, the dosing shall be carried out according to the square tube on the sealed bag. Taking the liquid separation bag used in the hospital as an example, the length of the side tube is 5cm, and the large syringe needle is only 3.3cm, that is, when the needle is added, the drug solution can only be injected into the side tube, but it is impossible to immediately introduce the drug solution into the liquid separation bag, which is likely to produce three conditions:

    ① The drug solution remains in the side tube, which endangers the actual effect of drug treatment: still take the liquid separation bag as an example, the cavity volume of the side tube is 0.4ml, if one is injected

    Liquid, the content can reach 40%, which seriously endangers the actual effect of drug treatment.

    ② When the residual solution is retained in the side tube for a long time, it may cause changes in the physical and chemical properties and medicinal value of the drug, such as fading, deposition, invalidity or toxic and side effects

    Improve, etc.

    ③ If wechat friend is added to another drug in the test tube, the mixing of the two drugs is likely to produce adverse drug reactions.

    2. The preparation method of skin test solution is unreasonable

    When preparing skin test solution, liposuction 0.1ml of drug solution with 1ml luer lock disposable syringe, then liposuction physiological saline to 1m1, stir sufficiently, and specify the different frequency of diluent according to the concentration of drug skin test solution. According to this practical operation, without replacing the needle, the specific source solution concentration of the skin test solution is 0.17m1 (0.07m1 for the needle and breast). Inject 5m1 into the needle, the source solution concentration of the skin test solution is 0.19m1 (0.09mL for the needle and breast), 0.20ml for the 10ml syringe (0.1m1 for the needle and breast), and 0.21ml for the 20ml luer lock disposable syringe (0.11ml for the needle and breast), It is not difficult to see that the source solution concentration of the skin test solution far exceeds the standard use amount of 0.1ml. No matter how many times the diluent is carried out, the skin solution concentration must be higher than the concentration specified in the basic theory.

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