The blood return from venipuncture is good, but why is there a bulge?

Infusion is a very common method of treating diseases. Colds, fevers, or people who have just recovered from a serious illness and need to replenish energy can all be treated and conditioned through infusion. However, sometimes special situations may occur during infusion. The blood return from venous puncture is good but a bulge may appear. This is a very common situation and requires a detailed understanding of the needs and then adjustments. The following will introduce why the blood return from venous puncture is good but a bulge may appear.

Under normal circumstances, the adjustment switch during the infusion process will not cause a blister to form at the puncture site. If a blister forms locally, even if the blood return is good, it still means that the blood vessels at the needle site are ruptured and bleeding is occurring. Suggestions: According to your situation, it is recommended that the nurse remove the needle in time and re-puncture.

Several methods for dealing with difficult-to-puncture veins are introduced below. 1. Failure to expose veins 1. The veins of patients with edema are often not obvious. According to the anatomical position of the vein, local pressure should be applied with fingers to temporarily disperse subcutaneous water. It is better to expose the vein before puncture. 2. The veins of obese patients are deeper and less obvious, but they are relatively fixed and do not slide. After feeling them accurately, insert the needle at a 30° angle. After blood returns, lift the needle slightly and insert it into the blood vessel to successfully complete the procedure.

2. Fragile veins: The blood vessels of patients with chronic wasting diseases are relatively fragile , so the needle should be inserted from the side of the blood vessel. When inserting the needle, the direction of the needle should be parallel to the blood vessel. Do not use excessive force when the needle enters the blood vessel. The principle is to go slow rather than fast, and hold the needle steadily. 3. For patients with severe bleeding or fluid loss from empty veins, the veins will become empty and flat due to reduced blood volume. Be especially careful when performing this type of venous puncture. The lifting-up needle insertion method should be adopted, that is, carefully insert the needle into the muscle layer of the blood vessel, lay the needle flat, and lift the needle slightly to separate the front and back walls of the blood vessel, so that the needle tip and the bevel slide into the blood vessel with a sense of loss of obstruction. Even if there is no blood return, the needle has entered the blood vessel and the injection can be performed. 4. For veins with large mobility, you can choose a sharper needle. Use the thumb and index finger of your left hand to fix the two ends of the blood vessel respectively, and insert the needle at a 30-degree angle beside the blood vessel. After the blood returns, lift the needle slightly and insert a little bit along the blood vessel. 5. Superficial small veins: The veins of female patients and children are relatively small , making puncture more difficult. In this case, you can choose a needle with an appropriately small bevel and do a good job of preparation before puncture. You can use hot compresses to fill and dilate the blood vessels to facilitate puncture.

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