How to find blood vessels for intravenous injection

Vein is an important blood vessel that supplies blood to the human heart. Vein also has the important function of transporting nutrients, so intravenous injection therapy is generally used during injection therapy. During intravenous therapy, many people are troubled by the fact that the blood vessels are too small and they are unable to correctly find the human blood vessels. Today I will explain to you in detail some tips on finding blood vessels during intravenous injection.

Intravenous infusion is a routine nursing technical operation that clinical nurses must master. Although it seems simple, it requires many skills. If used properly, it can not only effectively relieve patients' pain, but also improve work efficiency and reduce medical disputes. In the practice of clinical nursing, the author has summarized several skills based on his own work practice and the characteristics of the position. How to prepare liquids When preparing liquids, you must strictly implement the aseptic technical operation principles and the "three checks and seven comparisons" system to avoid using unqualified liquid medicines and prevent infusion reactions.

How to exhaust gas? How can we achieve the purpose of rapid exhaust during intravenous infusion? The method required for exhausting air is as follows: coil the lower infusion tube of Murphy's dropper in your hand and lift it up, so that the Murphy's dropper turns upside down and opens the infusion tube regulator. When the liquid flows into the Murphy's dropper to 1/3, close the regulator, and then put down the infusion tube in your hand. After a small amount of air under the Murphy's dropper automatically escapes to the liquid surface in the Murphy's dropper, open the regulator to make the liquid flow down in drops instead of in a line. Because the pressure in a line is high, the gas in the upper part of the Murphy's dropper can be pressed into the lower tube to form more bubbles; when the medicine flows out from the needle, the regulator can be pushed upward to the bottom of the Murphy's dropper and closed to achieve the purpose of exhausting air.

How to choose blood vessels for the elderly - dorsal vein infusion of hands and feet. The veins of the hands and feet of the elderly, the weak, and patients with multiple chronic diseases are relatively small and superficial, with less subcutaneous fat, poor elasticity, lack of tissue support, and greater mobility, making puncture difficult. Therefore, before puncture, one must carefully understand the characteristics of the blood vessels or physiological abnormalities, and must pay attention to fully exposing them so that their course can be clearly seen and their depth and thickness can be understood. As the peripheral nerves of the hands and feet are more sensitive to pain stimulation, the needle should be inserted quickly, steadily, accurately and gradually, rather shallowly than deeply, to avoid vasoconstriction caused by pain and thus reduce the success rate of puncture.

Before inserting the needle, compare the length of the needle body and the blood vessel to determine the length of the needle. During puncture, the patient does not need to clench his fist, but can use the natural relaxation method. The natural relaxation method is significantly better than the fist-clenching method, and has the advantages of fast needle insertion, fast blood return, and a high rate of blood withdrawal with one needle, which significantly reduces the pain of needle insertion. During intravenous infusion, hold the patient's hand or foot with your left hand, and use your thumb to tighten the skin to fix the lower end of the blood vessel to reduce blood vessel slippage. If the area is difficult to puncture successfully, choose the blood vessels from the lower 1/2 of the back of the hand or foot to the fingers for retrograde puncture.

Pediatric scalp - retrograde intravenous infusion method Usually, scalp intravenous infusion in children is mostly done by retrograde venous puncture at the centripetal end. However, children with long-term infusion have more damaged blood vessels and cannot recover in a short time. If the punctured blood vessels are used for infusion again, the local blood volume will increase, the pressure in the blood vessels will increase, and the liquid can penetrate into the tissue gap through the original needle hole, causing local swelling. Some drugs, if they penetrate into the subcutaneous tissue, can cause tissue necrosis, causing unnecessary pain to the children.

Because the scalp veins of children have a reticular shunt pattern and no venous valves, the rate of retrograde infusion will not be slowed down. Determine the needle insertion angle. The traditional needle insertion angle for venous puncture is 15° to 30°. Clinical practice has found that increasing the needle insertion angle between the needle and the skin makes puncture easier, and because the angle is large, the time to pass through the dermis is reduced, which can reduce the pain caused by the needle or achieve painlessness. Liu Sufen et al. [2] also proved through mechanical analysis and practice that inserting the needle at an angle of 45° or close to 45° is easy and labor-saving, and there will be no phenomenon of the skin being pushed forward with the direction of needle insertion and the lower wall of the blood vessel being punctured.