How to prolong the time of venous indwelling needle

This paper discusses the influencing factors of indwelling time. 1 puncture site is not suitable for patients who can get out of bed. The best choice for indwelling needle is median elbow vein and basilic vein. 2 Operating factors 2. 1 The hose entering the vein during the operation is too short and the limb movements are too intense, which can lead to the slow overflow of liquid from the puncture point, causing inflammatory reaction and greatly shortening the indwelling time. 2.2 The model does not match. Clinically, thicker vein and thinner vein indwelling needle should be selected. There is a certain blood side flow between the sample cannula and the blood vessel, which can reduce the chance of contact between the cannula and the inner wall of the blood vessel. 2.3 The puncture site should avoid the joints, firmly fix the dressing, operate gently, and reduce the movement of trocar back and forth, so as to reduce the mechanical damage to the inner wall of blood vessels. When the piston of venous indwelling needle is stuck in the piston position, the hydrostatic pressure in the stuck cavity is lost. When the distal segment of the extension tube is clamped, the elastic area of the extension tube is correspondingly increased due to the relatively large liquid space, so that the intravascular pressure is greater than the internal pressure of the extension tube, thereby increasing the blood return rate, the corresponding tube plugging rate and the indwelling time. 4. Do a good job in health education to improve the self-care ability of patients. 4. 1 during the indwelling needle, instruct the patient not to excessively move to puncture the side limb, so as to avoid phlebitis and poor blood flow caused by the indwelling needle moving back and forth in the blood vessel, thus shortening the indwelling time. 4.2 In the process of infusion with indwelling needle, continuous hot compress is the best way to puncture limbs, especially wet hot compress. Hyperthermia can improve blood circulation, promote venous return, increase patients' metabolism and phagocytosis of white blood cells, help repair vascular wall trauma and increase patients' local anti-inflammatory ability. 5 Sterile operation 5. 1 Strictly check the packaging and expiration date of indwelling needle to ensure the quality. 5.2 The disinfection scope should be above 8cm. After 2% tincture of iodine is disinfected and dried, 75% alcohol can be used to remove iodine twice, and puncture or replace it after drying. 5.3 After successful puncture, disinfect with 75% alcohol or iodophor. After drying, it is fixed close to the skin with a sterile transparent protective film. 5.4 The detached part of the cannula should not be sent into the blood vessel again, so as to avoid the retrograde invasion of bacteria on the local surface through the open sinus between the skin and the blood vessel, causing bacterial phlebitis and even septicemia, thus shortening the indwelling time and increasing the patient's economic burden and nursing workload. As long as the nursing operation routine is strictly implemented and careful preventive measures are taken, not only the safety of patients can be guaranteed, the occurrence of complications can be strictly controlled, but also the indwelling time of indwelling needles can be guaranteed, and the advantages of continuous indwelling of indwelling needles can be fully exerted, so that patients receiving intravenous infusion treatment can get the greatest protection in intravenous infusion treatment and cost, which truly embodies the nursing theme of "patient-centered".