With the development of modern nursing technology, central venous catheterization has been widely used because it can be placed in the patient's vein with a catheter, allowing multiple infusions to be administered in a short period of time, reducing the patient's repeated puncture pain and vascular injury. However, after the placement of a catheter, redness, swelling, and vein inflammation are prone to occur, which not only affects the reuse of blood vessels, but also causes unnecessary pain and economic losses to patients. Therefore, it is very important to protect the veins. Generally, the duration of catheterization is 3 to 5 days, and the main factor affecting the duration is the occurrence of vein inflammation. The occurrence and degree of vein inflammation are related to the infusion of highly concentrated and highly irritating drugs over a long period of time, the prolonged placement of plastic tubes with large stimulations in the veins, and excessive infusion volume. In recent years, many hospitals have conducted research on the application of hydrocolloid dressing for external application after central venous catheterization and achieved satisfactory results.
Hydrocolloid dressing can effectively protect veins. Its main component is a hydrophilic hydrocolloid with strong self-dissolving and wound clearance ability. It can selectively remove necrotic tissue, form low oxygen tension, stimulate the release of macrophages and interleukins, and has certain anti-infection ability, promoting local blood circulation, accelerating the repair of inflammatory reactions, and having good absorbency and permeability, preventing water and bacteria penetration, and avoiding bacterial infections. The hydrocolloid has good elasticity, strong compliance, and is not easily deformed or detached from the skin. It provides a certain environment for vascular repair and can protect exposed nerve endings, reduce pain. Moreover, it is easy to operate and is worth promoting in clinical practice.
During the intravenous infusion of somatostatin for patients with digestive bleeding or acute pancreatitis, the occurrence rate of vein inflammation significantly increases due to bleeding and fasting requiring a large amount of fluid and potassium supplementation. However, hydrocolloid dressing can form low oxygen tension, stimulate the release of macrophages and interleukins, promote local blood circulation, and accelerate the resolution of inflammation. The hydrocolloid dressing is composed of a mixture of hydrophilic gel-like particles such as gelatin, pectin, and methylcellulose. It can absorb small to medium amounts of exudate, has the function of self-dissolving and debridement, clearing necrotic tissue, absorbing exudate and toxic substances, and forming gel to protect nerve endings and reduce pain. At the same time, it can retain the original biological active substances of the wound, accelerate vascular regeneration, increase the function of white blood cells, increase local bactericidal ability, promote edema and congestion absorption, alleviate the release of free serotonin and other substances due to drug extravasation, stimulate local pain and swelling caused by peripheral nerves.