Venenkanüle

A Venenkanüle, also known as an intravenous cannula or IV catheter, is a medical device used to access a patient's vein. It consists of a hollow needle surrounded by a flexible plastic tube. Once inserted into the vein, the needle is withdrawn, leaving the plastic catheter in place. This catheter then allows for the administration of fluids, medications, blood transfusions, or for the collection of blood samples.

Venenkanülen come in various sizes, indicated by their gauge number, with smaller gauges being finer and larger gauges being wider. The choice of gauge depends on the intended use, such as the viscosity of the fluid to be administered or the size of the vein. They are typically made of plastic materials like polyurethane or Teflon.

The insertion of a Venenkanüle is a common medical procedure performed by trained healthcare professionals. Before insertion, the skin is disinfected, and a tourniquet may be applied to make the vein more prominent. The cannula is then carefully inserted into the vein at an angle. Once blood is seen in the flashback chamber, indicating proper venous entry, the needle is advanced slightly and then withdrawn, leaving the catheter in place. A sterile dressing is then applied to secure the cannula and protect the insertion site.

Potential complications associated with Venenkanülen include phlebitis (inflammation of the vein), infection at the insertion site, infiltration (fluid leaking into surrounding tissue), and thrombosis (blood clot formation). Proper technique, aseptic procedures, and regular monitoring of the insertion site are crucial for minimizing these risks. Venenkanülen are generally removed once intravenous access is no longer needed or if complications arise.