経腸栄養：中心静脈栄養

Parenteral nutrition, or PN, is a crucial medical intervention that directly delivers nutrients like carbohydrates, fats, proteins, vitamins, and minerals into the bloodstream.

It is crucial for patients with severe digestive disorders as it bypasses the digestive system.

PN is administered through Central or Peripheral Parenteral Nutrition.

Central Parenteral Nutrition delivers highly concentrated nutrients into the superior vena cava, typically via the subclavian or internal jugular vein, for long-term support.

The procedure begins with informing the patient, gathering supplies, and wearing PPE.

Prepare the insertion site with 2% chlorhexidine, followed by lidocaine gel for anesthesia.

The patient is then positioned supine Trendelenburg to dilate the neck and shoulder blood vessels, turning their head away from the venipuncture site.

A large-bore needle is inserted under the clavicle into the vein, followed by a radiopaque wire over which the catheter is advanced.

After removing the needle, the catheter is connected to IV tubing and secured with a dressing using a sterile technique.

Finally, confirm catheter placement with X-ray imaging for accurate positioning and to reduce comp