As a core device for clinical intravenous infusion, the standardized operation of intravenous drug delivery devices is fundamental to ensuring treatment safety and improving efficacy. The entire process, from device preparation to the end of infusion, must strictly adhere to standardized procedures and quality control requirements to avoid risks such as infection, leakage, and dosage deviation, ensuring the accurate and stable entry of medication into the patient's circulatory system.
Comprehensive preparation before operation is the starting point for safety. First, the appropriate device type must be selected based on the doctor's orders and the characteristics of the medication: gravity infusion sets can be used for routine fluid replacement, while infusion pumps should be used for micro-dose medications or medications requiring precise rate control (such as vasoactive drugs and insulin); light-protected medications require light-protected infusion sets, and tubing with a precision filter is recommended for hypertonic or irritating medications. Before use, check the integrity of the device packaging and its expiration date, confirm that the infusion tubing is undamaged, the drip chamber and regulator are functioning properly, and the puncture needle or catheter connector is sharp and free of barbs. Simultaneously, verify the drug name, concentration, dosage, and patient information, strictly adhering to the "three checks and seven verifications" principle to avoid incompatibilities or dosage errors.
Establishing intravenous access and connecting devices requires precision and meticulousness. For peripheral vein puncture, select a large, straight vessel with abundant blood flow, avoiding joints and venous valves. Disinfect the skin in a circular pattern with povidone-iodine (diameter ≥8cm), allow it to dry, and then quickly insert the needle at a 15°-30° angle. Once blood return is observed, lower the angle and insert the needle slightly further, ensuring the entire tubing is inserted into the vessel. Securely fix the tubing to prevent displacement. When connecting central venous access (such as PICC, CVC), disinfect the interface and allow it to dry. Use a sterile syringe to aspirate and confirm patency before connecting to the intravenous delivery device. During this process, strictly prevent air from entering the tubing. After connection, purge any air from the tubing. For gravity infusion sets, squeeze the drip chamber to fill with fluid. For infusion pumps, perform self-tests and parameter settings according to the instruction manual.
Dynamic monitoring of the infusion process is crucial. Before starting the infusion, double-check the parameters: For gravity infusion sets, adjust the drip rate (usually 40-60 drops/minute for adults, reduce for children); for the infusion pump, input the target flow rate (ml/h or μg/kg/min) and confirm the units are correct. During infusion, regularly monitor the puncture site for redness, swelling, or leakage, and observe for adverse reactions such as pain or chills. Closely monitor the drip or pump rate to ensure it matches the set values. If any abnormalities are found (such as a sudden increase in drip rate or a pump alarm indicating blockage), immediately stop the infusion and investigate for possible causes such as tubing kinks, needle adhesion to the infusion wall, or device malfunction, and address accordingly. For medications requiring strict time control (such as high-concentration potassium salts or chemotherapy drugs), a designated person should time and record the infusion to prevent exceeding the time limit or premature infusion from affecting efficacy.
The infusion and device disposal must be handled according to standardized procedures. When gravity-assisted infusion is finished, first turn off the regulator, then disconnect the infusion set from the puncture needle. Apply pressure to the puncture site with a sterile cotton swab for 5-10 minutes (up to 15 minutes for patients with abnormal coagulation function). After confirming there is no bleeding, cover with a dressing. After the infusion pump is finished, follow the "stop-turn off-disconnect tubing" sequence to avoid backflow. Disposable devices must be disposed of as medical waste and are prohibited from reuse; reusable parts (such as some pump tubing) must be strictly cleaned, disinfected, and sterilized before use. Finally, record the infusion start and end times, actual dosage, patient response, and handling results of any abnormalities to provide a basis for subsequent treatment.
The operation of intravenous drug delivery devices is essentially a manifestation of "precision" and "responsibility"-every step must be centered on patient safety, reducing human error through standardized procedures and addressing potential risks through dynamic monitoring. Only by internalizing these standards can this "lifeline" truly play its role in protecting health.