Clinical application of disposable infusion set not only effectively avoids the occurrence of cross infection, but also is convenient and affordable. However, some problems are often encountered in practical use, such as improper handling, which will cause adverse consequences and even endanger life. Now the experience is introduced as follows.

1. Air enters above the infusion tube

In the process of infusion, if the needle of the infusion tube inserted after the stopper of the infusion bottle is relative to the inclined plane of the ventilation tube needle, and the distance is relatively close, and the position of the ventilation needle is slightly lower than the position of the needle of the infusion tube, the suction force generated by the liquid velocity in the infusion tube will suck the bubbles generated by the ventilation needle into the infusion tube. In addition, the needle inserted into the stopper of infusion bottle is not stable due to its thin surface. If the infusion tube is affected by external forces such as the patient's body moving, the needle head of the infusion tube connected with it will also move in the corresponding direction and position. Subsequently, whether the infusion tube is air intake or not also changes depending on whether the needle of the infusion tube and the ventilation needle are in the position of air intake after moving. If the two needles are in the air intake position, air can enter the infusion tube from the needle head of the infusion tube.

handle:

(1) To prevent the air from entering the upper part of the infusion tube, when inserting the needle into the bottle plug with the infusion tube or changing the liquid, the inclined planes of the two needles should be avoided and a certain distance should be kept;

(2) During infusion, if it is found that there is air intake above the infusion tube, one of the two needles should be rotated immediately, and the inclined plane direction of the needle head should be turned so that the inclined direction of the needle head is backward, which can immediately prevent the air from entering.

2. The liquid leaked from the air pipe

In order to prevent the liquid from flowing out, the usual method is to pull out the ventilation needle on the bottle plug of the infusion tube, or hold the ventilation tube with hands or clamp for a moment, and then insert the ventilation needle into or open the vent pipe after a certain amount of liquid is injected. This is both time-consuming and wasteful.

handle:

(1) In order to prevent liquid leakage, when adding liquid medicine into the infusion bottle, pay attention to the amount of air extracted is greater than or equal to the amount of liquid medicine added;

(2) In the case of liquid leakage, the needle of the infusion tube can be pulled out, and the infusion bottle can be reversed to make the air in the bottle escape from the ventilation needle. When the air pressure inside and outside the bottle tends to be balanced, then insert the needle of the infusion tube to stop the leakage.

3. Venous blood return

In clinical transfusion, the negative pressure in the infusion bottle is large, resulting in more blood reflux, which is easy to cause psychological pressure to patients. Treatment: when changing the liquid, first insert the ventilation needle into the stopper of the infusion bottle, and then insert the needle of the infusion tube after the negative pressure in the infusion bottle becomes positive pressure, so as to avoid the phenomenon of blood flowing back into the infusion tube.

4. Fluid infusion stopped with blood return

Sometimes the infusion is midway, the liquid input stops, and the blood continuously flows back into the silicone tube of scalp needle. After pressing with the hand, the blood can be squeezed into the blood vessel, and after releasing the hand, the blood will continue to flow back. In the treatment, another unobstructed needle can be inserted into the stopper of the infusion bottle to restore the normal state of infusion.