The generation and elimination of air bubbles in the drip tube and tube wall of the disposable infusion set
With the rapid development of modern medical science, medical supplies are constantly updated, and disposable infusion sets have been widely used in clinical practice.
With the rapid development of modern medical science, medical supplies are constantly updated, and disposable infusion sets have been widely used in clinical practice. The upgrading of new products, the continuous emergence of alternative products and the requirements of international standards. With the strengthening of people's self-care awareness, medical safety issues are more and more considerations.
In the process of using the disposable infusion set, we found that the safety, reliability, less infusion reaction and avoiding cross-infection of the disposable infusion set were beyond the reach of the past latex tube infusion set. However, with the widespread clinical application, there are also many shortcomings. Below we mainly introduce the problems that occurred during the use of the infusion set and the corresponding treatment methods as follows:
1 Test conditions and methods
1.1 Temperature conditions:
Place 5 sets of infusion sets and 5 bottles of 0.9% sodium chloride injection in a room with a temperature of 36°C, and place 5 sets of infusion sets and 5 bottles of 0.9% sodium chloride injection in a 14°C refrigerator. Note: The storage time is 4 hours.
1.2 Experimental method:
Use 5 sets of infusion sets with a temperature of 36℃ and 5 bottles of injections with a temperature of 14℃ for simulated infusion experiment. Use 5 sets of infusion sets with a temperature of 14°C and 5 bottles of injections with a temperature of 36°C for simulation experiments.
1.3 Test conclusion:
1.3.1 When using 5 sets of infusion sets stored at 14°C and 5 bottles of injection stored at 36°C, water mist appears on the wall of the drip tube, but it does not affect the use, and the number of drops can be accurately observed. .
1.3.2 During the use of 5 sets of 36°C infusion set and 5 bottles of 14°C injection, there was no water mist on the wall of the drip tube.
1.4 Therefore, it is explained that the weather temperature and indoor temperature will also cause vapor bubbles during the infusion process, especially in the cold weather in winter and the large temperature difference between the storage and use of the disposable infusion set Down.
2. Several problems that should be paid attention to in the clinical use of disposable infusion sets:
2.1 Nurses should try to avoid squeezing the Murphy's dripping pot when exhausting the patient's infusion process, so as to reduce the rapid rush of the liquid into the Murphy's in the infusion set, and a large amount of mixed into the liquid bubble. In addition, care should be taken not to wet the air filter membrane on the exhaust pipe when exhausting. The wet air filter membrane will affect the passage of air and cause poor ventilation.
2.2 When the nurse is exhausting the infusion, it is advisable to put the tip of the infusion needle connected to the infusion set upward. The liquid in the infusion set is discharged to the junction of the infusion set and the infusion needle and the needle slowly discharges 2-3 drops of liquid down. This reduces the air trapped in the needle.
2.3 After the nurses have drained the air in the infusion tube, they should hold the needle horizontally or slightly downward when preparing to puncture the patient. This can prevent air from being sucked into the puncture needle again due to the atmospheric pressure and the gravity of the liquid. (When the puncture needle is facing upwards, a small amount of gas will be found in the puncture needle)
2.4 The height of the liquid level in the Murphy's drip pot should be 2/3, and the minimum should not be lower than 1/2 height. In this way, small bubbles caused by droplets hitting the liquid surface can be avoided. Because the dripping speed is also one of the reasons for the generation of small bubbles, the formed small bubbles are too late to float to the liquid surface, and are collected at the bottom of the Murphy's kettle, especially in the process of a large amount of infusion, usually after the infusion of 250ml -After 500ml of liquid, the bubbles will collect more and more, causing the bubbles to go down the wall of the infusion set until the end of the infusion set, forming bubbles in the liquid medicine filter, which will cause panic during clinical use. Therefore, you must pay attention to the height of the liquid level of the Murphy's dripping pot during the infusion process.
2.5 The ambient temperature of the ward is also an important reason for the large number of adhering air bubbles in the tube wall of the infusion set that cannot be ignored. The temperature of the ward and the treatment room should be the same as possible.
To sum up, through trials and years of clinical experience. With the progress of society, people's awareness of self-care has increased. The safety in the treatment environment is particularly prominent. In clinical work, nurses, on the one hand, must strictly implement the operating procedures, on the other hand, they must think hard and observe more ways to provide patients with better and safer services.