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What are the methods and techniques for using the tourniquet?
Data: 2022-08-08
What are the methods and techniques for using the tourniquet?
The purpose of pressurizing the pulse band during blood collection is to increase local filling, which is beneficial to improve the success rate. So what are the methods and techniques of pressure pulse area?
The correct operation of the tourniquet is: tighten firsttourniquetObserve the direction of blood vessels and loosen them in time.tourniquet, and then disinfect, tighten again beforepressure pulseTake, and immediately take blood, which is very important for the detection of coagulation items, and strive to complete within 1 minute. Pressure tourniquet compression should not be too long or too tight. If the long tourniquet, blood reflux is blocked, blood vessels dilate, blood pressure increases, blood flow decreases, resulting in fluid loss. So if the tourniquet pressure is not long, water can be transferred from the blood vessels to the tissue, but large molecules and particles (cells) can not be filtered, the blood will be concentrated. It can also promote fibrinolysis or accelerate platelet activation to increase fibrin activity. Therefore, the pulse band should be less than 1 minute, and it is appropriate to enter the blood vessel to loosen the pulse band after entering the needle. When the pulse area was pressed for more than 1 min, the local blood oxygen content decreased, the lactic acid increased, and the pH value decreased. Press for 3 minutes, bilirubin, cholesterol, AST, alkaline phosphatase, etc. It can be increased by more than 5%. Therefore, when taking blood, the compression of the pulse belt should be controlled as much as possible, which can not only improve the success rate, but also reduce unnecessary pain and make the test results more accurate.
PressuretourniquetPrecautions for application: do a good job in nursing safety assessment, such as the elderly who can't speak, slow response, coma, sedation and other special groups, are high-risk groups of nursing safety management. In the application of pressure pulse belt, should be particularly vigilant and care for these. When the belt is carried out, the parts should be fully exposed to avoid clothing or other articles covering the belt, so as not to forget to bring the belt on the body. After each operation, carefully count the number of pressure pulse areas and deal with them. Abide by hospital infection management regulations to avoid hospital infection: one person once, disinfection or disposable tourniquet. During the process, strengthen the inspection and closely observe the situation (such as whether the part is swollen, whether the needle is prolapsed/blocked/extravasated, etc.). Observe the patient's response. Listen to the chief complaint and observe the patient's reaction. In case the child cries, carefully find out the cause of the crying and investigate the hidden dangers. Pay attention to the interruption events in the process of nursing operation, do a good job of handover and avoid mistakes. Fulfill the obligation to inform and assist their families. For example, when giving the patient, help the patient to pose, and be careful not to expose the injected limb in winter to avoid catching cold.
Methods and precautions for correctly binding pressure belts during blood collection: when rubber pulse pressure belts are used, it is necessary to evaluate whether there is a history of latex allergy, and rubber pulse pressure belts are not suitable for those with a history of allergy. The blood pressure band is 7-10cm above the blood collection point. After wrapping the arm for a week, tie a loose knot at the end of the blood pressure band, but do not tie it. Compression pulse zone ligation should not exceed 1 minute. Excess length can lead to hemolysis, hematocrit and false elevation of protein test results. The tourniquet should be one person. If repeated, please after disinfection.
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