1 Causes of hemolysis of specimens occurring in venous blood collection
The test personnel in the collection of blood specimens, the operator more than the tourniquet tied too long, too tight, plus the force to beat the puncture site and cause hemolysis. Due to the poor fixation of the needle, so that the beveled surface of the needle on the wall of the blood vessel, resulting in a large number of bubbles mixed in the blood. The operator did not follow the operating procedures, instead of injecting the blood slowly along the vessel wall, he injected the blood too fast, causing the foam to be injected into the test tube together with the blood, thus causing hemolysis. The operator is too hard to shake the test tube and cause hemolysis, the specimen lyser is not qualified, the quality of the needle is not good, the seal is not good, resulting in hemolysis; or the specimen will be placed on the window sill, not sent for examination in a timely manner, due to the temperature is too low caused by the freezing of the needle did not puncture into the vein, and so on.
2 Countermeasures to prevent hemolysis of specimens in venous blood collection
Strict implementation of rules and regulations and operating procedures, for this reason, should be regular business training for test personnel to avoid hemolysis in blood collection. In the process of blood collection should strictly do the following: strengthen the operator's sense of responsibility, must be operated in accordance with the operating procedures, will be collected along the blood vessel wall slowly injected, at the same time to gently shake well. Try to send the blood for examination in time, and keep it away from the place with low temperature. When operating, minimize the time of tying a tourniquet, and do not forcefully tap the site of blood sampling. If the blood vessels are not clearly hidden, use hot compresses, let the patient rest for a few moments, and re-select the blood collection site. Skillful grasp of blood collection techniques, reduce the number of times back to the needle, blood collection failure should be replaced with a needle, do not pull out the needle to use again. Pay attention to the observation of the patient's reaction, some patients are particularly nervous before blood collection, at this time, the patient should be told not to be nervous, relaxation, distraction, otherwise it will result in the collection of blood is not smooth, even if the collection of blood will occur hemolysis. Pay attention to strengthen the management of medicine to prevent the use of poor quality empty needle.
3 Relevant health education for patients and their families
Prepare for blood collection according to different patients, such as giving patient explanations to patients who are afraid of blood collection and explaining the importance of blood collection in order to obtain cooperation. For patients whose blood vessels are not obvious and whose blood collection is difficult, hot compresses should be applied to improve the success rate of blood collection. Or they really can not grasp should be asked to teach experienced laboratory personnel to collect blood, in order to reduce the patient's pain, for infants and young children, blood collection should be more careful.
The establishment of a blood collection environment conducive to the physical and mental health of patients, to protect the environment clean, fresh air, light, education of patients and their families do not touch with their hands, do not spit, do not smoke and so on. In particular, when you have taken contaminated items with your hands, you must wash your hands immediately and disinfect them when necessary.
Venous blood collection is an invasive operation, in the process of operation of any part of the negligence, will affect the quality of venous blood collection, so the test personnel in the patient blood collection should have a sense of responsibility and empathy, to be caring and considerate of the patient, enthusiastic about helping the patient in order to eliminate the patient's fear of the heart, and at the same time, to master the blood collection technology, try to a success to alleviate the patient's pain. In the process of blood collection, the patient's interests should be taken into account, and every link of venous blood collection should be emphasized, the rules and regulations of venous blood collection should be strictly implemented, and the legal awareness should be strengthened, so as to effectively prevent hemolysis of specimens in venous blood collection.