Treatment of blood sampling failure of vacuum venous blood collection needle






1. The blood collection needle slips out of the blood vessel: Generally, the blood collection needle is not fixed or is not fixed firmly, which is caused by being pulled. Treatment measures: Fix the needle handle with tape after successful puncture to prevent the needle handle from sliding and causing the needle to protrude from the blood vessel.
2. Hemolysis: The vacuum negative pressure is relatively large, and the blood flows into the test tube rapidly during the operation, and the blood collides with the test tube wall to cause hemolysis; when collecting the vacuum negative pressure tube with anticoagulant, the swing is too violent during the blood collection process, causing hemolysis . Treatment measures: The vacuum tube should be inclined at 45°, and the inclined surface of the blood collection needle should be close to the test tube wall to allow the blood to flow slowly.
3. The vacuum negative pressure tube does not suck blood smoothly or does not suck blood: mainly because the strong negative pressure in the test tube causes the front needle bevel to be close to the blood vessel wall or because the vacuum in the tube is not enough. Handling measures: Move the needle position gently by holding the needle wing, and replace the unused blood collection tube.