Precautions for the blunt needle buttonhole puncture method:

① Before buttonhole puncture with a blunt needle, the scab at the puncture point must be thoroughly treated, otherwise it will be unfavorable for the puncture needle to be fed from the buttonhole, and it will also cause bleeding at the local puncture point;

② Use 5% iodophor wet compress for 10 minutes, and remove the scab after the scab is fully moistened and softened;

③ After wetting and removing the blood scab, hold the blunt needle from the puncture point and gently push it inward by twisting slowly.

④ It is necessary to change the habit of rapid needle insertion in the past, and at the same time, it should be noted that the blunt needle puncture is obviously different: there is no sense of breakthrough when entering the blood vessel;

⑤ When you feel that the needle is tight, you cannot use brute force, and the needle should be inserted while twisting;

⑥ If it is difficult to puncture with a blunt needle and the tunnel feeling is not obvious, use an ordinary sharp needle to puncture several times. When puncturing, pay attention to inserting the needle along the original tunnel. When a tunnel is felt, puncture with a blunt needle again to protect the formed tunnel buttonhole. .

Although blunt needle buttonhole puncture is more expensive than ordinary needles, it can effectively protect blood vessels in the long run, reduce the technical difficulty of puncture, and relieve the pain of patients.

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