Disadvantages of blunt needles for dialysis

The blunt dialysis needle puncture is used for the buttonhole puncture method. The so-called buttonhole puncture method means that the point and angle of puncturing the needle into the dialysis patient are exactly the same each time, that is, each time the needle enters the blood vessel, it is the same part, so it is better to establish beforehand. The subcutaneous tunnel facilitates the successful puncture. Blunt needle aspiration may fail if it is not established well before.

In addition, the skin must be disinfected before blunt needle puncture, and the work of removing skin scabs should be done well, otherwise it may be easy to bring the skin scabs into the blood vessels, resulting in a significantly higher chance of internal fistula infection. Therefore, blunt needle puncture must pay attention to establish a good subcutaneous tunnel, and do a good job of disinfection and scab removal before puncture.

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