When a finger is pinched with a black blood blister, if the blister is small, it may not need to be punctured. When the blood blister is too large and swollen, the blister needs to be punctured under strict aseptic conditions.
1. Small blood blisters: small black blood blisters can be treated without special treatment when the finger is lightly pinched. Small blood blisters will be slowly absorbed, forming a blood scab that will fall off on its own.
2. Larger blood blisters: When the finger is seriously pinched, the liquid exudation increases in a short time, and larger black blood blisters appear, which may be accompanied by localized swelling. At this time, we can use povidone-iodine disinfectant to fully disinfect the blood blister and the surrounding skin, and then use a sterilized needle to puncture the blood blister and discharge the blood. The punctured wound should then be thoroughly disinfected and the wound should be properly dressed with a wound dressing or band-aid.
The treated wound needs to be disinfected and the dressing changed regularly to prevent wound infection.
After the blood blister is pinched out of the finger, proper rest should be taken, attention should be paid to keep the local cleanliness and hygiene, and the wound of the injured finger should be avoided to get into the water, so that the injured area can recover as soon as possible.