To prevent bruises on your arms after having your blood drawn, apply pressure like this!

Sometimes, when you go to the hospital for a physical examination, the doctor will definitely draw blood for testing. Many people will encounter a problem after the blood test, that is, bruises on the arm. If it is not treated in time, it may not disappear for a long time. So, how can you prevent bruises on the arm after blood test?

How to prevent arm bruises after blood draw

The pressing area should be large

Use your thumb to press the needle hole and the blood vessel 0.5 cm above the needle hole longitudinally for 3-5 minutes, and keep your thumb basically parallel to your arm. This can increase the pressing area, so that the skin needle hole and the blood vessel wall needle hole are pressed at the same time, which can prevent subcutaneous bleeding. In addition, when removing the needle, you can also use your ring finger, middle finger, and index finger to press the skin puncture point and the blood vessel puncture point simultaneously along the direction of the blood vessel. The purpose of this method is also to increase the contact area and avoid the occurrence of subcutaneous congestion.

The pressing method should be correct

1. Press only, do not knead

Gently rubbing the needle hole will not only fail to stop bleeding, but will also accelerate bleeding, which is counterproductive. Do not move the arm where blood is collected and do not measure blood pressure on this arm in a short period of time. The purpose is to prevent sudden changes in vascular pressure that may cause subcutaneous bleeding.

2 Continue pressing

Some patients press and check while pressing to see if there is bleeding. This not only affects the speed of hemostasis, but also easily leads to blood stasis. Compression hemostasis is to temporarily block the local blood flow by compressing the local blood vessels. This pressing and checking method will cause the local blood flow to form a cycle of blockage-recovery-blockage-recovery..., forming an intermittent coagulation process. During the recovery process, blood quickly overflows from the damaged blood vessel wall to the subcutaneous tissue, causing subcutaneous blood stasis. Therefore, it is necessary to press continuously with uniform force until the bleeding stops.