Its the tricuspid valve that is located between the left atrium and left ventricle?
Self harm is a very unhealthy way to deal with stress, anxiety, and any other type of unusual situation. It can be very dangerous to your health and leave permanent damage on your body and soul. If you know anyone who is self harming be sure to tell an adult and be as supportive as you can. You never know what someone might be going through! :)
I'm not familiar with first aids but I'm assuming some sort of antibiotic a bandage and or tape along with cotton swabs but hey I'm not a doctor
