A lot of people write fic in which characters who would know better use hydrogen peroxide or alcohol to clean wounds. Both of these substances damage cells and shouldn't be used. Flush open wounds with clean water (preferably sterile or distilled, which you can often buy at grocery stores by the gallon - but tap will do if it's what you have) or saline solution. With non-penetrating wounds use wound scrub or mild soap.
If anyone has any questions about emergency medical care, I've worked for 20 years in veterinary medicine, mostly in specialty practice emergency and critical care, which is very similar to its human counterpart. I've treated injuries as diverse as gunshot/knife/arrow/machete wounds, venomous snake bites, other animal bites, massive multiple trauma (hit by car, long falls, etc - even a hit by train), burns of varying degree and cover, smoke inhalation, toxic ingestion, drug OD, electric shock, drowning... almost any sort of emergency you could think of.
I am also certified in human CPR, first aid, & wilderness first aid, with additional training specific to major disasters and similar large-scale emergencies.
PSA: Wound care - Also can do some medical Q&A
If anyone has any questions about emergency medical care, I've worked for 20 years in veterinary medicine, mostly in specialty practice emergency and critical care, which is very similar to its human counterpart. I've treated injuries as diverse as gunshot/knife/arrow/machete wounds, venomous snake bites, other animal bites, massive multiple trauma (hit by car, long falls, etc - even a hit by train), burns of varying degree and cover, smoke inhalation, toxic ingestion, drug OD, electric shock, drowning... almost any sort of emergency you could think of.
I am also certified in human CPR, first aid, & wilderness first aid, with additional training specific to major disasters and similar large-scale emergencies.