Call 911 immediately, then focus on keeping the person still, warm, and conscious until paramedics arrive. An abdominal stab wound can damage multiple organs, but your job as a bystander is straightforward: get professional help on the way, control what you can see, and avoid making things worse. The steps below walk you through exactly what to do and what not to do.
First Steps: Scene Safety and Calling 911
Before you touch anyone, make sure the scene is safe. If the attacker is still present or the area is dangerous, don’t put yourself at risk. Once you’re confident you can approach safely, call 911 or have someone nearby do it while you begin giving care. Tell the dispatcher the wound is a stab wound to the abdomen so they can send the right team.
If you have disposable gloves or any barrier between your hands and the person’s blood, put them on. If not, use a plastic bag, a piece of clothing, or anything that creates a layer. This protects both of you.
Do Not Remove the Object
If a knife or any object is still embedded in the wound, leave it in place. This is one of the most important rules in first aid for stab wounds. The object may be pressing against damaged blood vessels and actually slowing the bleeding. Pulling it out in the field increases blood loss and can expand the wound. Emergency medical teams at the hospital have imaging, surgical tools, and the ability to control bleeding, so removal is their job, not yours.
If the object is long or likely to shift, try to stabilize it. You can pack rolled-up clothing, towels, or bandages around the base of the object so it doesn’t wobble or move with the person’s breathing. The goal is to keep it as still as possible until help arrives.
Handling an Open Wound With No Object
If the knife has already been removed or there’s nothing embedded, you’re dealing with an open abdominal wound. Remove or cut away clothing around the wound so you can see what you’re working with. Here’s where abdominal wounds differ from wounds on a limb: the Red Cross advises against applying direct pressure to an open abdominal wound. Pressing hard on the abdomen can push damaged tissue further or worsen internal injuries.
If organs are visible or protruding from the wound, do not push them back in. Cover them with a moist, sterile dressing if you have one. If you don’t have a first aid kit, clean plastic wrap, a clean plastic bag, or even a damp clean cloth will work. The key is keeping exposed tissue moist so it doesn’t dry out and sticking to the principle that nothing goes back inside the body cavity. If you can, gently rinse the area with clean water to remove obvious dirt or debris before covering it. Then secure the covering loosely with tape or by wrapping clothing around the torso.
Position the Person Correctly
Lay the person on their back with their knees bent and raised. You can place a rolled-up jacket or bag under their knees to hold this position. Bending the knees relaxes the abdominal muscles, which does three things: it reduces pain, lowers pressure on the wound, and helps limit how much internal tissue is exposed if the wound is open.
If you suspect a head, neck, or spinal injury (for example, if the person also fell or was thrown), don’t move them. Leave them in whatever position you found them unless you absolutely must reposition them to perform CPR or control life-threatening bleeding.
Recognizing Shock
Internal bleeding is the biggest danger with abdominal stab wounds, and you often can’t see it. The organs most frequently damaged by abdominal stab wounds are the spleen, liver, small bowel, and major blood vessels. Wounds to the back or sides of the abdomen carry additional risk of kidney damage. Any of these injuries can cause significant blood loss inside the body.
Watch for these signs that the person is going into shock from blood loss:
- Rapid pulse. A heart rate climbing above 100 beats per minute is an early warning sign. As blood loss worsens, it can exceed 120 or even 140.
- Rapid, shallow breathing. The body tries to compensate for less oxygen-carrying blood by breathing faster.
- Changes in mental state. Mild blood loss causes anxiety and restlessness. More severe loss leads to confusion, then drowsiness, then loss of consciousness.
- Pale, cool, clammy skin. Blood flow redirects away from the skin and toward vital organs.
If you notice these signs, keep the person lying flat with knees bent, cover them with a blanket or jacket to maintain body temperature, and keep talking to them. Staying warm is important because the body loses its ability to regulate temperature during shock. Don’t give them anything to eat or drink, since they may need surgery.
What to Do Until Paramedics Arrive
Your role after the initial steps is to monitor and reassure. Keep checking their breathing and responsiveness. Talk to them calmly. Tell them help is on the way. If they lose consciousness and stop breathing, begin CPR if you’re trained to do so.
Don’t let the person get up or walk around, even if they feel okay. Adrenaline can mask the severity of an injury, and movement increases internal bleeding. Keep them still and as comfortable as possible in the knees-bent position.
What Happens at the Hospital
Not every abdominal stab wound requires surgery. In studies of abdominal stab wound patients, roughly 50 to 60 percent were managed without an operation, and those patients had no deaths and very few complications. Doctors use imaging to assess whether the wound penetrated deeply enough to damage organs, and they monitor the patient closely for signs of internal bleeding or infection.
When surgery is needed, it typically involves opening the abdomen to find and repair damaged organs or blood vessels. In a randomized trial comparing immediate surgery to careful observation, patients who were observed first and only operated on when signs of internal damage appeared had a complication rate of 8 percent, compared to 19 percent for those who received automatic surgery. This means hospitals increasingly take a watch-and-respond approach when the wound isn’t obviously life-threatening.
The location of the wound matters. Stab wounds to the left upper abdomen are most common and put the spleen at particular risk. Wounds to the right side are more likely to involve the liver. Wounds in the back or flank can damage the kidneys and other structures that sit deeper in the body. Surgeons use the wound’s location, imaging results, and the patient’s vital signs to decide how aggressively to intervene.
Why Quick Action Matters
The difference between a survivable and a fatal abdominal stab wound often comes down to time. Young, otherwise healthy people can initially appear stable while losing dangerous amounts of blood internally. Their bodies compensate with a faster heart rate and redirected blood flow, but once those mechanisms are overwhelmed, the decline is rapid: blood pressure drops, consciousness fades, and organs begin to fail. Getting emergency medical care started as quickly as possible gives the person the best chance of a good outcome.