When a Cut Needs More Than a Bandage

Call 911 if bleeding does not slow during the first few minutes of steady direct pressure, or if any part of a finger, hand, toe or limb has been severed or partly severed. Keep the pressure on. Do not peel off a dressing that has soaked through — add more on top.

The most useful sentence about cuts is not about size, depth or stitches. It is about the clock.

The American College of Emergency Physicians:

“If you delay care for only a few hours, even a minor wound can build enough bacteria to cause a serious infection.”

A few hours. That is the answer to “can this wait until morning”, and it comes from emergency physicians rather than from a marketing department. The reason to be seen tonight is usually infection rather than the wound itself.

Stop the bleeding first, and the technique has one counterintuitive step

Firm, direct pressure. ACEP: “Apply firm, direct pressure over a bleeding wound with clean cloth or sterile bandage.”

And if it soaks through — leave it there. “Do not remove them as this may interfere with clotting. Instead apply more bandages directly on top.”

This is the step everybody gets wrong. The instinct is to lift the soaked cloth off and replace it with a clean one, which peels away the clot that was forming. Add, never replace.

Raise it, with one exception. “Elevate the wound unless you suspect the limb is broken.”

Keep pressing. Checking every ten seconds to see whether it has stopped is the same mistake as changing the dressing.

Call 911

• Bleeding that “does not slow during the first few minutes of steady direct pressure”
• A cut that “amputates or partially amputates an extremity” — any part of a finger, toe, hand, foot or limb severed or partly severed
• Bleeding that is spurting, or pooling faster than you can press on it
• A cut alongside a serious injury, a head injury, or collapse

For a severed part: keep it, keep it clean, keep it cool, bring it. Do not scrub it and do not put it directly on ice.

Come in

ACEP says these need professional evaluation:

Cuts “that will not stop bleeding after a few minutes of applying direct pressure.”

Cuts that are “deep, gaping, jagged or potentially disfiguring.”

And practically, come in for:

• A cut you can see into — fat, muscle or anything glistening
• A cut whose edges do not sit together when you release the pressure
• Anything on the face, near the eye, on the lip, or anywhere a scar matters to you
• Hands and fingers, where tendons and nerves sit immediately under the skin
• A cut over a joint, which pulls open every time it moves
• A puncture wound — small hole, deep track, and the least reliable-looking of all of them
• A bite, animal or human
• Anything with glass, grit, metal or debris in it that does not rinse clear
• Numbness, weakness, or an inability to move a finger beyond the cut
• Any cut in somebody with diabetes, poor circulation, or a suppressed immune system

Our emergency rooms repair lacerations and give tetanus shots, they are open every hour of every day, and they are walk-in. Go to the nearest one, and if another emergency department is closer to you, that one is the right answer tonight.

If you are unsure, come in — this list is not exhaustive and you are not expected to judge the depth of your own wound.

Tetanus, which is broader than almost anybody thinks

The rule is ten years. ACEP: “A tetanus shot may be required if you have not had one within 10 years.”

And the list of ways it gets in is the surprising part:

“tetanus bacteria can also enter the body even through a tiny pinprick, a scratch from an animal, splinters, bug bites and even burns.”

A pinprick. A splinter. A bug bite. A burn. Not one of those is a wound most people would take anywhere — and if you cannot remember your last tetanus shot, that is worth raising whatever the wound looks like.

We give tetanus shots at both emergency rooms, so it is a question you can settle in the same visit rather than chasing afterwards.

Signs it is becoming infected

Come back — or come in if you did not the first time — for spreading redness, increasing rather than decreasing pain, swelling, warmth, pus or foul-smelling drainage, a red streak running away from the wound, a fever, or a wound that is not healing.

Pain that is getting worse after the second day is the one to act on. A healing wound hurts less each day.

Questions people actually ask

How big does a cut have to be to need stitches? There is no length that decides it, and anybody quoting one is guessing. Depth, location, edges, contamination and what is underneath all matter more than centimetres — which is exactly why this is assessed in person.

Can it wait until morning? ACEP’s sentence about a few hours is the honest answer. Bleeding that has stopped and a wound that is clean and shallow is a different situation from a deep or dirty one, and the ones that close best are closed sooner.

Should I use antiseptic or alcohol in it? Rinse with clean running water. This page gives no product advice, and pouring alcohol into an open wound damages the tissue that has to heal.

It stopped bleeding on its own. Do I still need anything? Possibly — bleeding stopping says nothing about depth, contamination, or what is under the cut. Location and whether you can see into it matter more.

It is a puncture from a nail. Be seen, and mention the tetanus question. A small entry hole over a deep track is the wound most likely to be underestimated.

My child cut their hand on something in the garden. Rinse it, press it, and have it looked at — garden debris, a hand, and a child together tick three of the boxes above.

It has been three days and it is redder and more painful. That is the pattern to act on today rather than to watch further.

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Press, do not peel, raise it, and be seen sooner rather than in the morning — the risk is infection more than the wound. Call 911 for bleeding that will not slow or any severed part. Both of our emergency rooms are open 24 hours a day, every day of the year — walk in, no appointment and no referral. Find your nearest emergency room →

Related reading: which door do you need · possible broken bones

Sources

48. Cuts and Abrasions — Know When To Go — American College of Emergency Physicians. https://www.emergencyphysicians.org/article/know-when-to-go/cuts-and-abrasions

This article is general information, not a diagnosis. It gives no doses and no product recommendations. If you are unsure, come in — this list is not exhaustive and you are not expected to assess your own wound. If it might be an emergency, treat it as one and call 911.