If you’ve been in home health for more than a week, chances are you’ve already met your first wound vac. Maybe it was a Prevena™ after surgery, or maybe it was a traditional wound vac that seemed determined to alarm every five minutes. Either way, wound vacs can be one of the most intimidating parts of home health nursing when you’re first starting out.
The good news is that they get easier with experience. Over time, you’ll learn the little tricks that aren’t always taught during orientation—how to stop stubborn air leaks, protect the periwound, get a better seal the first time, and know when a dressing should (and shouldn’t) be changed. These are some of the practical wound vac tips I’ve learned in home health that have made my visits smoother and hopefully will make yours a little easier too.
- Know which wound vac you’re dealing with.
- Traditional NPWT
- Protect the periwound first
- Dry the skin before applying the drape.
- Cut the drape larger than you think
- Air leaks are part of home health.
- Listen before you look.
- Don’t stretch the drape.
- Cut the foam to fit the wound
- Never let foam bridge healthy skin without protection.
- Count your foam pieces
- Photograph the wound before applying foam.
- Bring extra supplies.
- Teach the patient what to do if the alarm goes off.
- Know when to stop
1. Know which wound vac you’re dealing with.
A Prevena™ wound vac is different from a traditional wound vac because it’s usually placed over a closed surgical incision rather than an open wound. In many cases, home health nurses do not change the dressing unless there is a specific physician’s order. The dressing is often left in place until the patient follows up with their surgeon, who removes it during the postoperative visit.
As the home health nurse, your role is usually to make sure the device is working properly, check for air leaks or alarms, monitor the incision for signs of infection, reinforce patient education, and document your assessment. Before touching or removing a Prevena dressing, always verify the physician’s orders, as many are intended to remain undisturbed until the surgeon evaluates the incision.
2. Traditional NPWT (VAC Ulta, ActiV.A.C., etc.)
These usually require dressing changes every 48–72 hours.
Common tasks include:
- Removing old foam
- Measuring the wound
- Cutting new foam
- Protecting the periwound
- Applying the drape
- Cutting the track pad opening
- Restarting therapy
3. Protect the periwound first.
One of the biggest mistakes new nurses make is applying the drape directly onto fragile skin.
Instead:
- Use skin prep.
- Consider a barrier ring if ordered.
- Frame the wound with drape before placing the foam.
- Protect fragile skin whenever possible.
4. Dry the skin before applying the drape.
Even a tiny amount of moisture can prevent the drape from sealing.
Many experienced nurses:
- Pat the skin dry.
- Wait a minute after applying skin prep.
- Sometimes use a cool hair dryer (if appropriate and available) to ensure the skin is completely dry before placing the drape.
5. Cut the drape larger than you think.
Tiny pieces usually lead to air leaks.
Larger pieces:
- Seal better.
- Require fewer patches.
- Save time.
6. Air leaks are part of home health.
Almost every nurse has chased an air leak around a dressing.
Common causes:
- Wrinkles
- Hair
- Moisture
- Uneven skin folds
- Foam touching intact skin
- Tubing under tension
7. Listen before you look.
Many leaks are easier to hear than see.
Walk around the patient while listening for the hissing sound.
8. Don’t stretch the drape.
Stretching usually causes it to wrinkle later.
Instead:
- Lay it down gently.
- Smooth it outward.
- Avoid pulling.
9. Cut the foam to fit the wound
Foam should:
- Fill the wound bed.
- Avoid overlapping onto healthy skin.
- Not be tightly packed.
10. Never let foam bridge healthy skin without protection.
If you’re bridging to another site:
- Protect the healthy skin underneath.
- Follow your agency’s protocol.
11. Count your foam pieces.
Before leaving:
- Count how many pieces you removed.
- Count how many you inserted.
- Document both.
This is one of the most important safety steps.
12. Photograph the wound before applying foam.
It’s much easier to:
- Measure accurately
- Document tissue types
- See tunneling
- Review progress
before the foam is placed.
13. Bring extra supplies.
Sometimes you’ll need:
- More drape than expected
- Extra foam
- Additional canisters
- Skin prep
- Barrier rings
- Stoma paste
Running out halfway through a dressing change is frustrating for everyone.
14. Teach the patient what to do if the alarm goes off.
Patients should know:
- Don’t just turn the machine off.
- Look for loose edges.
- Reinforce the drape if instructed.
- Contact the home health agency if they can’t stop the leak.
15. Know when to stop.
If you see:
- Active bleeding
- Sudden severe pain
- Exposed blood vessels
- Signs of infection that require immediate attention
- A wound that appears significantly worse than expected
Stop and notify the provider according to your agency’s protocol.
Don’t beat yourself up if you spend 30 minutes chasing an air leak.
Every home health nurse has been there. You think you’ve got the perfect seal, turn the machine on… and then you hear that familiar hissing sound. Sometimes it’s one tiny wrinkle hiding along the edge of the drape. Other times you end up patching three or four spots before it finally seals.
Wound vacs take practice. The more you do, the better you’ll get. Even experienced wound care nurses occasionally have to peel back the drape and start over.
FREQUENTLY ASKED QUESTIONS ABOUT Wound Vacs
A: Prevena™ is usually placed over a closed surgical incision and often remains in place until the surgeon removes it. Traditional NPWT is used for open wounds and usually requires dressing changes every 48–72 hours.
A: The most common reason is an air leak. Check for loose edges, wrinkles in the drape, moisture, tubing connections, or holes in the seal. Sometimes even a tiny wrinkle can trigger the alarm.
A: The periwound is the healthy skin surrounding the wound. Protecting it helps prevent skin breakdown, irritation, and maceration while creating a better seal for the wound vac dressing.