In short. Who to contact, what to describe, what to stop doing, and why pressing on the area is the wrong instinct when a swelling is tense.
Key points
- A photograph taken in good light, with something in the frame for scale and the time recorded, is more useful than a description and it costs a few seconds.
- Where you have marked the edge of the swelling on the skin, photograph that too.
- If the collection is later evacuated, the photograph is also part of the record of what the area looked like before and after.
When a swelling looks like a collection, the first hours are worth planning for and most of the useful actions are about not doing the wrong thing. This page is deliberately short.
Call, and describe four things
Where the swelling is and when you noticed it. Whether it is larger than it was an hour ago. Whether it feels firm or tense. And whether the skin over it has changed colour, become shiny, blistered or cold. Those four answers determine how quickly the person receiving the call escalates it, and all four can be given without any equipment.
Take a photograph before you call
A photograph taken in good light, with something in the frame for scale and the time recorded, is more useful than a description and it costs a few seconds. Where you have marked the edge of the swelling on the skin, photograph that too. If the collection is later evacuated, the photograph is also part of the record of what the area looked like before and after.
Leave the area alone
Do not press on the swelling, do not apply heat or ice, and do not remove the dressing to look underneath. Pressing can increase the bleeding and it changes what the clinician feels when you are examined. Heat increases bleeding, and cold obscures the colour of the skin over the swelling, which is one of the findings that decides what happens next. The dressing is part of how the wound is being managed, and unwrapping it at home removes that management without replacing it.
Do not wait for a callback
A routine enquiry may not be answered for hours, and a collection under tension does not wait. If you cannot reach the team promptly, call the hospital main line. If the swelling is tense and growing, if the pain is worsening, or if the skin over it has changed, go to the nearest emergency department rather than waiting for a reply. Where the swelling is soft and not growing, a call to the team and a review appointment is the appropriate response.
Things not to do while you wait
- Do not press on the area or apply heat or ice to it.
- Do not take a medication that affects clotting, or a new painkiller to get through the wait.
- Do not wait for a call back when the swelling is tense, growing, or the skin over it has changed.
A call that turns out to be unnecessary costs a conversation, and a swelling that was soft and not growing is a good outcome. A delay where the skin over a collection was already changing cannot be recovered. The correct instinct is to describe the four findings and to let the answer follow from them.
Frequently asked questions
Should I press on the swelling to stop it?
No. Pressing does not stop a collection, it can increase the bleeding, and it also changes what the clinician feels when you are examined. Note what it feels like, mark the edge, and leave it alone. Firm pressure is a technique for a fresh external bleed, not for a collection under the skin after an operation.
Should I take painkillers?
Take nothing that affects clotting, and do not take a new medication in order to manage the symptom while you wait. Ordinary pain relief that you were already prescribed is not a problem, but whoever assesses you needs to know what you have taken, so keep the list with you and say what it is.
What if the swelling is not growing?
A soft swelling that is not growing and is not tense is the finding that is assessed at a review rather than urgently. Mark the edge, note the time, take a photograph, and raise it with your team rather than attending an emergency department. The distinction is tension and growth, not the presence of a swelling.
Risks & Limitations
- A hematoma is blood collecting where it should not. The findings that matter are tension, growth over hours and a change in the skin over the swelling, not the size of the bruise.
- Blood removed early leaves little trace. Blood left under pressure can compromise the skin over it and can organise into a firm mass that changes the contour permanently.
- A collection is more likely after a rise in blood pressure, after straining or lifting too early, and in a patient who takes medication that affects clotting.
- A wound that has been reopened for evacuation goes through a second period of healing, and the scar can settle less well than it would have done.
- A collection can recur after it has been drained, which is why the provoking factors are reviewed and the restrictions on lifting are part of the treatment.
- No assessment predicts a collection exactly, which is why the warning findings are taught to every patient rather than only to those at higher risk.
When to Seek Care
- A swelling that is tense, tight and larger on one side, growing over hours &mdash — seek emergency care now.
- Pain that is getting worse instead of settling, with a hard swelling &mdash — seek emergency care now.
- Skin over the swelling turning dusky, shiny, blistered or cold &mdash — seek emergency care now.
- Fresh blood leaking steadily through a wound that was dry — contact the team the same day.
- Bruising that keeps spreading well beyond the operated area, or a wound that is coming apart.
- Fever, spreading warmth or discharge around the wound, or feeling generally very unwell.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) - patient safety guidance on post-operative bleeding and collections
- National Institute for Health and Care Excellence (NICE, UK) - guidance on surgical site care and on the management of post-operative complications
- Cochrane Library - systematic reviews on drains and on wound management after surgery
- British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS) - patient information on recovery after surgery
- Chinese Medical Association Plastic Surgery Branch - clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.