Recovery after surgery: what helps, what to watch for, and where HBOT fits

Recovery after surgery is mostly made of ordinary things done consistently: moving, eating, resting, looking after the wound and noticing early when something is wrong. This guide covers that practical side first, using NHS sources, then explains where hyperbaric oxygen therapy is used after operations and where the evidence runs out.

Your surgical team's instructions always come first. Recovery after a hip replacement is different from recovery after bowel surgery or a skin graft, and the discharge letter for your operation outranks any general guide, including this one.

What helps recovery after surgery?

Many NHS hospitals use an enhanced recovery approach for major operations, including some breast, bowel, gynaecological, urological and joint replacement surgery. It rests on a simple finding: the earlier a person gets out of bed and starts walking, eating and drinking after an operation, the shorter their recovery time will be.

The NHS highlights a few things you can influence before and after the operation:

• Eat well. Your body needs energy for repair.
• Stay active. Being physically active before your operation will help you recover quicker, and getting moving afterwards shortens recovery.
• Stop or cut down smoking and alcohol. Doing so helps speed up recovery and reduces the risk of complications.
• Use the rehabilitation offered. Services such as physiotherapy are part of recovering well, not an extra.
• Plan for going home. Depending on the operation, you may be able to go home sooner than expected, so arrange help in advance.

If pain or sickness is stopping you getting up, eating or sleeping, tell the ward or your surgical team. Those are the building blocks of recovery, so they are worth solving rather than enduring.

How do you look after a surgical wound at home?

Follow the instructions on your discharge letter, because wound care varies by operation. General advice from Cambridge University Hospitals includes:

• You are normally advised to wait 48 hours before showering or washing your hair, although this depends on the operation and some wounds take longer.
• Showering is preferable to bathing.
• Do not put soap, shower gel, body lotion or talcum powder directly onto the healing wound, and pat it dry gently with a clean towel.

Some redness and swelling after surgery is expected. The skill is telling normal healing from the start of a problem, which the next section covers.

Skin grafts need their own plan. A split skin graft is a very thin shaving of your own skin, taken from a donor site and placed over a wound to help it heal. According to University Hospitals Sussex, a graft needs a healthy wound bed to grow into because it has no blood supply of its own. As new blood vessels grow and support it, it begins to stick down and heal. The plastic surgery team usually checks at 5 to 7 days whether the graft has taken, and daily activities should be increased gradually over two to three weeks. At the donor site, South Tees Hospitals notes, the wound heals like a graze over two to three weeks.

What are the warning signs after surgery?

Learn these before you leave hospital, and keep your ward or surgical team's number somewhere easy to find.

Wound infection. According to the Royal Orthopaedic Hospital, a surgical wound infection can develop any time from 2 to 3 days after surgery until the wound has healed, usually 2 to 3 weeks after the operation, and occasionally several months later. Signs include:

• the skin around the wound becoming red or sore in a way that does not seem like normal healing, or feeling hot and swollen
• increasing pain or hardness around the wound, or the wound gaping
• green or yellow discharge (pus)
• feeling generally unwell or feverish, or having a temperature

Contact the team on your discharge letter or your GP if you notice these. For urgent advice that is not an emergency, call 111.

Blood clots. The NHS says a deep vein thrombosis (DVT) is more likely if you are having, or have had, surgery, or are staying in or have recently left hospital, especially if you cannot move around much. A clot can happen weeks after surgery, which is why some people continue preventive treatment after discharge.

• Symptoms include throbbing pain and swelling in one leg, usually in the calf or thigh, and red, blue or darkened skin around the painful area.
• Ask for an urgent GP appointment or contact 111 if you think you have a DVT.
• Call 999 or go to A&E if you have DVT symptoms and feel short of breath or have chest pain, because a clot may have travelled to the lungs. Do not drive yourself.

Where is hyperbaric oxygen used after surgery?

Hyperbaric oxygen therapy (HBOT) means breathing concentrated oxygen inside a pressurised chamber. What HBOT is explains the physiology. After surgery, its established role is narrow and specialist.

Compromised grafts and flaps. The Undersea and Hyperbaric Medical Society lists compromised grafts and flaps among its recognised indications, and its wording is careful. HBOT is "neither necessary nor recommended" for normal, uncompromised grafts or flaps. It is considered when tissue is compromised, for example by previous radiotherapy or poor blood flow, and selecting the right patients is described as crucial.

A 2017 review in Advances in Wound Care, written by plastic surgeons, proposes giving HBOT for compromised grafts and flaps at 2.0 to 2.5 ATA for 90 to 120 minutes, based on UHMS recommendations. It reports benefit in animal studies and supportive clinical findings, but the clinical evidence is largely case reports and case series. The authors call for multicentre, randomised prospective studies.

Acute surgical and traumatic wounds. A 2013 Cochrane review found four randomised trials with 229 participants, and the results were split:

• 48 people with burns having split skin grafts: more complete graft survival with HBOT.
• 36 people with crush injuries: more wounds healed with HBOT than with sham treatment, in a trial using 2.5 ATA.
• 10 people having free flap surgery: no significant difference in graft survival.
• 135 people having flap grafting: no significant difference compared with dexamethasone or heparin.

All four trials were at unclear or high risk of bias, and the reviewers concluded there is a lack of high quality evidence on HBOT for wound healing.

Wounds that will not heal. A surgical wound that stays open for months becomes a different clinical question. Our non-healing wounds page explains why blood supply, infection and pressure need assessing before anyone considers hyperbaric oxygen.

Does HBOT help routine recovery after surgery?

For an uncomplicated operation that is healing as expected, the evidence above does not show that adding HBOT speeds recovery. UHMS does not recommend it for uncompromised grafts or flaps, and the Cochrane review of acute surgical and traumatic wounds found no high quality evidence of benefit.

Our chamber runs at 1.5 ATA, lower than the hospital protocols described for compromised grafts and flaps, so we do not present that research as a promise about recovery here. Our session guide includes a general interval for people recovering from surgery once they are medically cleared. That is scheduling guidance, not evidence that sessions improve healing.

Can you have HBOT after surgery?

Only with clearance from your surgical team. Before booking:

• Ask your surgeon first. They know the operation, the wound and any complications, and whether pressure exposure is appropriate at this stage.
• Check the pressure-sensitive areas. Some lung conditions and recent chest procedures need individual review before pressure exposure, and a current infection, congestion or difficulty clearing your ears can make a session unsuitable that day. Our guide to who HBOT is not for covers this in more detail.
• List every medicine and treatment on the medical declaration rather than trying to judge the interaction yourself.
• Hair transplant patients have their own page on HBOT and hair transplant recovery.

No referral needed. Medical consultation included. If your history or declaration raises a question, the clinic will clarify it before any session goes ahead.