Patient Education for Wound Infection and Wound Culture with Antibiotic Use Post-Surgery
Understanding Your Wound Care After Surgery
The most important treatment for a wound infection is opening and draining the wound—antibiotics alone are not enough and will only be added if you have significant signs of infection. 1, 2
What to Watch For: Signs That Need Immediate Attention
You need to contact your surgeon immediately if you develop any of these warning signs 1, 2:
- Temperature above 101.3°F (38.5°C) 1
- Heart rate faster than 110 beats per minute 1
- Redness spreading more than 2 inches (5 cm) beyond your wound edges 1
- Shivering, muscle aches, or feeling generally unwell 1
- Pus or foul-smelling drainage from your wound 1
- Increasing pain, swelling, or warmth around the incision 2
If Your Wound Becomes Infected
Your surgeon will need to remove some or all of your stitches and open the wound to let it drain—this is the primary treatment, not antibiotics. 1, 2 The wound will then heal from the inside out with regular dressing changes. 2
When Antibiotics Are Prescribed
Antibiotics will only be given if you have the warning signs listed above. 1, 2 Here's what you need to know:
- Duration: Most wound infections require only 5-7 days of antibiotics after the wound is properly drained 2
- Do not stop early: Complete the full course even if you feel better, as stopping early can lead to the infection coming back 3
- Timing matters: Take your antibiotics at the scheduled times to maintain proper levels in your body 2
Why a Wound Culture May Be Taken
Your doctor may collect a sample of fluid or tissue from your wound to send to the laboratory. 2 This helps:
- Identify the specific bacteria causing your infection 2
- Determine which antibiotics will work best against those bacteria 2
- Adjust your treatment if the initial antibiotics aren't working 2
The culture results typically take 2-3 days, so your doctor may start you on antibiotics before getting results and adjust them later if needed. 2
Daily Wound Care at Home
Keep your wound clean and watch it daily for any changes. 4 Follow these steps:
- Wash your hands thoroughly before and after touching your wound area 1
- Change dressings as instructed by your surgeon, typically 1-2 times daily 2
- Keep the area dry between dressing changes unless instructed otherwise 2
- Do not apply creams, ointments, or home remedies unless specifically told to do so 2
- Report any changes in drainage color, amount, or smell 2
What NOT to Do
These common mistakes can worsen your infection 2, 3:
- Don't ignore early warning signs—infections caught early are easier to treat 1
- Don't expect antibiotics to work without proper wound drainage—the wound must be opened if infected 1, 2
- Don't stop antibiotics early even if you feel better 3
- Don't get your wound wet in baths, pools, or hot tubs until cleared by your surgeon 2
- Don't remove or manipulate your dressings except during scheduled changes 2
Factors That Increase Your Risk
Be especially vigilant if you have 4, 5:
- Diabetes—check your blood sugars regularly and keep them controlled 4, 6
- Weakened immune system from medications or medical conditions 4
- Obesity 4
- Smoking—consider quitting or reducing 6
- Poor nutrition—eat adequate protein and calories for healing 3
When to Return for Follow-Up
Schedule and attend all follow-up appointments even if your wound looks fine. 3 Your surgeon needs to:
- Assess healing progress 3
- Detect early problems before they become serious 3
- Decide when to stop antibiotics if prescribed 2
- Clear you to resume normal activities 3
Special Situations
If you had surgery on your intestines, genital area, or near the rectum, your infection risk is higher because these areas have more bacteria. 1, 4 Your antibiotics will need to cover a broader range of germs, and you may need closer monitoring. 1
If you develop fever above 100.4°F (38°C), blood cultures may be drawn and antibiotics started immediately, especially if you appear ill. 1
Questions to Ask Your Surgeon
Before leaving the hospital or surgery center, make sure you understand 2:
- How often should I change my dressing?
- What should normal healing look like?
- When should I call with concerns versus going to the emergency room?
- When can I shower or bathe?
- What activities should I avoid and for how long?
- When is my follow-up appointment?