Post surgical wound examinations and findings
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CDC surgical site infection signs symptoms wound assessment postoperative
Post-surgical wound examination
Perform hand hygiene, explain the examination, provide privacy, and use aseptic non-touch technique where appropriate. Inspect the wound before removing any dressing, then assess and document:
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General condition
- Temperature, pulse, blood pressure, pain score.
- Systemic symptoms: fever, chills, malaise, nausea, confusion.
- Review the postoperative day, procedure, comorbidities such as diabetes, immunosuppression, smoking, and anticoagulant use.
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Dressing and drainage
- Dressing intact, clean, dry, or saturated.
- Amount, color, consistency, odor, and timing of drainage.
- Check drains: output volume, color, patency, insertion-site leakage, and surrounding skin.
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Wound appearance
- Location, length, type of closure, and whether edges are well approximated.
- Surrounding skin: redness, warmth, swelling, bruising, induration, blistering, maceration, or necrosis.
- Wound bed if open: granulation tissue, slough, eschar, exposed sutures/fascia, depth, undermining, or tunneling.
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Palpation
- Tenderness, local heat, fluctuance suggesting a collection/abscess, induration, crepitus, and hematoma.
- Do not probe a fresh surgical wound unless specifically indicated and within local protocol.
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Function and deeper complications
- Pain out of proportion to the expected postoperative course.
- Reduced function of the operated area.
- Look for signs of deep or organ-space infection, which can occur despite a relatively normal-looking incision.
Expected or normal findings
| Finding | Typical interpretation |
|---|---|
| Wound edges closed and aligned | Normal healing |
| Mild localized tenderness | Common early after surgery, improving over time |
| Mild swelling or bruising | Often expected, depending on procedure |
| Small amount of serosanguinous drainage initially | May be normal in the first postoperative period |
| Dry dressing or progressively reduced drainage | Favors uncomplicated healing |
| Pink-red, moist granulation tissue in an open healing wound | Healthy healing tissue |
| Mild itching as healing progresses | Common, if no spreading rash or wound change |
Abnormal findings and likely significance
| Finding | Possible concern |
|---|---|
| Increasing pain, tenderness, redness, warmth, or swelling | Surgical site infection (SSI), cellulitis, inflammation |
| Purulent, cloudy, green, or foul-smelling drainage | Infection |
| Increasing serous drainage or a bulge under the wound | Seroma or wound disruption |
| Tense swelling, bruising, firmness, or bloody drainage | Hematoma |
| Redness spreading beyond the wound margins, lymphangitic streaking | Spreading cellulitis |
| Wound edges separating | Dehiscence |
| Visible fat, muscle, fascia, or abdominal contents | Major dehiscence/evisceration: emergency |
| Fluctuance | Possible abscess or fluid collection |
| Black/gray tissue, blistering, crepitus, dusky skin, or severe pain out of proportion | Possible necrotizing soft-tissue infection: emergency |
| Fever, tachycardia, hypotension, confusion, rigors | Systemic infection or sepsis |
| Persistent drainage or delayed healing | Infection, foreign body, poor perfusion, diabetes, malnutrition, or other healing impairment |
Classical wound-infection findings include pain, erythema, malodorous drainage, swelling, fluctuation, and impaired function. Suppurative infections commonly become apparent about 7 to 10 days postoperatively, though severe infections may present earlier.
- Mulholland and Greenfield's Surgery: Scientific Principles and Practice, “Wound Evaluation”
- Bailey and Love's Short Practice of Surgery, “Postoperative wound infections”
The CDC SSI guidance advises contacting the surgical team promptly for redness or pain at the site, drainage, or fever.
Documentation example
POD 3. Midline abdominal incision 10 cm, staples intact, edges well approximated. Dressing dry with scant serosanguinous staining. Mild peri-incisional bruising; no spreading erythema, warmth, induration, fluctuance, or purulent drainage. Tenderness mild and appropriate for postoperative day. Drain patent, 40 mL serosanguinous output over 8 hours. Temperature 37.1°C. Patient reports pain 3/10, controlled with prescribed analgesia.
Urgent escalation
Seek immediate surgical review for wound separation, visible internal tissue or organs, uncontrolled bleeding, pus with fever, rapidly expanding redness, severe worsening pain, crepitus, skin discoloration, or signs of sepsis. Recent surveillance literature supports structured postoperative monitoring, including after discharge, but it does not replace clinical assessment when concerning symptoms develop (PMID: 37593933).
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