👤 By the CinnaRN Clinical Content Team🕐 Updated 2026-08-23🏷️ Safety & Infection Control🔖 Free to read, print, and share
Also known as: SSI · wound infection · infected incision · surgical wound infection
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Use this quick-reference guide to spot, treat, and prevent Surgical Site Infection on the NCLEX. Keep it handy during review and on exam day!
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📒 The 1-minute cheat sheet
🩺 Signs
Redness, warmth, purulent drainage
Fever > 38°C, ↑WBC
Usually 3–7 days post-op
🎓 Prevent
Hand hygiene = top measure
Sterile dressing, aseptic technique
Pre-op abx within 1h incision
✅ Do
Culture before starting antibiotics
Control glucose < 180 mg/dL
🚩 Report
Spreading redness, foul drainage
📚 Surgical Site Infection — full study notes
The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.
A surgical site infection is an infection at or near a surgical incision occurring within 30 days of surgery (or up to 90 days with an implant). It causes pain, delayed healing, prolonged hospitalization, and sepsis risk. Common organisms include Staphylococcus aureus (including MRSA). Prevention centers on sterile technique, timely prophylactic antibiotics, glucose control, normothermia, and proper wound care.
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Key points
Understand these first
Local signs include increasing incisional pain, redness, warmth, swelling, purulent drainage, and wound edge separation.
Systemic signs include fever (often appearing after the first 48-72 postoperative hours), chills, and rising WBC count.
Major risk factors include diabetes/hyperglycemia, obesity, smoking, immunosuppression, poor nutrition, and prolonged surgery.
Prophylactic antibiotics are most effective when given within 60 minutes before incision and stopped within 24 hours.
Hyperglycemia, hypothermia, and inadequate tissue oxygenation all impair healing and raise infection risk.
Hand hygiene and sterile technique during dressing changes are the most important prevention measures.
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Nursing priorities
What to do, in order
Perform hand hygiene and use strict sterile technique for all dressing changes and wound care.
Assess the incision each shift for redness, warmth, swelling, drainage, odor, and approximation, and monitor temperature and WBC.
Maintain tight glucose control, adequate nutrition (protein, vitamin C, zinc), hydration, and normothermia to support healing.
Administer prophylactic and treatment antibiotics on time; obtain wound cultures before starting antibiotics when infection is suspected.
Educate the patient on incision care and hand hygiene, and ensure proper drain management to prevent fluid collection.
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Red flags — report now
Escalate immediately
Spreading redness, purulent or foul drainage, fever, and increasing pain indicate infection; report and obtain a culture.
Wound dehiscence (separation) or evisceration (organs protruding) is a surgical emergency; cover with sterile saline-moistened gauze and keep the patient supine with knees bent while notifying the surgeon.
High fever, hypotension, tachycardia, and confusion suggest progression to sepsis; escalate immediately.
Never apply a soiled or non-sterile dressing or break sterile technique during wound care.
Eat a protein- and vitamin-C-rich diet, stop smoking, and keep blood sugar controlled to promote healing.
❓ Surgical Site Infection: NCLEX FAQs
What are the priority nursing interventions for Surgical Site Infection?
Perform hand hygiene and use strict sterile technique for all dressing changes and wound care. Assess the incision each shift for redness, warmth, swelling, drainage, odor, and approximation, and monitor temperature and WBC. Maintain tight glucose control, adequate nutrition (protein, vitamin C, zinc), hydration, and normothermia to support healing. Administer prophylactic and treatment antibiotics on time; obtain wound cultures before starting antibiotics when infection is suspected.
What are the warning signs of Surgical Site Infection a nurse must report?
Spreading redness, purulent or foul drainage, fever, and increasing pain indicate infection; report and obtain a culture. Wound dehiscence (separation) or evisceration (organs protruding) is a surgical emergency; cover with sterile saline-moistened gauze and keep the patient supine with knees bent while notifying the surgeon. High fever, hypotension, tachycardia, and confusion suggest progression to sepsis; escalate immediately. Never apply a soiled or non-sterile dressing or break sterile technique during wound care.
What do I need to know about Surgical Site Infection for the NCLEX?
Local signs include increasing incisional pain, redness, warmth, swelling, purulent drainage, and wound edge separation. Systemic signs include fever (often appearing after the first 48-72 postoperative hours), chills, and rising WBC count. Major risk factors include diabetes/hyperglycemia, obesity, smoking, immunosuppression, poor nutrition, and prolonged surgery. Prophylactic antibiotics are most effective when given within 60 minutes before incision and stopped within 24 hours.
What patient teaching is important for Surgical Site Infection?
Wash hands before and after touching the incision and keep the wound clean and dry as instructed. Report increasing redness, swelling, warmth, drainage, foul odor, fever, or increased pain. Eat a protein- and vitamin-C-rich diet, stop smoking, and keep blood sugar controlled to promote healing.
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Quick Tip
Local signs include increasing incisional pain, redness, warmth, swelling, purulent drainage, and wound edge separation.