What is the recommended technique for cleansing a wound, including irrigation, antiseptic use, and dressing?

Wound Cleansing: Recommended Technique

Use running tap water or sterile saline for wound irrigation—avoid povidone-iodine and other antiseptics for routine wound cleansing, as they provide no additional benefit and may cause harm. 1, 2

Irrigation Technique

Mechanical irrigation with adequate pressure is essential to physically remove bacterial contamination and debris from the wound surface. 1, 2

• Irrigate with running tap water or sterile saline until all visible debris and foreign material is completely removed from the wound 1, 2
• Apply sufficient irrigation pressure (approximately 13 psi) to effectively dislodge bacteria and contaminants—simple rinsing without pressure is inadequate 2, 3
• Avoid excessive pressure that could drive bacteria deeper into tissue or strip protective cells; irrigation should clear debris without causing tissue trauma 2, 3

Why Tap Water is Acceptable

Multiple studies demonstrate that infection rates are equivalent whether wounds are irrigated with tap water, boiled water, distilled water, or sterile saline 1, 2. Tap water is cost-effective, readily available, and clinically appropriate for most wound cleansing scenarios 1.

Antiseptic Use: Evidence Against Povidone-Iodine

Do not use povidone-iodine or other antiseptic solutions for routine wound irrigation. 1, 2

• Studies show no additional benefit of povidone-iodine over simple irrigation with water or saline in preventing infection 1, 2
• Povidone-iodine can cause serious systemic complications including renal failure, electrolyte disturbances, thyroid dysfunction, altered mental status, and seizures—particularly with continuous irrigation or absorption from large wound surfaces 2
• Avoid continuous mediastinal irrigation with povidone-iodine in deep sternal wounds due to high risk of systemic toxicity 2

Limited Exceptions for Antiseptic Use

Povidone-iodine may have a role in specific surgical contexts only: 2

• Low-quality evidence suggests irrigation of clean surgical incisions with aqueous povidone-iodine before closure may reduce infection (odds ratio 0.31) 2
• Vaginal cleansing before cesarean delivery 2
• Nasal antisepsis in preoperative protocols 2

These exceptions do not apply to routine traumatic wound care.

Dressing Selection After Cleansing

Cover clean wounds with an occlusive dressing to promote optimal healing. 1, 2, 4

• Use occlusive dressings such as film, petrolatum-impregnated gauze, hydrogel, or cellulose/collagen dressings—these achieve superior healing compared to dry dressings 1, 4
• Do not use antibiotic or antibacterial dressings on clean wounds, as they do not improve healing or reduce infection rates 1, 4
• Select dressings based on exudate control, comfort, and cost rather than antimicrobial properties 5
• If the wound is bleeding, oozing, or the patient is diaphoretic, use gauze dressing instead of transparent semi-permeable dressing 6

Debridement Considerations

Remove slough, necrotic tissue, and surrounding callus with sharp debridement when present, taking contraindications such as severe ischemia or pain into account. 5

• Sharp debridement is preferred over other methods (autolytic, enzymatic, or larval therapy) as it is least expensive and universally available 5
• Urgent surgical debridement in an operating theater is mandatory for gas-forming infection, abscess, or necrotizing fasciitis 1
• For bite wounds, cleanse with sterile normal saline and remove superficial debris cautiously—avoid aggressive deep debridement that enlarges the wound 7

High-Risk Wounds Requiring Special Management

Certain wounds require immediate medical evaluation and systemic antibiotics rather than simple cleansing: 1, 7, 2, 4

• Human or animal bite wounds contaminated with saliva—these have high infection risk and require early systemic antibiotics 1, 7
• Hand wounds from bites—these are particularly serious due to risk of septic arthritis, osteomyelitis, and tendonitis 7
• Wounds with signs of infection (redness, swelling, foul-smelling drainage, increased pain, fever)—remove dressing, inspect wound, and obtain medical care 1, 4

Bite Wound Protocol

For bite wounds specifically: 7

• Cleanse with sterile normal saline (not iodine or antibiotic solutions) 7
• Remove superficial debris cautiously 7
• Do not close infected wounds—allow healing by secondary intention 7, 4
• Facial wounds may be closed primarily by a plastic surgeon after meticulous irrigation and prophylactic antibiotics 7
• Ensure tetanus prophylaxis is current 7
• Consider rabies prophylaxis for feral/wild animal bites 7

Common Pitfalls to Avoid

• Do not substitute antiseptics for mechanical irrigation—physical removal of debris is essential and cannot be replaced by chemical agents 2
• Do not use antiseptics as sole therapy for wounds requiring systemic antibiotics 2
• Do not close infected wounds primarily—they must heal by secondary intention 7, 4
• Do not pack simple cutaneous abscesses (<5 cm) after incision and drainage—this increases pain without benefit 4
• Do not apply organic solvents (acetone, ether) to skin before catheter insertion or during wound care 6

Monitoring and Follow-Up

• Inspect wounds within 24 hours after initial treatment, either by phone or office visit 7
• Watch for infection signs: redness, swelling, foul drainage, increased pain, or fever 1, 4
• If infection develops despite appropriate care, consider hospitalization 7
• For diabetic foot ulcers, clean daily with water or saline and perform regular debridement in addition to dressing changes 4