Silver Nitrate 0.5% Solution

How it works

Silver ions exert broad antibacterial activity by binding microbial proteins and nucleic acids and disrupting bacterial cell function, limiting wound colonisation at the surface.

Prescribing in practice

• Prolonged or extensive use can cause electrolyte disturbance, particularly hyponatraemia, through leaching across the wound, so monitor electrolytes during burns soaks.
• It stains skin, dressings and surfaces black and the concentrated cautery form is caustic, so protect surrounding healthy tissue.
• Use dilute solution for antimicrobial burns care per local protocols and current prescribing references, distinguishing it clearly from cautery sticks.

Monitoring

Monitor serum electrolytes and wound status during prolonged silver nitrate dressing use, especially over large burn areas.

Counselling the patient

• Explain that the solution helps keep the burn wound clean but will stain the skin and dressings dark.
• Advise the team to monitor blood tests for salt levels during extended use.
• Report any new confusion, weakness or wound deterioration.

Evidence & guidelines

Dilute silver nitrate is a long-standing topical burns antimicrobial; its risk of electrolyte disturbance with extensive use is well described in burns care references.