What should you use when silver wound dressings are not working in chronic or hard-to-heal wounds?
Chronic wounds that do not respond to standard care — including antimicrobial silver dressings — are a common challenge in UK tissue viability and wound care practice.
Clinicians often ask:
- What should I use when silver dressings are not working?
- Why are some wounds not responding to silver?
- What are the next steps for stalled or hard-to-heal wounds?
This article explores clinical evidence and escalation options when wounds fail to progress despite silver-based antimicrobial treatment.
1. When is a wound considered to be failing silver treatment?
In clinical practice, a wound may be considered non-responsive when:
- there is no measurable reduction in wound size after 2–6 weeks
- exudate levels remain unchanged or increase
- persistent inflammation or slough is present
- suspected biofilm remains despite treatment
- healing plateaus despite appropriate wound care
At this stage, the wound is typically classified as stalled or hard-to-heal.
2. Why do some wounds not respond to silver dressings?
Silver dressings are primarily designed for short-term antimicrobial control.
However, in chronic wounds, response may be limited due to:
- persistent biofilm formation
- ongoing inflammatory signalling
- impaired tissue repair mechanisms
- repeated microbial re-colonisation
- underlying vascular or metabolic disease (e.g. VLU, DFU)
There is also increasing evidence that silver may impede certain wound healing processes in chronic wounds, particularly when wounds become stalled or fail to progress as expected.
As a result, antimicrobial control alone may not be sufficient to restart healing.
3. What does clinical evidence show when silver dressings fail?
Copper dressing intervention in silver-refractory wounds (Gorel et al., 2023)
A prospective single-arm study evaluated 15 patients with 17 wounds that had previously responded poorly to silver dressings.
Key findings:
- Mean area reduction in 25 days:
- Silver phase: 37.02% ± 25.11%
- Copper phase: 87.35% ± 22.4%
- Copper achieved approximately 2.4× greater reduction in wound size
- Faster healing rate compared with silver treatment phase
- Significant improvement in wound progression after switching to copper dressings
Clinical interpretation:
Wounds that had plateaued on silver dressings showed significantly improved healing trajectories following introduction of copper-based dressings.
Chronic hard-to-heal wounds (Dhoonmoon, 2025)
In a case series of four patients with chronic wounds (6–9 months duration):
- Minimal improvement during 6–9 weeks of silver-based treatment
- After switching to copper dressings:
- >50% wound volume reduction within 7 days
- Complete wound closure within 4 weeks
- Pain scores reduced from 4.75 to 0.25
- Mean treatment cost reduced by 86% (£2,606 → £365)
Clinical interpretation:
Copper dressings were associated with rapid improvement in wounds unresponsive to silver-based antimicrobial therapy.
Venous leg ulcer evidence (Karpeniuk et al., 2025)
In chronic venous leg ulcers resistant to standard care (including compression, NPWT, and antimicrobial dressings such as silver):
- 80% wound closure within 9.6 weeks
- Improved granulation and epithelialisation
- Rapid improvement in wound bed quality
- Consistent outcomes across multiple wound care settings
Clinical interpretation:
Copper dressings demonstrated effectiveness in stalled VLUs previously treated with silver-based dressings.
4. What are the clinical options when silver dressings fail?
When a wound is not responding to silver dressings, clinicians typically consider:
1. Reassessment of wound aetiology
- vascular status (especially VLUs)
- infection or biofilm burden
- pressure, trauma, or mechanical factors
- systemic comorbidities (diabetes, vascular disease)
2. Escalation of wound care strategy
- change in dressing modality
- reassessment of antimicrobial approach
- consideration of bioactive wound environment support
3. Alternative antimicrobial + reparative approaches
Clinical evidence suggests copper-based dressings may be considered in:
- stalled chronic wounds
- silver-refractory wounds
- venous leg ulcers
- diabetic foot ulcers
- complex post-surgical wounds
5. Clinical takeaway for UK wound care teams
- Silver dressings are effective for short-term antimicrobial control
- Some chronic wounds become non-responsive despite appropriate silver use
- Clinical evidence demonstrates improved outcomes after switching to copper dressings in refractory wounds
- Escalation decisions should be based on wound response over time and clinical judgement
Clinical summary
If a wound is not progressing:
- reassess wound cause and contributing factors
- evaluate for biofilm and chronic inflammation
- review antimicrobial strategy
- consider escalation options where appropriate
References
Gorel O. et al. (2023). Enhanced healing of wounds that responded poorly to silver dressing by copper wound dressings: Prospective single-arm treatment study. Health Science Reports, 14;7(1):e1816.
Dhoonmoon L. (2025). Healing hard-to-heal wounds and improving quality of life. Journal of Clinical Nursing, 39(5), 28–33.
Karpeniuk S. et al. (2025). Effective Management of Venous Leg Ulcers by Copper Dressings. International Journal of Clinical Case Reports and Reviews, 31(1).