Application of Novosorb biodegradable temporising matrix in wounds of different aetiologies: a case series.

DECLARATION OF INTEREST: The authors have no conflicts of interest to declare.

Effect of Pseudomonas colonisation on lower limb venous ulcer healing: a systematic review.

OBJECTIVE: Pseudomonas aeruginosa is a Gram-negative bacillus that commonly colonises lower limb venous ulcers. Its effects on venous ulcer healing are widely debated. It produces exotoxins and elastase, as well as forming biofilms in hard-to-heal wounds. It is postulated that these virulence factors lead to slower healing times in patients with lower limb venous ulcers colonised with Pseudomonas. This review aimed to summarise the available evidence pertaining to this topic. METHOD: A systematic review was performed in August 2019, where the Pubmed, Cochrane and Embase databases were searched for relevant literature according to PRISMA guidelines. Retrospective and prospective studies examining the effect of Pseudomonas colonisation on any measure of ulcer healing were included. RESULTS: Some 282 articles were screened, of which seven studies including 491 patients were ultimately included for analysis. Of these, no study demonstrated a significant association between Pseudomonas colonisation and delayed healing of venous ulcers. In five of the seven studies, the effect of Pseudomonas aeruginosa on initial ulcer size at presentation was recorded. CONCLUSION: All the studies demonstrated an association between ulcer size and the presence of Pseudomonas aeruginosa. While Pseudomonas aeruginosa may colonise larger ulcers or those with a worse prognosis, no evidence was found to support the hypothesis that this colonisation had a negative impact on lower limb venous ulcer healing.

Randomised controlled trial comparing European standard class 1 to class 2 compression stockings for ulcer recurrence and patient compliance.

The aim of this study was to determine the rate of venous ulcer recurrence and the level of compliance in patients wearing European class 1 or class 2 compression stockings. A total of 100 patients with healed venous leg ulcers were recruited, and were randomised to either class 1 (n = 50) or class 2 (n = 50) compression stockings. Follow-up was at 1 week, 3, 6, 9 and 12 months to monitor ulcer recurrence and compliance. Patients had a duplex scan to identify the source of venous incompetence. The rate of ulcer recurrence after 12 months was 16·1%, and the difference in recurrence rate between classes was not statistically significant (P = 0·287) although greater numbers in class 1 developed a recurrence. Participants (88·9%) were compliant; non-compliant patients were at a significantly greater risk of recurrence (P≤ 0·0001). Thirteen patients had both superficial and deep incompetence; those randomised to class 1 stockings (n = 4) developed ulcer recurrence. Patients with a history of multiple episodes of ulceration were more likely to develop a recurrence (P = 0·001). The lowest venous ulcer recurrence rates were seen in patients who were compliant with hosiery regardless of the compression level. Patients with both superficial and deep incompetence had a lower rate of recurrence with class 2 compression.

Necrotising fasciitis in the COVID-19 era: A consequence of caution - A case series.

Necrotising fasciitis (NF) is a severe soft tissue infection that is associated with a high risk of morbidity and mortality. During the coronavirus disease 19 (COVID-19) pandemic, the population has been actively discouraged from presenting to emergency medical services unless absolutely necessary. While this was an important step in allowing for preservation of limited resources in a time of crisis, it may have resulted in immeasurable 'secondary victims' of the pandemic as patients with time-critical conditions delay hospital presentation. In this case series, we describe three patients that noted symptoms of soft tissue infection, but delayed seeking healthcare advice due to concerns regarding COVID-19 exposure. All three progressed to NF, requiring highly morbid wide surgical debridement and prolonged hospital admission, with a high risk of potential mortality. The findings of this series demonstrate the importance of consistently delivering appropriate and timely healthcare interventions to patients with non-COVID-19-related conditions. While efforts must be made to ensure preservation of valuable healthcare resources in a global pandemic, patients must also be empowered to seek timely care for non-COVID-19-related conditions even in this time of crisis.