糖尿病足合并真菌感染的系统性病例分析OA

Diabetic foot fungal infections are induced by impaired skin barrier and microcirculation disorders,and their role in disability has been long overlooked.This study systematically analyzed 36 confirmed cases,utilizing a multidimensional visualization model to dissect the correlation between etiology and prognosis.The pathogenic fungal spectrum involved Candida,Aspergillus,Fusarium,species of Mucorales,Trichosporon,Madurella,Rhodotorula,etc.Clustering and principal component analysis identified two phenotypic clusters:the"highly invasive-vascular disruption type"composed of Fusarium and Mucorales was significantly positively correlated with high Wagner grades and amputation;the"biofilm-chronic colonization type"dominated by Candida was prone to form drug-resistant biofilms leading to delayed wound healing.The risk quantification model indicated that Wagner grades≥3 were the primary independent risk factor,with a significant threshold effect.The results of principal component analysis showed that special drug-resistant Candida might shift towards the high-risk group,suggesting that the virulence of drug-resistant pathogens might have a significant impact on prognosis.This study proposes a standardized diagnostic and treatment process,emphasizing"culture-pathology-molecular"multimodal diagnosis,and recommends early initiation of broad-spectrum potent antifungal treatment combined with thorough debridement for patients with grades≥3 or high-risk fungal species,aiming to reduce the risk of amputation and improve patient prognosis through early intervention.