张艳

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04 9月 2019

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Author : 伤口世界

专业特长:擅长各种肿瘤及外周血管疾病的介入治疗，在华南地区率先开展外周动脉疾病腔内治疗，包括主髂动脉闭塞腔内治疗、髂股胭动脉及膝下球囊血管成形术、动脉斑块旋切术、血管腔内流变除栓术、双向:会师等技术完成各类复杂病变的诊治。

学术任职:中华医学会广东省医学会影像分会委员、中国医师协会介入医师分会常务委员、中国医师协会腔内血管学专业委员会青年委员、广东省健康管理学会血管病学专业委员会常委、广东省抗癌协会肿瘤影像与介入诊治专业委员会委员、广东省医疗行业协会伤口管理分会常委

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Surface Inactivation of a SARS‑CoV‑2 Surrogate with Hypochlorous Acid is Impacted by Surface Type, Contact Time, Inoculum Matrix, and Concentration 2026-08-10 00:00

Allyson N. Hamilton¹ · Sahaana Chandran¹ · Christopher A. Baker^1,2 · Kristen E. Gibson¹

Received: 2 December 2022 / Accepted: 13 January 2023 / Published online: 21 January 2023

© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023

Abstract

Indirect contact with contaminated surfaces is a potential transmission route for COVID-19. Therefore, it is necessary to investigate convenient and inexpensive surface sanitization methods, such as HOCl, against severe acute respiratory syn-drome coronavirus 2 (SARS-CoV-2). The SARS-CoV-2 surrogate, Phi6 (~7 log PFU/mL), was prepared in artificial saliva and tripartite matrices, spot inoculated on coupons of either stainless steel or vinyl, and allowed to dry. The coupons were sprayed with either 500 ppm or 1000 ppm HOCl, and remained on the surface for 0 s (control), 5 s, 30 s, or 60 s. Samples were enumerated via the double agar overlay assay. Statistical analysis was completed in R using a generalized linear model with Quasipoisson error approximations. Time, concentration, surface type, and inoculum matrix were all significant contributors to log reduction at P=0.05. Significant three-way interactions were observed for 1000 ppm, vinyl, and 60 s (P=0.03) and 1000 ppm, tripartite, and 60 s (P=0.0121). A significant two-way interaction between vinyl and 60 s was also observed (P=0.0168). Overall, increased HOCl concentration and exposure time led to increased Phi6 reduction. Notably, the highest estimated mean log reduction was 3.31 (95% CI 3.14, 3.49) for stainless steel at 60 s and 1000 ppm HOCl in artificial saliva, indicating that this method of sanitization may not adequately reduce enveloped viruses to below infective thresholds.

Keywords Fomite · Phi6 · Hypochlorous acid · Vinyl · Stainless steel
Correlation and Agreement Between Transcutaneous Oxygen Pressure and Toe Pressure in Patients with Diabetic Foot Ulcers 2026-08-08 00:00

Kyu-Il Lee¹ , Yu-Kyeong Yun² , Seung-Kyu Han^2,3 , Kyung-Chul Moon^2,3 , Sik Namgoong^2,3 ,

Seong-Ho Jeong³ , Eun-Sang Dhong³

¹Department of Plastic Surgery, Taean Public Health Office, Taean, Korea

²Diabetic Wound Center and Department of Plastic Surgery, Korea University Guro Hospital, Seoul, Korea

³Department of Plastic Surgery, Korea University College of Medicine, Seoul, Korea

Abstract

Background: Adequate tissue oxygenation is a key determinant of diabetic foot ulcer (DFU) outcomes. Though transcutaneous oxygen pressure (TcPO₂) is the gold standard for evaluating tissue oxygenation, its limited availability restricts routine clinical use. Consequently, toe pressure is frequently utilized as a practical surrogate; however, the direct correlation between these two modalities has yet to be rigorously investigated. This study aimed to assess the correlation and agreement between TcPO₂and toe pressure in patients with DFUs.

Methods: A retrospective review was conducted on 837 DFU patients who received simultaneous TcPO²and toe pressure assessments.

The correlation between the two tests was analyzed using the Pearson correlation coefficient, and agreement was evaluated using Bland– Altman analysis. To aid interpretation, a scatterplot and Bland–Altman plot were generated.

Results: TcPO₂and toe pressure demonstrated a strong correlation (R=0.66; 95% confidence interval, 0.62 to 0.70; P<0.001). Bland–

Altman analysis showed a mean bias of 26.9 mmHg (standard deviation of differences, 28.8 mmHg; 95% limits of agreement, −28.9 to 82.6 mmHg) between toe pressure and TcPO₂, reflecting limited agreement and increased variability at higher perfusion levels.

Conclusion: TcPO₂and toe pressure are strongly correlated. However, they are not interchangeable, particularly in DFU patients with high tissue perfusion.

Keywords: Diabetic foot; Foot ulcer; Ischemia; Microcirculation
Status Report on Topical Hypochlorous Acid: Clinical Relevance of Specific Formulations, Potential Modes of Action, and Study Outcomes 2026-08-07 00:00

本文转载于J Clin Aesthet Dermatol. 2018;11(11):36–39，不代表本网站赞同其观点和对其真实性负责，我们只作于阅读分享，非商业用途，如若侵权，请告知删除。

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主任医师、教授、博导，南方医科大学第三附属医院（广东省骨科医院）院长

张艳

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主任医师、教授、博导，南方医科大学第三附属医院（广东省骨科医院）院长

张艳

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