文献精选

Surface Inactivation of a SARS‑CoV‑2 Surrogate with Hypochlorous Acid is Impacted by Surface Type, Contact Time, Inoculum Matrix, and Concentration

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

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

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

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。

Effect of Stabilized Hypochlorous Acid on Re-epithelialization and Bacterial Bioburden in Acute Wounds: A Randomized Controlled Trial in Healthy Volunteers

Ewa A. BURIAN¹, Lubna SABAH¹, Klaus KIRKETERP-MØLLER¹, Glenn GUNDERSEN² and Magnus S. ÅGREN^1,3,4

¹Department of Dermatology and Copenhagen Wound Healing Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark,
²SoftOx Solutions AS, Oslo, Norway, ³Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, and ⁴Department of Clinical
Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

第7页共495页

K2 Content

A global view of pediatric urology 2026-09-08 00:00

Catherine R. deVries *

Summary

Over the course of approximately 60 years, the field of pediatric urology has evolved as a convergence of pediatric surgery, urology, and plastic surgery to address congenital anomalies of the urinary tract and genitalia in children. Guide-lines for training and certification are narrowing in high-income countries (HICs) at the same time as the fertility rate is declining and the prevalence of complex genitourinary (GU) conditions is decreasing. In low-and middle-income countries (LMICs), health systems for large populations are currently in a state of stress. Here we briefly review the history of pediatric urology as a surgical subspecialty, identify unmet needs especially in LMICs and place the field in the context of a global surgical ecosystem.

Methods

The English language literature on workforce trends in pediatric urology, pediatric surgery and urology was reviewed as well as development of the emerging field of global surgery. Global surgery looks at the social, economic and political context of health systems as well as unmet clinical need. World trends in fertility rates were reviewed to identify regions of workforce surplus and gaps, supply chain needs, infrastructure and systems strengths and weaknesses.

Results

The proliferation of training programs in pediatric surgery and specialties in high-income countries (HICs) coupled with declining birth rates has led to a saturation of specialists and declining surgical case load. In LMICs, while the birth rate has also been declining, surgical specialization has not progressed. In the lowest income countries, especially in sub-Saharan Africa, training in pediatric surgical specialties and urology is rare. The broad workforce that supports surgical care, such as anesthesia, intensivist pediatrics, radiology, laboratory, and nursing face similar challenges. Supply chains for specialized pediatric urological surgery are weak.

Conclusion

There is an evolving maldistribution of pediatric surgical and pediatric urological workforce globally, with too few practitioners in LMICs and too many in HICs. The high cost of specialized equipment limits access to quality care, and the supply chain for consumables and medication is patchy. In LIC’s, basic community-based infrastructure for health including reliable electricity is lacking. Recent experience with Covid and environmental disasters has highlighted that even in HICs surgical resilience can be challenged. This is an opportunity to consider the state of children’s urological care globally and to build resilience by identifying and addressing strengths and gaps.
Effects of hypochlorous acid mouthwash on salivary bacteria including Staphylococcus aureus in patients with periodontal disease: a randomized controlled trial 2026-09-07 00:00

Ying‑Chu Lin¹ , Cheng‑Feng Tsai^1,2* and Hsiao‑Ling Huang^3*

Abstract

Background The effects of a low concentration of hypochlorous acid (HOCl) mouthwash on salivary bacteria remained unclear. We aimed to evaluate the antibacterial effects of 100 ppm HOCl mouthwash on salivary bacteria, including Staphylococcus aureus (S. aureus), in patients with periodontal disease (PD).

Methods Patients with PD were randomized into mouthwash-only (MW, n=26) and mouthwash with periodon‑tal flosser (MWPF, n=27) groups. Patients without PD were selected for the control group (n=30). S. aureus culture and saliva samples (before and after the intervention) were collected for bacterial DNA extraction. A real-time poly‑ merase chain reaction assay and serial dilutions of S. aureus culture and saliva samples were used to measure the salivary bacteria total count (SBTC) and confirm the antibacterial effects of the mouthwash using S. aureus.

Results No significant difference in demographic data was observed among the three groups. Before the intervention, the baseline SBTC of the MW and MWPF groups was significantly higher than that of the control group. After the mouthwash rinses, the SBTC data significantly changed in the MW and MWPF groups only (by 62.4% and 77.4%, respectively). After the base-2 log-transformation of the SBTC data, a similar trend was observed. Linear regression revealed that baseline SBTC and the MWPF intervention significantly affected SBTC reduction percentage by volume. After incubation with 10% (v/v) of mouthwash, the survival rates of 106 and 107 colony-forming units/mL of S. aureus were 0.51%±0.06% and 1.42%±0.37%, respectively.

Conclusions These study results indicated that 100 ppm HOCl mouthwash treatment could effectively reduce SBTC in patients with PD and the abundance of S. aureus. It provides that the HOCl mouthwash can be an option for individuals to help control SBTC, especially in patients with PD.

Trial registration The study protocol was approved by the Institutional Review Board of Kaohsiung Medical University Hospital (KMUHIRB-F(I)-20200042) on 20/03/2020 and retrospectively registered at ClinicalTrial.gov (NCT05372835) on 13/05/2022.

Keywords Antibacterial ability, Total bacterial count, Hypochlorous acid, Mouthwash, Intervention, Bacterial growth estimation
次氯酸消毒剂在骨科术后切口愈合中的应用：一项实效性随机对照试验 2026-09-05 00:00

张燕１，朱迪１，孙磊１，王任贤２

（１．徐州仁慈医院感染管理科，江苏徐州２４１００４；２．台湾防疫学会，台湾台中４０４４７）

［摘要］目的探讨次氯酸应用于外科术后切口愈合及减少术后切口感染的临床效果。方法纳入某三级甲等医院足踝外科住院患者，按手术时序进行分组：第一阶段（２０２４年１０月１６日—１２月１６日）为对照组，采用４５００～５５００ｍｇ／Ｌ碘伏消毒术后切口；第二阶段（２０２４年１２月１７日—２０２５年２月１７日）为试验组，采用（１１０±１６．５）ｍｇ／Ｌ次氯酸消毒术后切口。术后第１、３、５、７、１０、１４天进行切口消毒、指标评价并记录。主要结局指标为手术部位感染，次要指标包括术后４８ｈ红肿、过敏及疼痛程度评分。结果对照组感染发病率为０．９６％，术后４８ｈ红肿发生率为１６．９９％，疼痛评分（１．４１±０．４９）分；试验组未发生感染，术后４８ｈ红肿发生率为９．５８％，疼痛评分为（１．３６±０．４８）分。两组感染发病率及疼痛评分差异均无统计学意义（均犘＞０．０５），红肿发生率差异具有统计学意义（犘＝０．００６）。按切口类型进行分层分析显示，开放性外伤亚组中，对照组感染发病率为３．１９％，红肿发生率为２９．７９％，疼痛评分为（１．６２±０．４９）分；试验组术后４８ｈ红肿发生率为８．１４％，疼痛评分为（１．４１±０．４９）分，两组感染发病率差异无统计学意义（犘＞０．０５），红肿发生率（犘＜０．００１）及疼痛程度评分（犘＝０．００５）差异均有统计学意义。闭合性外伤亚组中，各结局指标组间比较差异均无统计学意义（均犘＞０．０５）。结论次氯酸溶液在闭合性外伤术后切口应用的效果与碘伏相当；在开放性外伤术后应用中，其控制术后红肿发生及疼痛的效果优于碘伏。

［关键词］次氯酸；碘伏；骨科；切口愈合；实效性随机对照试验

［中图分类号］Ｒ１８１．３＋２Ｒ１８７＋．１

Custom Mod Mega1

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

文献精选

Surface Inactivation of a SARS‑CoV‑2 Surrogate with Hypochlorous Acid is Impacted by Surface Type, Contact Time, Inoculum Matrix, and Concentration

Correlation and Agreement Between Transcutaneous Oxygen Pressure and Toe Pressure in Patients with Diabetic Foot Ulcers

Status Report on Topical Hypochlorous Acid: Clinical Relevance of Specific Formulations, Potential Modes of Action, and Study Outcomes

Effect of Stabilized Hypochlorous Acid on Re-epithelialization and Bacterial Bioburden in Acute Wounds: A Randomized Controlled Trial in Healthy Volunteers

学术会议

伤口世界提示

Custom Mod Mega1

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

文献精选

Surface Inactivation of a SARS‑CoV‑2 Surrogate with Hypochlorous Acid is Impacted by Surface Type, Contact Time, Inoculum Matrix, and Concentration

Correlation and Agreement Between Transcutaneous Oxygen Pressure and Toe Pressure in Patients with Diabetic Foot Ulcers

Status Report on Topical Hypochlorous Acid: Clinical Relevance of Specific Formulations, Potential Modes of Action, and Study Outcomes

Effect of Stabilized Hypochlorous Acid on Re-epithelialization and Bacterial Bioburden in Acute Wounds: A Randomized Controlled Trial in Healthy Volunteers

消息订阅

学术会议

伤口世界提示