Using 2% PVPI topical solution for serial intravitreous injections and ocular surface findings: a case control study.

BACKGROUND: The use of povidone-iodine for ocular surface asepsis is widespread for intravitreal injections. They became frequent procedures, leading to serial exposure of patients' eyes to iodinated solutions. In this study, we investigate the changes in the ocular surface in patients submitted to repeated use of povidine for intravitreal injection of anti-VEGF asepsis, analyzing Ocular Surface Disease Index, non-invasive break up time, blinking quality, lipid layer, meniscus height and osmolarity. METHODS: This case-control study included 34 individuals (68 eyes), 14 males, 20 females aged 48 to 94. Inclusion criteria were individuals who received application of 2% povidone-iodine eyedrops for intravitreal injections treatment with the non-treated contralateral eye used as control. Ocular surface examinations were performed at a single occasion. A pre-intravitreal injection asepsis protocol with povidone-iodine was applied. All statistical analysis was performed using the STATA® 18.0 Software and a p-value = 0.05 was considered as the statistical significance value in all tests. RESULTS: The median number of IVIs in treated eyes was 12 (range 6-20). The results in treated eyes compared with untreated eyes were respectively : median OSDI 16 (IQR 6-39) and 12.5 (IQR 8-39) (p = 0.380); mean NIBUT 10.30 (SD ± 2.62) and 10.78 (SD ± 2.92) ( s, p = 0.476); median blinking quality 100 (IQR 100) and 100 (IQR 100 ) (%, p = 0.188); median lipid layer 87 (IQR 77-90) and 86 (IQR 74-100) (nm, p = 0.451); median meniscus height 0.22 (IQR 0.19-0,31) and 0.24 (IQR 0.20-0.27) (mm, p = 0.862), median Meibomian gland atrophy 33 (IQR 24-45) and 31.5 (IQR 25-39) (%, p = 0.524); and mean osmolarity 306.6 (SD ± 21.13) and 313.8 (SD ± 29) (mOsm, p = 0.297). There was no statistically significant relationship between the repetitive use of 2% iodinated solution and signs or symptoms compatible with dry eye syndrome in this group of patients. CONCLUSIONS: The findings suggest that 2% povidone iodine is a safe and efficacious agent for ocular surface antisepsis during intravitreal injections, not leading to substantial ocular surface modifications. This conclusion supports the continued use of povidone iodine in routine ophthalmic procedures without increased risk of inducing dry eye syndrome.

In situ and in vitro evaluation of two antiseptics for blood bank based on chlorhexidine gluconate/isopropyl alcohol and povidone-iodine.

BACKGROUND: Poor disinfection is the main cause of blood contamination, so its elimination is key to limiting the entry of bacteria into the collection system. With the advancement of antiseptic technology, antiseptics with sterile, disposable applicators are now available. AIM: To evaluate in situ two antiseptics (with and without applicators) for blood banks and to demonstrate in vitro antiseptic activity on bacterial biofilms of importance in transfusion medicine. METHODS: Antiseptic A (2% sterile solution of chlorhexidine gluconate/70% isopropyl alcohol provided with applicator) and bulk antiseptic B (10% povidone-iodine) were evaluated. The deferred blood donor arms were subjected to disinfection with antiseptics A and B and the contralateral arms were cultured to determine the baseline bacterial load (control). Antiseptic activity was assessed by ANOVA and logaritmic reduction values (LRV) and percentage reduction values (PRV) were calculated. Finally, the in vitro activity of antiseptic A was analyzed by confocal laser scanning microscopy (CLSM) on biofilm models. RESULTS: Prior to disinfection tests, commensal and clinically important bacteria were identified; antiseptic A showed post-disinfection bacterial growth rates of zero compared to controls (p < 0.0001). The frequency of bacterial growth with antiseptic B was 74%. A significant difference was identified between both antiseptics, where antiseptic A showed higher activity (p < 0.5468). LRV and PRV were 0.6-2.5/100% and 0.3-1.7/66.7-99.7% for antiseptics A and B, respectively. Through CLSM, disinfectant A (without applicator) showed lower in vitro antiseptic activity on the tested biofilms at the exposure times recommended by the manufacturer. CONCLUSIONS: Sterile solution of chlorhexidine gluconate/isopropyl alcohol with applicator showed advantages disinfection in deferred blood donors over povidone-iodine.

Chondrotoxic effects of tranexamic acid and povidone-iodine on the articular cartilage of rabbits.

PURPOSE: To evaluate the chondrotoxic effects of intra-articular use of TXA 20 mg/kg and/or 0.35% PVPI on knee joint cartilage in an experimental model of rabbits. METHODS: Forty-four male New Zealand adult rabbits were randomly assigned to four groups (control, tranexamic acid (TXA), povidone-iodine (PVPI), and PVPI + TXA). The knee joint cartilage was accessed through an arthrotomy and exposed to physiological saline SF 0.9% (control group), TXA, PVPI, and PVPI followed by TXA. Sixty days after surgical procedure, the animals were sacrificed and osteochondral specimens of the distal femur were obtained. Histological sections of cartilage from this area were stained with hematoxylin/eosin and toluidine blue. The following cartilage parameters were evaluated by the Mankin histological/histochemical grading system: structure, cellularity, glycosaminoglycan content in the extracellular matrix, and integrity of the tidemark. RESULTS: The isolated use of PVPI causes statistically significant changes in cartilage cellularity (p-value = 0.005) and decrease glycosaminoglycan content (p = 0.001), whereas the isolated use of TXA decreased significantly the glycosaminoglycan content (p = 0.031). The sequential use of PVPI + TXA causes more pronounced alterations in the structure (p = 0.039) and cellularity (p = 0.002) and decreased content of glycosaminoglycans (p < 0.001) all with statistical significance. CONCLUSION: Data suggest that intra-articular use of tranexamic acid 20 mg/kg and intraoperative lavage with 0.35% povidone-iodine solution for three min are toxic to the articular cartilage of the knee in an experimental in vivo study in rabbits.

Revisión sistemática con metaanálisis. Iodo povidona / Systematic Review with Meta-Analysis. Povidone Iodine

Introducción: La descontaminación preoperatoria de la piel es parte de la práctica quirúrgica estándar. La infección del sitio quirúrgico implica un gasto adicional a los sistemas de salud y un incremento en la morbilidad y mortalidad de los pacientes sometidos a cirugía. El iodo povidona es un desinfectante muy utilizado para eliminar la carga bacteriana cutánea. Objetivo: Constatar si el iodo povidona es mejor que otros desinfectantes cutáneos en la reducción de las infecciones del sitio quirúrgico. Métodos: Se realizó una búsqueda en Google Académico, PubMed y Embase utilizando los términos Mesh; iodo povidona, infección del sitio quirúrgico, cirugía, antisépticos locales, unidos por el operador booleano AND y los filtros Adultos, desde 2015, y ensayos clínicos controlados. Se aplicó la escala de Jadad para riesgo de sesgos y el Consort 2010 y la lista de chequeo PRISMA para determinar la calidad del estudio. El riesgo relativo fue la medida de efecto para un IC95 y un error de 0,05. Se incluyeron 8 ensayos clínicos controlados, n= 4800 casos, con la distribución de eventos en los grupos experimental 140/2402 y control 141/2398, para una diferencia no significativa p=0,444. La heterogeneidad fue I2=62,57 por ciento. Conclusiones: No existieron diferencias entre el iodo povidona y el resto de los desinfectantes para disminuir el porcentaje de infecciones del sitio quirúrgico en este estudio(AU)

Introduction: Preoperative skin decontamination is part of standard surgical practice. Surgical site infection implies an additional cost to health systems and an increase in morbidity and mortality of patients undergoing surgery. Povidone iodine is a widely used disinfectant to eliminate the bacterial load on the skin. Objective: To verify if povidone iodine is better than other skin disinfectants in reducing surgical site infections. Methods: A search of articles and controlled clinical trials published since 2015 was carried out in Google Scholar, PubMed and Embase and using terms of the Mesh such as povidone iodine, surgical site infection, surgery, local antiseptics, joined by the Boolean operator AND in addition to Adult filters. The Jadad scale for risk of bias and Consort 2010 and PRISMA checklist were applied to determine the quality of the study. Relative risk was the measure of effect for CI95 and an error of 0.05. Eight controlled clinical trials were included, n= 4800 cases, with the distribution of events in the experimental groups 140/2402 and control 141/2398, for a non-significant difference p=0.444. Heterogeneity was I2=62.57 percent. Conclusions: There were no differences between povidone iodine and the rest of the disinfectants to reduce the percentage of surgical site infections in this study(AU)

Assessment of Bacterial Nanocellulose Loaded with Acetylsalicylic Acid or Povidone-Iodine as Bioactive Dressings for Skin and Soft Tissue Infections.

Bacterial nanocellulose (BNC) is a novel nanomaterial known for its large surface area, biocompatibility, and non-toxicity. BNC contributes to regenerative processes in the skin but lacks antimicrobial and anti-inflammatory properties. Herein, the development of bioactive wound dressings by loading antibacterial povidone-iodine (PVI) or anti-inflammatory acetylsalicylic acid (ASA) into bacterial cellulose is presented. BNC is produced using Hestrin-Schramm culture media and loaded via immersion in PVI and ASA. Through scanning electron microscopy, BNC reveals open porosity where the bioactive compounds are loaded; the mechanical tests show that the dressing prevents mechanical wear. The loading kinetic and release assays (using the Franz cell method) under simulated fluids present a maximum loading of 589.36 mg PVI/g BNC and 38.61 mg ASA/g BNC, and both systems present a slow release profile at 24 h. Through histology, the complete diffusion of the bioactive compounds is observed across the layers of porcine skin. Finally, in the antimicrobial experiment, BNC/PVI produced an inhibition halo for Gram-positive and Gram-negative bacteria, confirming the antibacterial activity. Meanwhile, the protein denaturation test shows effective anti-inflammatory activity in BNC/ASA dressings. Accordingly, BNC is a suitable platform for the development of bioactive wound dressings, particularly those with antibacterial and anti-inflammatory properties.

Comparing surgeons' skin tolerance and acceptability to alcohol-based surgical hand preparation vs traditional surgical scrub: A matched quasi-experimental study.

BACKGROUND: We aimed to compare the tolerance and acceptability of alcohol-based surgical hand preparation versus handscrubbing with antimicrobial soap and water by surgeons. METHODS: Matched quasi-experimental trial in an academic quaternary care hospital in Ribeirão Preto, Brazil, from April 1 to October, 31, 2017. Participants were cardiac and orthopedics surgeons from the study facility. In the first study phase, they performed handscrubbing with either 2% chlorhexidine (CHG) or 10% iodopovidone (PVP-I) and, in the second phase, they performed handrubbing with alcohol-based handrub (ABHR). Surgeons' skin tolerance and acceptability were evaluated using WHO-validated tools. Data were analyzed using the MacNemar's test within STATA. RESULTS: A total of 33 surgeons participated to the "per protocol" population; the majority were male (94%); mean age of 35 years (SD, 8.5). On product tolerance, there was a minimal variation in redness, scaliness, fissures, and visual evaluation of the skin when handrubbing with ABHR was compared to handscrubbing with either PVP-I or CHX. Regarding acceptability, participants rated better handrubbing with ABHR than handscrubbing with PVP-I when assessing product smell (66.6% vs 0%, p=0.002), color (73.3% vs 0%, p=0.001), product texture (60% vs 0%, p=0.004), skin dryness (60% vs 0%, p=0.004), ease of application (66.6% vs 0%, p=0.002) and overall satisfaction (66.6% vs 6.7% p=0.011). Participants rated similarly handrubbing with ABHR and handscrubbing with CHX, except for product texture, where handrubbing rated better (71,4% vs. 0%, p=0.002). Handrubbing with ABHR was preferred by 73.3%. CONCLUSION: Although handrubbing and handscrubbing were equally well tolerated by surgeons, alcohol-based surgical hand preparation fell into the personal preference for most of them. TRIAL REGISTRATION: Brazilian Clinical Trials Registry (ReBEC), RBR-8ym9yj.

Povidona Yodada como Antiséptico Oral en la Reducción de la Carga Viral del SARS-CoV-2: revisión de la Literatura / Povidone Iodine as an Oral Antiseptic in the Reduction of SARS-CoV-2 Viral Load: literature Review

Se ha sugerido que el uso de antisépticos orales podría reducir la carga viral del virus SARS-CoV-2 en los pacientes durante la atención dental, pero sin evidencia que avale su efectividad. Dada la vulnerabilidad del virus a la oxidac ión, se ha recomendado el uso de colutorios que contengan agentes oxidantes como la povidona yodada. El objetivo de la presente revisión fue determinar la efectividad del uso de povidona yodada como antiséptico oral en la disminución de la carga viral del virus SARS-CoV-2. Se realizó una búsqueda bibliográfica en PubMed, Biblioteca Virtual en Salud, SciELO, Web of Science y EBSCO host. Se incluyeron estudios clínicos en pacientes con COVID-19 y estudios in vitro con cepas del virus que utilizaran colutorios de povidona yodada como forma de intervención, publicados entre enero del 2019 y enero del 2021. La selección de los artículos se realizó en dos etapas por dos autores de manera independiente. Luego de eliminar los artículos duplicados, se mantuvieron 53 referencias. Finalmente se incluyeron 2 estudios in vivo y 5 estudios in vitro para la revisión cualitativa. En los estudios in vitro, todas las concentraciones de povidona yodada evidenciaron una actividad virucida eficaz en los distintos tiempos de exposición, donde la mínima concentración efectiva correspondió a 0,5 % en 15 segundos. Los estudios in vivo presentaron resultados positivos hacia el uso de povidona yodada, pero con tamaños muestrales pequeños y una gran heterogeneidad en su metodología. En conclusión el uso profiláctico de povidona yodada como colutorio contra el virus SARS-CoV-2 es respaldado por los trabajos in vitro, con tiempos de aplicación fácilmente realizables en la atención dental, pero se requiere de un mayor número de ensayos controlados aleatorizados para comprobar su efectividad en la práctica clínica.

It has been suggested that the use of oral antiseptics could reduce the viral load of SARS-CoV-2 virus in patients during dental care, but without evidence to support its effectiveness. The objective of this study was to determine the effectiveness of povidone iodine mouthwash in reducing the viral load of SARS-CoV-2 virus. A literature search was conducted in PubMed, Biblioteca Virtual enSalud, SciELO, Web of Science and EBSCOhost. Clinical studies in patients with COVID-19 or in vitro studies with SARS-CoV-2 strains that used povidone-iodine mouthwash as a form of intervention, published between January 2019 and January 2021, were included. The selection of articles was carried out in two phases by two authors independently. After removing duplicate articles, 53 references were kept. Finally, 2 in vivo studies and 5 in vitro studies were included for the qualitative review. In the in vitro studies, all concentrations of povidone iodine showed effective virucidal activity at the different exposure times, where the minimum effective concentration corresponded to 0.5 % in 15 seconds. In vivo studies showed positive results towards the use of povidone iodine, but with small sample sizes and great heterogeneity in their methodology. The prophylactic use of povidone iodine mouthwash against the SARS-CoV- 2 virus is supported by in vitro studies, with application times easily achievable in dental care, but a large number of randomized controlled trials are required to verify its effectiveness in clinical practice.

Relación del uso de colutorios bucales con la disminución de la carga viral del SARS-CoV-2 en la práctica odontológica: tema de revision / Relationship of the use of mouthwashes with the decrease in the viral load of SARS-CoV-2 in dental practice: review topic

Resumen Actualmente, el odontólogo es uno de los profesionales de la salud con mayor riesgo de contagio de la COVID-19 debido a su contacto directo con la cavidad bucal. La alta exposición a los aerosoles, generados por los instrumentos rotatorios, en pacientes con la COVID-19, eleva el contacto con la carga viral del SARS-CoV-2 en los procedimientos de rutina. Se ha descrito que los colutorios bucales, previos a la atención odontológica, podrían ser soluciones efectivas para la reducción del contagio pese a su poca evidencia clínica. Los colutorios con cloruro de cetilpiridinio (CPC), peróxido de hidrógeno (H2O2), povidona yodada (PVP-I) y gluconato de clorhexidina (CHX) muestran un gran potencial para reducir la carga viral del SARS- CoV-2 en los aerosoles generados a partir de la saliva durante la consulta odontológica. Por lo expuesto, el presente artículo tuvo por objetivo hacer una revisión de la información científica actual sobre la relación del uso de los colutorios bucales con la disminución de la carga viral del SARS-CoV-2.

Abstract It is currently known that the dentist is one of the health professionals with the highest risk of contagion of COVID-19 due to its direct contact with the oral cavity. High exposure to aerosols generated by rotating instruments in COVID-19 patients increases contact with the SARS-CoV-2 viral load in routine procedures. It has been described that mouthwashes prior to dental care could be effective solutions to reduce contagion despite their little clinical evidence. Mouthwashes with cetylpyridinium chloride (CPC), hydrogen peroxide (H2O2), povidone-iodine (PVP-I) and chlorhexidine gluconate (CHX) show great potential to reduce the viralload of SARS-CoV-2 in the aerosols generated from saliva during the dental visit. Therefore, the objective of this article was to review the current scientific information on the relationship of the use of mouthwashes with the decrease in the viral load of SARS-CoV-2.

Povidone-Iodine Solution: A Potential Antiseptic to Minimize the Risk of COVID-19? A Narrative Review.

OBJECTIVES: Patients are mask-free during dental attention. In addition, dentists and dental staff after working for hours need to hydrate or eat. Removing the mask makes them vulnerable to the risk of contamination. For those cases, a prophylactic decontamination protocol could be useful as an adjunct to the most recommended biosecurity protocols. This article aims to provide a comprehensive review of the published evidence about the use of povidone-iodine (PVP-I) against SARS-CoV-2 and to propose a prophylactic protocol for dental attention using PVP-I during the COVID-19 pandemic. MATERIALS AND METHODS: An electronic search in Medline via PubMed, Scopus, Cochrane Library and Scielo databases was performed up to July 24, 2020, to identify relevant literature focusing on Povidone Iodine, SARS-CoV-2, COVID-19, SARS-COV, MERS, antiviral mouthwashes, and oral cavity. RESULTS: Clinical studies on the virucidal effectiveness of PVP-I against SARS-CoV-2 have not yet been reported. We identify a recent in vitro study showing PVP-I effectiveness at 0.5, 1, and 1.5% within 15s of contact. Moreover, another in vitro study has shown ≥99.99% virucidal activity as 1% mouthwash and 0.45% throat spray. The only study in SARS-CoV-2 confirmed patients reported a significant 3h drop in viral load after rinsing with 15 mL of 1% PVP-I for 1min. CONCLUSIONS: Although no clinical trials have reported the efficacy of PVP-I on SARS-CoV-2, recent studies in patients with positive PCR to SARS-CoV-2 found a significant 3-h drop in viral load. We believe that an oral prophylactic protocol with PVP-I for dental healthcare workers and patients as an adjunct to the current biosecurity protocol could minimize the transmission risk during COVID-19 pandemic.

Effects of topical azithromycin, moxifloxacin, and povidone iodine on conjunctival bacterial flora in patients undergoing intravitreal injection / Os efeitos da azitromicina tópica, moxifloxacina e iodopovidona na flora bacteriana conjuntival em injeções intravítreas

ABSTRACT Purpose: To compare effects of 5% topical povidone iodine with prophylactic topical azithromycin and moxifloxacin on bacterial flora in patients undergoing intravitreal injection. Methods: A total of 132 patients were randomly assigned to receive treatment with azithromycin or moxifloxacin, or no treatment (control group). In total, 528 specimens were obtained at the time of admission, 4 days before intravitreal injection, 4 days after intravitreal injection, and 8 days after intravitreal injection. Samples were immediately sent to the microbiology laboratory for incubation. Results: The microorganism observed most frequently was coagulasenegative Staphylococcus (23.8%). When the results of samples obtained on Day 4 before injection were assessed, growth of coagulase-negative Staphylococcus was significantly lower in the moxifloxacin group, compared with controls (p=0.049). Acinetobacter baumannii continued to grow after administration of azithromycin (p=0.033). When the results of four days after intravitreal injection were evaluated, growth of coagulase-ne gative Staphylococcus was higher in controls, compared with patients who received azithromycin or moxifloxacin (p=0.004). Eradication rate was significantly higher in the moxifloxacin group than in the control group (p=0.001). Samples obtained on Day 8 after intravitreal injection showed similar levels of bacterial growth in all groups (p=0.217). Conclusion: Moxifloxacin was more effective than 5% povidone iodine in controlling the growth of conjunctival bacterial flora. Use of moxifloxacin in combination with 5% povidone iodine resulted in a synergistic effect.

RESUMO Objetivo: Comparar os efeitos de iodopovidona tópico a 5% com azitromicina e moxifloxacina profiláticas sobre a flora bacteriana em pacientes submetidos à injeção intravítrea. Métodos: Um total de 132 pacientes foram aleatoriamente designados para receber tratamento com azitromicina ou moxifloxacina ou nenhum tratamento (grupo controle). No total, 528 amostras foram obtidas no momento na admissão, 4 dias antes da injeção intravítrea, 4 dias após a injeção intravítrea e 8 dias após a injeção intravítrea. As amostras foram imediatamente enviadas para o laboratório de microbiologia para incubação. Resultados: O microorganismo mais frequentemente observado foi o Staphylococcus coagulase-negativo (23,8%). Quando os resultados das amostras obtidas no dia 4 antes da injeção foram avaliados, o crescimento do Staphylococcus coagulase-negativo foi significativamente menor no grupo mo xifloxacina, em comparação com os controles (p=0,049). Acinetobacter baumannii continuou a crescer após a administração de azitromicina (p=0,033). Quando os resultados de 4 dias após a injeção intravítrea foram avaliados, o crescimento do Staphylococcus coagulase-negativo foi maior no controle, em comparação com pacientes que receberam azitromicina ou moxifloxacina (p=0,004). A taxa de erradicação também foi significativamente maior no grupo moxifloxacina do que no grupo controle (p=0,001). As amostras obtidas no dia 8 após injeção intravítrea mostraram níveis semelhantes de crescimento bacteriano em todos os grupos (p=0,217). Conclusão: A moxifloxacina foi mais eficaz do que 5% de iodopovidona no controle do crescimento da flora bacteriana conjuntival. O uso de moxifloxacina em combinação com 5% de iodopovidona resultou em um efeito sinérgico.

Limpeza periuretral na realização do cateterismo urinário de demora: ensaio clínico randomizado / Periurethral cleansing in indwelling urinary catheterization: randomized controlled trial

O cateterismo urinário de demora é um procedimento amplamente utilizado em pacientes internados e está relacionado com altas taxas de bacteriúria assintomática e infecção do trato urinário. Para evitar essas doenças, a limpeza da região periuretral antes da inserção do cateter é uma importante conduta, com fins de reduzir a entrada de microrganismos dessa região através da uretra. Guias de prática clínica recomendam que o cateterismo urinário de demora deva ser realizado com técnica asséptica, porém não há consenso sobre qual solução é mais eficaz para sua realização, com vistas à redução das infecções do trato urinário e da bacteriúria assintomática. O objetivo é de avaliar o efeito da limpeza periuretral nas incidências de bacteriúria assintomática e de infecção do trato urinário com o uso de três soluções (água, sabão e gluconato de clorexidina aquosa 2%; gluconato de clorexidina degermante 2%, água bi-destilada e gluconato de clorexidina aquosa 2%; e povidona-iodo 10% degermante, água bi-destilda e povidona-iodo aquoso 1%) em pacientes adultos internados em hospital terciário submetidos ao cateterismo urinário de demora. Trata-se de uma pesquisa realizada em duas etapas: revisão sistemática da literatura e ensaio clínico randomizado sem mascaramento do pesquisador. Foi realizado em um hospital de grande porte de Belo Horizonte ­ Minas Gerais. A população foi constituída por pacientes internados e que foram elegíveis para serem submetidos ao cateterismo urinário de demora. A amostra foi de 28 pacientes, sendo alocados aleatoriamente nos grupos: sabão (n=11) e grupo antisséptico (n=17). Uroculturas foram coletadas no momento da inserção e 24h após. A incidência global de bacteriúria assintomática foi de 7,14%, no grupo sabão foi de 9,1% e no grupo antissépticos foi de 5,9%. Não houve nenhum caso de infecção do trato urinário. A regressão logística mostrou que não há diferenças estatisticamente significativas nas incidências de bacteriúria assintomática quando realizada a limpeza com sabão ou antisséptico (clorexidina ou povidona-iodo). A redução do risco relativo mostrou uma redução de 36% de adquirir bacteriúria assintomática.(AU)

Indwelling urinary catheterization is a procedure that is used in inpatients and is related to high rates of asymptomatic bacteriuria and urinary tract infection. To prevent these diseases, cleaning the periurethral region prior to catheter insertion is an important approach, reducing the entry of microorganisms from this region through the urethra. Clinical practice guidelines recommend that indwelling urinary catheterization should be performed with aseptic technique, but there is no consensus on which solution is most effective for reducing urinary tract infections. The objective is to evaluate the effect of periurethral cleansing on the incidence of asymptomatic bacteria and urinary tract infections with the use of three solutions (water, soap and 2% aqueous chlorhexidine gluconate; chlorhexidine gluconate 2%, distilled water and 2% aqueous chlorhexidine; and 10% povidone-iodine, distilled water and 1% aqueous povidone-iodine) in adult patients admitted to a tertiary hospital submitted to the indwelling urinary catheterization. This is a two-step research: systematic literature review and randomized clinical trial without researcher's masking. It was performed in a large hospital in Belo Horizonte - MG. The population was composed by inpatients who were eligible to undergo indwelling urinary catheterization. A sample of 28 patients was randomly allocated into groups: soap (n = 11) and antiseptic group (n = 17). Urine cultures were collected at insertion and 24h after. The overall incidence of asymptomatic bacteriuria was 7.14%, on soap group was 9.1% and on antiseptic group was 5.9%. There were no cases of urinary tract infection. Logistic regression showed no statistically significantly differences in the incidence of asymptomatic bacteriuria when cleaned with soap or antiseptic (chlorhexidine or povidone-iodine). A relative risk reduction showed a 36% reduction from acquiring asymptomatic bacteriuria.(AU)

Talco estéril versus yodopovidona en pleurodesis como tratamiento del derrame pleural maligno. Estudio prospectivo no aleatorizado / Sterile talc versus povidone-iodine in pleurodesis as a treatment for malignant pleural effusion. Non-randomized prospective study

Comparar el uso del talco estéril versus yodopovidona como agentes químicos en pleurodesis para el tratamiento del derrame pleural maligno.Materiales y Métodos: Estudio clínico, analítico, observacional, prospectivo, el cual incluyó 12 pacientes con diagnóstico clínico e histopatológico de derrame pleural maligno, a quienes se les practicó pleurodesis empleando talco estéril y yodopovidona.Resultados : Edad promedio fue de 46,25 ± 17,3 y la neoplasia primaria más común fue el cáncer de mama, representando el 50% de los casos estudiados. El grupo de pacientes tratados con yodopovidona tuvo 100% de efectividad en la fusión pleural posterior a la pleurodesis, y presentaron menos complicaciones durante el procedimiento y 24 horas posteriores al mismo con respecto al grupo tratado con talco estéril, el cual tuvo un 71,4% de efectividad y un 28,6% de falla al procedimiento; asimismo, estos últimos presentaron mayor porcentaje de complicaciones. Por otra parte, no se evidenció recidiva del derrame pleural en los 30 días de valoración posteriores al procedimiento. Estas diferencias no fueron estadísticamente significativas.Conclusiones : Ambos agentes esclerosantes fueron eficaces para lograr la fusión de las pleuras en pacientes con derrame pleural maligno, siendo el talco estéril el agente con mayor tendencia a producir complicaciones y fallo del procedimiento, en comparación a la yodopovidona(AU)

To compare the use of sterile talc versus povidone-iodine as chemical agents on pleurodesis for the treatment of malignant pleural effusion.Materials and Methods : A total of 12 patients with clinical and histopathologic diagnose of malignant pleural effusion were enrolled in a clinical, analytic, observational and prospective trial, to whom sterile talc and povidone-iodine pleurodesis was applied.Results : The mean age was 46,25 ± 17,3 and the most common primary neoplasm was breast cancer, which was present in 50% of the surveyed cases. The group of patients who received povidone-iodine had 100% of effectiveness on post-pleurodesis pleural fusion, and had fewer complications during the procedure and 24 hours afterwards vis-à-vis the group who received sterile talc powder, which had 74.4% of effectiveness and 28.6% of procedure failure; furthermore, the last mentioned had higher percentage of complications. Moreover, there was no evidence of recurrence of pleural effusion in the 30 days post-procedure assessment.Conclusions : Both sclerosant agents were efficient to accomplish pleural fusion in patients with malignant pleural effusion, with sterile talc being the agent with higher tendency to generate more complications and procedure failure compared to povidone-iodine(AU)

O que usar no preparo cirúrgico da pele: povidona-iodo ou clorexidina? / What to use in preoperative skin preparation: povidone-iodine or chlorhexidine? / ¿Qué usar en la preparación quirúrgica de la piel: povidona-iodo o clorhexidina?

Objetivo: Discorrer sobre a eficácia do gluconato de clorexidina e do povidona-iodo em soluções aquosas ou alcoólicas na redução de infecções do sítio cirúrgico e na contagem bacteriana da pele, no preparo pré-operatório do paciente. Método: Estudo de reflexão acerca do melhor antisséptico a ser usado no preparo cirúrgico da pele. Resultados: Verificou-se que tanto a clorexidina quanto o povidona-iodo são igualmente seguros e efetivos e que os manuais de boas práticas internacionais têm recomendado a sua utilização em soluções alcoólicas. Observou-se uma tendência na indicação da clorexidina alcoólica e a emergência de estudos que têm avaliado o uso sequencial ou concomitante da clorexidina e do povidona-iodo com resultados favoráveis a essa prática. Conclusão: Há uma tendência mundial mais favorável ao uso da clorexidina alcoólica em detrimento ao povidona-iodo. Contudo, a decisão pelo melhor agente antisséptico deve considerar cada caso clínico, (contra) indicações e situação

Objective: To discuss the efficacy of chlorhexidine gluconate and povidone-iodine in aqueous or alcoholic solutions in reducing surgical site infections and skin bacterial counts in the preoperative preparation of the patient. Method: Reflective study about the best antiseptic to use in preoperative skin preparation. Results: We found that chlorhexidine and povidone-iodine are equally safe and effective and that international guidelines for good practices have recommended their use in alcoholic solutions. We observed a trend in recommending alcoholic chlorhexidine and an emergence of studies that have evaluated the sequential or concurrent use of chlorhexidine and povidone-iodine with favorable results for this practice. Conclusion: There is a global trend that favors the use of alcoholic chlorhexidine over povidone-iodine. However, the decision about the best antiseptic agent to useshould be based on each clinical case, (contra)indications, and situation

Objetivo: Discutir sobre la eficacia del gluconato de clorhexidina y del povidona-yodo en soluciones acuosas o alcohólicas en la reducción de infecciones del sitio quirúrgico y en el recuento bacteriano de la piel en la preparación preoperatoria del paciente. Método: Estudio de reflexión acerca del mejor antiséptico a utilizarse en la preparación quirúrgica de la piel. Resultados: Se ha comprobado que tanto la clorhexidina como el povidona yodo son igualmente seguros y efectivos y que los manuales de buenas prácticas internacionales han recomendado su utilización en soluciones alcohólicas. Se observó una tendencia en la indicación de la clorhexidina alcohólica y la emergencia de estudios que han evaluado el uso secuencial o concomitante de la clorhexidina y del povidona-yodo con resultados favorables a esa práctica. Conclusión: Hay una tendencia mundial más favorable al uso de la clorhexidina alcohólica en detrimento del povidona-yodo. Sin embargo, la decisión por el mejor agente antiséptico debe considerar cada caso clínico, (contra) indicaciones y situación.

Effectiveness of preoperative decolonization with nasal povidone iodine in Chinese patients undergoing elective orthopedic surgery: a prospective cross-sectional study

Staphylococcus aureus colonization in the nares of patients undergoing elective orthopedic surgery increases the potential risk of surgical site infections. Methicillin-resistant S. aureus (MRSA) has gained recognition as a pathogen that is no longer only just a hospital-acquired pathogen. Patients positive for MRSA are associated with higher rates of morbidity and mortality following infection. MRSA is commonly found in the nares, and methicillin-sensitive S. aureus (MSSA) is even more prevalent. Recently, studies have determined that screening for this pathogen prior to surgery and diminishing staphylococcal infections at the surgical site will dramatically reduce surgical site infections. A nasal mupirocin treatment is shown to significantly reduce the colonization of the pathogen. However, this treatment is expensive and is currently not available in China. Thus, in this study, we first sought to determine the prevalence of MSSA/MSRA in patients undergoing elective orthopedic surgery in northern China, and then, we treated the positive patients with a nasal povidone-iodine swab. Here, we demonstrate a successful reduction in the colonization of S. aureus. We propose that this treatment could serve as a cost-effective means of eradicating this pathogen in patients undergoing elective orthopedic surgery, which might reduce the rate of surgical site infections.

Accidental oral administration of povidone iodine in a newborn: case report.

Iodine solutions are widely used as antiseptic for treating and preventing wound infections. Povidone iodine, one of the most common topical iodine solutions in emergency kits, can lead to several abnormalities as thyroid dysfunction. Povidone iodine poisoning is unusual and previously reported effects are mainly complications of topical usage during surgical procedures. Here we present the case of a newborn that was accidentally given oral povidone iodine, showing no signs or symptoms of toxicity after ingestion.

Las soluciones yodadas se utilizan ampliamente como antiséptico para el tratamiento y la prevención de infecciones en las heridas. La povidona yodada, una de las soluciones yodadas de aplicación tópica que más se encuentra en los botiquines de emergencia, podría producir anomalías graves, como disfunción tiroidea. La intoxicación por povidona yodada es poco frecuente; entre los efectos notificados previamente se incluyen complicaciones del uso tópico durante procedimientos quirúrgicos. Se describe el caso de un neonato que recibió povidona yodada por vía oral accidentalmente, sin signos ni síntomas de toxicidad después de la ingesta.

Administración oral accidental de povidona yodada a un neonato: a propósito de un caso / Accidental oral administration of povidone iodine in a newborn: Case report

Las soluciones yodadas se utilizan ampliamente como antiséptico para el tratamiento y la prevención de infecciones en las heridas. La povidona yodada, una de las soluciones yodadas de aplicación tópica que más se encuentra en los botiquines de emergencia, podría producir anomalías graves, como disfunción tiroidea. La intoxicación por povidona yodada es poco frecuente; entre los efectos notificados previamente se incluyen complicaciones del uso tópico durante procedimientos quirúrgicos. Se describe el caso de un neonato que recibió povidona yodada por vía oral accidentalmente, sin signos ni síntomas de toxicidad después de la ingesta.

Iodine solutions are widely used as antiseptic for treating and preventing wound infections. Povidone iodine, one of the most common topical iodine solutions in emergency kits, can lead to several abnormalities as thyroid dysfunction. Povidone iodine poisoning is unusual and previously reported effects are mainly complications of topical usage during surgical procedures. Here we present the case of a newborn that was accidentally given oral povidone iodine, showing no signs or symptoms of toxicity after ingestion.

Full-mouth ultrasonic debridement associated with povidone iodine rinsing in GAgP treatment: a randomised clinical trial.

OBJECTIVE: This study evaluated the clinical, immunological and microbiological results of full-mouth ultrasonic debridement (FMUD) with 10 % povidone iodine (PVPI) as the cooling liquid in the treatment of generalised aggressive periodontitis (GAgP). MATERIAL AND METHODS: Twenty-eight patients presenting GAgP were randomly assigned to one of the following groups for evaluation: FMUD + SS (n = 14)--single session of FMUD with 0.9 % saline solution as cooling agent and FMUD + PVPI (n = 14)--single session of FMUD with PVPI solution as cooling agent. Probing depth (PD), relative clinical attachment level (RCAL), relative position of gingival margin, plaque index (FMPI) and bleeding score (FMBS), immunological (interleukin-10 and interleukin-1ß concentrations in gingival crevicular fluid) and microbiological (Aa and Pg amounts) parameters were evaluated at baseline, first, third and sixth months after treatment. RESULTS: The two groups presented reduction of FMPI and FMBS and had statistically significant PD reductions, RCAL gains and gingival recession (p < 0.05). Both therapies reduced Pg levels in deep and in moderate pockets (p < 0.05). FMUD + PVPI reduced Aa levels in deep pockets. However, no inter-group differences in clinical, immunological and microbiological parameters were observed (p > 0.05). CONCLUSIONS: It could be concluded that 10 % PVPI used as an irrigant solution in FMUD decreased Aa levels in deep pockets but had no additional benefits when compared with saline solution irrigation in terms of clinical, microbiological and immunological results. CLINICAL RELEVANCE: The FMUD is a valid option for the treatment of GAgP, but the use of 10 % PVPI did not improve the results of the periodontal therapy.

Incidência de infecção do trato urinário relacionada ao cateterismo vesical de demora: um estudo de coorte / Incidence of catheter-related urinary tract infecions: a cohort study / Incidencia de infección del tracto urinario relacionada con cateterismo vesical de demora: estudio de cohorte

Estudo de coorte não concorrente com informações de 301 de pacientes internados em centros de terapia intensiva de dois hospitais públicos de Belo Horizonte. O objetivo foi analisar os aspectos epidemiológicos das infecções do trato urinário em pacientes submetidos ao cateterismo vesical de demora, estimar a taxa de incidência nos dois hospitais, identificar possíveis fatores de risco relacionados à infecção e aos microrganismos causadores. A amostra constituiu-se de todos os pacientes internados nas duas unidades e que foram submetidos ao cateterismo vesical de demora no período de seis meses. Dos 301 pacientes, 23 desenvolveram infecção, sendo 56,52% do sexo masculino e com idade superior a 60 anos. A incidência global de infecção do trato urinário foi de 6,70 infecções/1.000 cateteres-dia. O hospital que utilizou água e sabão para a higiene periuretral apresentou maior incidência do que o hospital que utilizou antisséptico (14,01 e 3,05 infecções/1.000 cateteres-dia, respectivamente). O fator de risco identificado foi a higienização periuretral com água e sabão. Os microrganismos mais prevalentes nas uroculturas foram Pseudomonas aeruginosa (17,39%) Candida sp. (13,04%), Escherichia coli (13,04%), e Proteus mirabilis (8,70%). O resultado encontrado neste estudo contradiz os achados da literatura e reforça a necessidade de estudos primários que identifiquem a solução mais eficaz para a realização da limpeza periuretral com vistas à redução da infecção do trato urinário relacionada ao cateterismo vesical de demora.

This is a non-concurrent cohort study that uses data from 301 patients admitted to the intensive care unit of two public hospitals in Belo Horizonte.It aimed at analysing epidemiological aspects of urinary tract infections amongst patients with indwelling bladder catheterization, evaluatingthe incidence rate of the infection in the two hospitals and identifying possible risk factors related to the infection. Sample consisted of patientsthat underwent indwelling catheterization for a period of six months. Of the 301 patients, 23 developed infection: 56.52% were male and aged60 years and over. The overall incidence of urinary tract infection was 6.70 infections/1000 catheter-days. The hospital using water and soap forperiurethral cleaning presented higher incidence of urinary infection than the hospital using antiseptic (14.01 and 3.05 infections/1000 catheterdays, respectively). Risk factor identified was periurethral cleaning with soap and water. The most prevalent microorganisms in urine cultures were Pseudomonas aeruginosa (17.39%), Candida sp. (13.04%), Escherichia coli (13.04%), and Proteus mirabilis (8.70%). This study results contradict theliterature which demonstrates the need for primary research aimed at identifying the most effective solution for periurethral cleaning in order toreduce catheter-related urinary tract infections.

Estudio de cohorte no concurrente con información de 301 pacientes internados en centros de terapia intensiva de dos hospitales públicos de BeloHorizonte. El objetivo fue analizar la epidemiología de las infecciones del tracto urinario en pacientes sometidos a cateterismo vesical permanente,estimar la tasa de incidencia en cada hospital, identificar posibles factores de riesgo relacionados con las infecciones del tracto urinario e identificarlos microorganismos causantes de la infección. La muestra estuvo constituida por todos los pacientes de las unidades sometidos a cateterismovesical permanente en un período de seis meses. De los 301 pacientes, 23 desarrollaron la infección, siendo 56,52% del sexo masculino y edad superiora 60 años. La incidencia global de infección del tracto urinario fue de 6,70 infecciones/1.000 catéteres/día. El hospital que utilizó agua y jabón para lalimpieza periuretral presentó mayor incidencia que el hospital que utilizó antiséptico (14,01 y 3,05infecciones/1.000 catéteres/día, respectivamente).El factor de riesgo identificado fue la utilización de la técnica de limpieza con agua y jabón. Los microorganismos más prevalentes en los urocultivos fueron Pseudomonas aeruginosa (17,39%) Candida sp. (13,04%), Escherichia coli (13,04%), and Proteus mirabilis (8,70%). El resultado encontradocontradice los de la literatura y refuerza la necesidad de estudios primarios que identifiquen la solución más eficaz para la limpieza periuretral conel fin de reducir la infección del tracto urinario relacionada con el cateterismo vesical permanente.

Na antissepsia peri-bucal pré-operatória de exodontias deve-se utilizar clorexidina ou pvp-i? / Should chlorhexidine or pvp-i be used in preoperative peri-oral antisepsis of extractions?

A odontologia contemporânea tem se preocupado de grande maneira com o aumento de transmissão de doenças infecto-contagiosas e contaminação cruzada no sítio cirúrgico. Este estudo objetivou avaliar a eficácia da antissepsia em efeito imediato de dois antissépticos na redução bacteriana da região peri-bucal, previamente aos procedimentos cirúrgicos em exodontia. A pesquisa foi realizada nas clínicas odontológicas do Centro de Ensino Superior dos Campos Gerais (CESCAGE), localizado na cidade de Ponta Grossa-PR. Para realização do experimento foram coletadas amostras de 38 pacientes. Em cada paciente foram colhidas 3 amostras, divididas essas em 3 grupos: Grupo A: Material Controle, Grupo B: Digluconato de Clorexidina a 2% e Grupo C: PVP-I (polivinilpirrolidona-iodo). Em 12 pacientes foram enriquecidas as placas com o caldo de BHI (Infusão Cérebro Coração). Nos demais 26 pacientes as amostras foram coletadas sem o uso do caldo de BHI. Nos resultados com a utilização do caldo de BHI, as amostras sofreram alterações, pois esse enriqueceu as colônias de bactérias, promovendo o seu crescimento desproporcional e exacerbado e inativando o efeito dos antissépticos, não tendo um resultado confiável. Em relação aos 26 pacientes sem uso do caldo de BHI, compreende-se que o digluconato de clorexidina a 2% das 26 amostras coletadas, em 2 mostrou-se não eficaz, em 13 razoável e em 11 eficaz. Já no Grupo PVP-I, 11 mostraram- -se não eficazes, sendo 10 amostras razoáveis e 5 eficazes. Portanto, pode-se concluir que a clorexidina apresentou resultados melhores, mostrando-se excelente, com maior redução da carga microbiana do que o PVP-I (AU).

The contemporary dentistry has been really concerned with the increased transmission of infectious diseases and cross contamination at the surgical site. This study aimed to evaluate the efficacy of antisepsis into immediate effect of two antiseptics in bacterial reduction of peri-oral region prior to surgical procedures for extraction. The research was conducted in dental clinics of the Centro de Ensino Superior dos Campos Gerais (CESCAGE), located in the city of Ponta Grossa-PR. To perform the experiment samples of 38 patients were collected. Three samples of each patient were collected and they were divided into 3 groups: Group A: Control Material, Group B: Chlorhexidine Digluconate 2% and Group C: PVP-I (polyvinylpyrrolidone-iodine). In 12 patients plates were enriched with BHI broth (Brain Heart Infusion). In the remaining 26 patients samples were collected without the use of BHI broth. In the results with the use of BHI broth, samples have suffered alterations, as this enriched bacteria colonies promoting their disproportionate overgrowth and inactivating the effect of antiseptics, not having a reliable result. In relation to 26 patients without the use of BHI broth, it is understood that the chlorhexidine digluconate 2% of the 26 samples collected showed in two of them to be not effective, in 13 reasonable and in 11 effective. In the PVP-I Group, 11 proved to be not effective, 10 samples reasonable and 5 effective. Therefore, it can be concluded that chlorhexidine presented best results, showing to be excellent, with greater reduction of microbial load than PVP-I (AU).

[Intrarectal povidone-iodine to reduce the risk of genitourinary infections after transrectal prostate biopsy]. / Iodopovidona intrarrectal y riesgo de infección genito- urinaria posterior a biopsia prostática transrectal.

BACKGROUND: The aim of this study is to compare two different preparations in patients undergoing transrectal prostate biopsies samples (TPBS) and assess the prevalence of genitourinary infections (GUI). METHODS: A historical cohort of patients undergoing TBPS for suspected prostate cancer. Two groups were compared: one with endorectal lubricant jelly and another with the addition of a povidone-iodine lubricating jelly. Complications were evaluated at three weeks. A bivariate analysis was performed by calculating the OR (95 % CI) to determine if the additional endorectal povidone-iodine pre-TBPS reduced GUI and other complications. RESULTS: 185 patients (Group I n = 86, Group II n = 96) were evaluated. 45 and 25 % had genitourinary tract infection (OR: 0.4, CI: 0.2-0.9, p = 0.004); fever was presented in 21 and 10 % respectively (OR: 0.42, CI: 0.1-0.9, p = 0.04). CONCLUSIONS: A reduction was observed in the presence of genitourinary infections in patients who had intrarectal povidone-iodine preparation applied.

Introducción: el objetivo de este estudio es comparar dos preparaciones distintas en pacientes sometidos a la toma de biopsias prostáticas transrectales (BPTR) y evaluar la prevalencia de infecciones genitourinarias (IGU). Métodos: se compararon dos grupos de pacientes con sospecha de cáncer de próstata sometidos a Biopsia Prostática Transrectal (BPTR): Con jalea lubricante endorrectal (grupo l, cohorte histórica) y con jalea lubricante más iodopovidona (grupo II, cohorte prospectiva). Se evaluaron las complicaciones a las tres semanas. Se realizó un análisis bivariado, calculando su OR (IC: 95 %) para determinar si la iodopovidona endorrectal adicional previa a la BPTR disminuye las IGU y otras complicaciones. Resultados: Se evaluaron 185 pacientes (Grupo I n = 86; grupo II n = 96). Tuvieron infección del tracto genitourinario el 45 y 25 % (OR: 0.4, IC: 0.2-0.9, p = 0.004); la fiebre se presentó en el 21 y 10 % respectivamente (OR: 0.42, IC: 0.1-0.9, p = 0.04). Conclusiones: Se observó una reducción en la presencia de infecciones genitourinarias en pacientes a quienes se aplicó en su preparación iodopovidona intrarrectal.