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由水溶性聚合物制备多功能碳纳米纤维垫

国际纺织导报 2016年第11期44卷 16-18,20页

作者： L.D.Cremar J.Acosta-Martinez A.villarreal A.Salinas L.Wei Y.B.Mao K.Lozano 钟晓慧(译) 王依民(校) 格兰德山谷Texas-Rio大学美国不详

聚合物前驱体成本高、碳化后处理工艺中有机溶剂的应用,以及能源消耗等问题,限制了碳纤维在日常生活中的应用。采用离心力纺丝技术及在酸蒸气中脱水的方法制备非织造纳米纤维垫,并采用低温碳化工艺(t<800℃)制备多功能碳纳米纤维。这种... 详细信息

聚合物前驱体成本高、碳化后处理工艺中有机溶剂的应用,以及能源消耗等问题,限制了碳纤维在日常生活中的应用。采用离心力纺丝技术及在酸蒸气中脱水的方法制备非织造纳米纤维垫,并采用低温碳化工艺(t<800℃)制备多功能碳纳米纤维。这种方法可以制备微孔与中孔的多孔非织造碳纤维织物或纱线。纤维的直径可在几百纳米到几微米之间变化。热物理和微观结构表征表明,化学和热处理过程中的碳化形成了石墨。所制备的纤维表现出较高的导电性和比表面积,以及良好的热稳定性、疏水性和亲油性。

关键词：碳纳米纤维多功能水溶性聚合物离心力纺丝

Breast Reconstruction: Does It Worth to Start If the Patient Is Not Sure to Take All the Process Along?

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Journal of Biosciences and Medicines 2022年第8期10卷 201-209页

作者： Jesús Ricardo García-Corral José Martínez-Lopez Rodrigo Davila-Diaz Blanca Arambula-Sanchez Marco Cuervo-Vergara Fernando Barbosa-villarreal Daniel De Luna Ana Priscila Campollo Lopez Fernando Isaac Recio Espana Alfredo Chama Naranjo Jaime García Alejandro Costa David Flores-Soto Selina Marioni-Manriquez Patricia Lopez-Medellin Erika Barlandas-Quintana Edgar Guillen-Martinez Steve Rodriguez-Alanis Cuahutemoc Marquez Departamento de Cirugía Plástica y Reconstructiva Hospital Central Sur de Alta Especialidad PEMEX Mexico City Mexico

Introduction: Breast cancer is the most common cancer in women worldwide, representing a major public health problem. There is still little information comparing the satisfaction of the patients who finished their process against the ones who start it but did not finish it. The aim of our retrospective study was to analyze the results in terms of satisfaction after one year of undergoing to complete breast reconstruction (CBR) vs incomplete breast reconstruction (IBR). Materials and Methods: Retrospective study of patients that underwent breast reconstruction (BR) surgery after mastectomy for breast cancer treatment. Performed at Hospital Central Sur de Alta Especialidad PEMEX in Mexico City, including patients from January 1, 2015 to January 01, 2020. Demographic baseline variables were included. BREAST-Q satisfaction questionnaires one year after the last reconstructive procedure were analyzed. Results: A total of 44 patients fulfilled the inclusion criteria. Of these 44 patients, 11 were included in the IBR group, and 33 patients in the CBR group. There were no statistically significant differences between the two groups in terms of age (IBR 56.09 vs CBR 53.06 years, p = 0.321);BMI (IBR 27.94 vs CBR 26.40, p = 0.253), time from mastectomy to first reconstructive procedure (IBR 22.8 vs CBR 31 months, p = 0.957), history of chemotherapy (IBR 27.3% vs CBR 33.3%, p = 0.709) and radiotherapy (IBR 54.5% vs CBR 42.4%, p = 0.484), additionally type of reconstruction, affected side or complication rate were not significantly different. Regarding postoperative satisfaction, only the second module of satisfaction with breasts displayed statistically significant differences, with a higher score in the CBR group (46.27 vs 52.27, p = 0.019). Other items explored didn’t show significant differences. Discussion: The data reported in this study suggest that regardless of whether the last stage of a BR is reached, the results in these settings can be very similar in terms of psych

关键词： BREAST-Q Breast Reconstruction Satisfaction Index Quality of Life Breast Cancer Patient’s Decision Making

世界卫生组织在2019新冠肺炎疫情危机、人权和变动世界秩序中的作用

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人权 2020年第5期 164-188页

作者： [德]阿明·冯·伯格丹迪 [墨]佩德罗·A.维拉瑞尔郭晓明(译) 德国马克斯·普朗克比较公法与国际法研究所德国法兰克福大学中国人民大学人权研究中心

在2019新冠肺炎疫情大流行期间,规模空前的国家权力似乎成为了当世的呼声,而国际权威在很大程度上显得无关紧要。相反,本文将要表明国际权威在全球疫情应对中发挥着核心作用,同时,一些没有看清这一点的政府甚至有可能促成多边世界秩序... 详细信息

在2019新冠肺炎疫情大流行期间,规模空前的国家权力似乎成为了当世的呼声,而国际权威在很大程度上显得无关紧要。相反,本文将要表明国际权威在全球疫情应对中发挥着核心作用,同时,一些没有看清这一点的政府甚至有可能促成多边世界秩序的转变。对此,针对当前这一困难重重的全球治理实例,本文将首先提出一些把握世界卫生组织权威的要点。然后,本文将分析世界卫生组织在当前大流行应对中的三个有争议的贡献,包括具体的规制框架;对2020年卫生危机作为突发事件表态,其中因推迟一周而招致大量批评;提出具体的行事建议,特别是其关于反对旅行禁令的建议被指责为是对各国政府的妨碍。随后,本文转而提出两个更为广泛的问题:第一个问题关注的是世界卫生组织在多方力量冲突下的技术角色,即世界卫生组织关于隔离和检疫的建议如何与人权相协调;第二个问题关系到世界卫生组织在当前中国与西方(特别是美国)动态关系中的立场问题。

关键词：冠状病毒大流行 2019冠状病毒病世界卫生组织国际卫生法大规模检疫人权国际公共权威

Managament Wound Healing: The Importance of a Wound Clinic in Hospital Centers

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Modern Plastic Surgery 2023年第4期13卷 118-125页

作者： Alfredo Chama Naranjo Cuahutémoc Márquez Espriella Alberto Ignacio Cahuana Quispe Barbosa villarreal Fernando Ana Priscila Campollo López Mauricio Gutiérrez Álvarez Carlos Emiliano García Córdova Jesús Ricardo García Corral Cuervo Vergara Marco Antonio Jorge Luis Rosales Becerra Dávila Díaz Rodrigo Edgar Alan Guillen Martínez Marín Canto Miguel Eduardo Luis Arturo Herrera Lozano Ochoa Contreras Erick Cesar Martinez Villalobos Claudia Nallely Cruz Soto Randall Camacho Rodriguez Hayah Ricardo Alberto Pulido López Edwing Michel Jaimes Durán Department of Plastic and Restrictive Surgery Hospital Central Sur de Alta Especialidad Pemex Mexico City Mexico

Background: In clinical practice, acute and chronic wounds continue to be a challenge. Unfortunately, wound care is often inadequate or inappropriate. The implementation of wound clinics involving an interdisciplinary team for wound care and treatment yields favorable clinical outcomes as well as a reduction in economic expenses due to a higher rate of healing, a decrease in hospital stays, and a reduction in the number of readmissions. The establishment of wound clinics enhances the utilization of diagnostic, preventive, and therapeutic resources, improving the quality of life of patients and facilitating their reintegration into their normal lives. The objective is solely to describe the importance of wound clinics in the medical profession. Methods: A retrospective literature search was conducted to include articles no more than 10 years old that reported measures or results of the study in order to perform a literature review and describe the importance of wound clinics in medical practice. Results: A total of 7 articles were obtained with the inclusion criteria, the most recent being from the year 2023 and the oldest from 2013. Conclusion: An important area for improvement in the healthcare industry is the management and treatment of complex wounds. The establishment of wound clinics offers comprehensive and specialized care for both acute and chronic complex wounds with the goal of enhancing secondary illness patients’ prevention, treatment, and rehabilitation.

关键词： Wound Clinic Pressure Ulcer Chronic Wound Wound Healing Quality of Life

Management of Complex Wounds with Dermal Substitute Assisted by a Negative Pressure System

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Modern Plastic Surgery 2023年第4期13卷 95-105页

作者： Cuahutémoc Márquez Espriella Ruiz Garza Jorge Gerardo Barbosa villarreal Fernando Dávila Díaz Rodrigo Cuervo Vergara Marco Antonio Campollo López Ana Priscila Gutierrez Alvarez Mauricio Chama Naranjo Alfredo García Corral Jesús Ricardo Pérez Benítez Omar Alberto Pulido López Ricardo Alberto Jaimes Duran Edwing Michel Garibaldi Bernot Mauro Cortes Aguilar Carlos Manuel García Córdova Carlos Emiliano Camacho Rodriguez Hayah Camacho Rodriguez Hayah Martinez Villalobos Claudia Nallely Ochoa Contreras Erick Cesar Randall Cruz Soto Herrera Lozano Luis Arturo Department of Plastic and Reconstructive Surgery Hospital Central Sur Petróleos Mexicanos Mexico City Mexico

Introduction: The standard treatment for complex wound care is autografting. The advent of dermal substitutes has provided a novel tool for the preparation of the bed to be grafted. However, most types of dermal matrices require the application of a skin graft a second time. Currently, other strategies have been developed to improve the vascularization process, such as negative pressure wound therapy (NPWT), which has been reported to reduce the time required for vascular growth and dermal matrix integration and thus achieve a shorter waiting period for autologous graft application. The present study aims to evaluate the effectiveness and safety of dermal matrix management associated with NPWT in the treatment of complex wounds. Methods: Seven patients with a diagnosis of complex wounds were enrolled in this study between July 1, 2015, and June 31, 2016. After debridement and having an adequate wound bed, patients who met the criteria for the application of combined therapy were treated with dermal substitutes and a negative pressure system. The percentage of graft integration into the wound bed, complications, length of hospital stay, and duration of therapy were analyzed. Results: The mean age was 42.5 ± 16 (39 - 54) years old;three women and four men were included in the study. The approximate size of skin loss was 120.7 ± 75 cm2 (25 - 250 cm2). The combined therapy of dermal matrix plus NPWT was instituted in all cases for a period of 14 days. There were no complications, with 100% graft integration in 6 of 7 cases. Patients were discharged after a mean hospital stay of 5.4 days. Conclusions: This study demonstrates that the utilization of combined dermal matrix plus NPWT therapy can be performed safely and effectively in patients with complex wounds with low complication rates and a short hospital stay.

关键词： Negative Pressure Wound Therapy Complex Wound Dermal Matrix Wound Therapy

Epidemiology of Fingertip Injuries at South Central Hospital Petróleos Mexicanos “Pemex” with a Review of the Literature

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Journal of Biosciences and Medicines 2023年第6期11卷 182-195页

作者： Fernando Barbosa-villarreal Cuahutémoc Márquez-Espriella Erika Barlandas-Quintana Ana Priscila Campollo-López Mauricio Gutiérrez-Álvarez Carlos Emiliano García-Córdova Jesús Ricardo García-Corral Alfredo Chama-Naranjo Ricardo Alberto Pulido-López Patricia Llizette López-Medellín Edgar Alan Guillen-Martínez Jonathan Steve Rodríguez-Alaníz Edwing Michel Jaimes-Duran Carlos Manuel Cortes-Aguilar Mauro Garibaldi-Bernot Omar Alberto Pérez-Benítez Miguel Eduardo Marín-Canto Luis Arturo Herrera-Lozano Héctor Manuel Suarez-Ortega Alejandro Cruz-Zarate Department of Plastic and Reconstructive Surgery Hospital Central Sur Petróleos Mexicanos Mexico City Mexico

Background: The hand is an essential component for performing our daily tasks;as a result, injuries to the fingertip are frequently seen. Accurate evaluation and treatment of fingertip injuries are essential to avoiding long-term disability, job loss and psychological issues. No matter the injury classification system, maintaining finger length, regaining sensation, and improving appearance are the three main objectives of treatment. The objective of this research was to outline the epidemiology of fingertip injuries treated between 2021 and 2022 at a highly specialized referral hospital in Mexico City. Methodology: This investigation is cross-sectional, retrospective, and observational. From January 2021 to December 2022, 60 patients with a diagnosis of fingertip injury from the South Central Hospital “Pemex” were included. The descriptive statistical analysis was performed using SPSS29. Results: 60 patients were included, 27 (45%) were women and 33 (55%) were men. Allen’s classification was able to classify only 19 patients, of which 18 (94.7%) had a type 1 classification and one (5.26%) had a type 2 classification. 10% of patients experienced complications, which included 2 patients with surgical site infections (3.3%), 3 patients with persistent pain (5%), and 1 patient (1.6%) with graft rejection. Conclusions: There are currently insufficient epidemiological data on hand and wrist injuries and its effects on labor in Mexico. Fingertip injuries require particular care in order to prevent complications and long-term damage. The creation of national registries could help with the creation of reference manuals for the care of hand and wrist injuries in our nation.

关键词： Fingertip Fingertip Injuries Epidemiology

Description of the Factors Associated with Trigger Finger in Patients Treated at Petroleos Mexicanos “Pemex”

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Journal of Biosciences and Medicines 2023年第7期11卷 151-159页

作者： Fernando Barbosa-villarreal Cuahutémoc Márquez-Espriella Rodrigo Dávila-Díaz Marco A. Cuervo-Vergara Blanca Y. Arambula-Sánchez Alberto I. Cahuana-Quispe Victor A. Esquivel-Chávez Carlos E. García-Córdova Ana P. Campollo-López Mauricio Gutierrez-Alvarez Jesus R. García-Corral Alfredo Chama-Naranjo Daniel de Luna-Gallardo Ricardo A. Pulido-López Isaac F. Recio-España Esteban I. Campos-Serna Carlos I. Navarro-Delgadillo José C. Martínez-López Victor H. Avalos-Gómez Alejandro Cruz-Zarate Department of Plastic and Reconstructive Surgery Hospital Central Sur Petróleos Mexicanos Mexico City Mexico

Background: The trigger finger, also known as stenosing tenosynovitis of the flexor tendon, is a common cause of hand disability;This can result in significant limitations in certain daily living activities. It is possible to treat this condition with conservative or surgical methods. Methods: This is a retrospective, observational, cross-sectional and descriptive study. The source population consisted of all patients with a diagnosis of trigger finger who had been treated in the department of plastic and reconstructive surgery of our institution between 2020 and 2023. The primary objective of this study is to determine the prevalence and characterize the clinical and surgical characteristics of the population affected by trigger finger in our hospital. Results: The total population was 237 patients, of which 165 were women (70%) and 72 men (30%). The most affected hand was the right hand, with a total of 158 patients (67%). In the right hand, the middle finger was the most affected (45%). Of the 237 patients, 80 of them had obesity (34%), 86 had type 2 diabetes mellitus (36%), 95 had systemic arterial hypertension (40%). Open technique was performed in 190 (80%) patients, while percutaneous technique was performed in 47 (20%) of them. Conclusion: The female sex was twice as frequent, and the middle finger and thumb were the most affected. Most of the patients received surgical treatment with open approach and percutaneous approach in 20% of them.

关键词： Trigger Finger Tendinopathy