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相关概念视频

Hand hygiene01:23

Hand hygiene

Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Cleaning, Sterilization, and Disinfection01:30

Cleaning, Sterilization, and Disinfection

Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease.
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Methods of Sterilization I: Physical Methods01:29

Methods of Sterilization I: Physical Methods

As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation.
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
Methods of Sterilization II: Chemical Methods01:30

Methods of Sterilization II: Chemical Methods

In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
Chemical Agents for Microbial Control01:27

Chemical Agents for Microbial Control

Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...

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相关实验视频

Updated: Jul 22, 2026

Determining Viral Disinfection Efficacy of Hot Water Laundering
06:57

Determining Viral Disinfection Efficacy of Hot Water Laundering

Published on: June 21, 2022

用于消毒受污染的医疗器械的新方法.

Guillaume Fichet1, Emmanuel Comoy, Christelle Duval

  • 1CEA/DSV/DRM/GIDTIP, Route du Panorama, 92265 Fontenay-aux-Roses, France.

Lancet (London, England)
|August 11, 2004
PubMed
概括

新的方法有效地使医疗器械上的子失活,包括蒸发过氧化 (VHP). 这些发现为仪器和表面提供了更安全的脱污,防止像克鲁茨菲尔特-雅各布病变体这样的普里昂疾病.

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Rapid Detection of Bacterial Pathogens Causing Lower Respiratory Tract Infections via Microfluidic-Chip-Based Loop-Mediated Isothermal Amplification
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Automated Hospital Room Disinfection Utilizing a Novel Aerosolized Hydrogen Peroxide Microdroplet Disbursing Technology
06:27

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Rapid Detection of Bacterial Pathogens Causing Lower Respiratory Tract Infections via Microfluidic-Chip-Based Loop-Mediated Isothermal Amplification
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科学领域:

  • 传染病控制和控制传染病
  • 生物化学 生物化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 子抵御标准的消毒,通过医疗器械构成感染风险.
  • 变体克鲁茨菲尔特-雅各布病 (vCJD) 病原体的广泛分布需要改进的离子失活方法.
  • 医疗保健设施面临的挑战是对仪器和表面进行脱污染,以防止性疾病.

研究的目的:

  • 评价用于非活化的创新物理和化学去污方法.
  • 开发和使用体外和体外模型来测试净化疗效.
  • 确定可行的程序,以确保医疗和手术仪器的安全.

主要方法:

  • 通过使用受污染的不钢电线,调整了一个活体子适应的Scrapie菌株263K模型.
  • 开发了一种体外表面污染协议,用于生物化学检测抗蛋白酶的蛋白 (PrP(res)).
  • 研究了各种物理 (自封) 和化学 (消毒剂,VHP) 消毒方法的有效性.

主要成果:

  • 标准方法 (NaOH,NaOCl,在水中自封) 实现了>5.6 log10的感染性降低.
  • 在没有浸泡的情况下进行自闭包,可使传染性降低4-4.5 log.
  • 较温和的治疗方法,包括性消毒剂,性清洁剂和用VHP的酶性清洁剂是有效的. 仅VHP就实现了4.5日志的减少.

结论:

  • 蒸发过氧化 (VHP) 提供了一种与电子元件兼容的有效的离子失活方法.
  • 对于无法承受当前高级别无效化方法的医疗仪器和表面,提出了新的除污处理程序.
  • 这些进展旨在提高安全性,并防止卫生保健机构中性疾病的转移.