为输血实践建立证据:一项关于红细胞输血组中的细菌粘附和生长的试点研究
Zoya Versey1,2, Yuntong Kou1, Paula van Vliet3
1Medical Microbiology, Canadian Blood Services, Ottawa, Ontario, Canada.
Transfusion
|February 11, 2026
概括
这项研究发现,血液注射组中的细菌生长是最小的,这表明目前的4小时更换间隔可能会延长. 将血液的使用时间延长至6小时,可以提高患者的安全性,并优化资源的使用.
科学领域:
- 微生物学 微生物学
- 输血医学 输血医学
- 感染控制 感染控制
背景情况:
- 目前的指导方针要求每4小时更换一次血液给药组,以防止细菌污染.
- 这个间隔的理论基础涉及潜在的细菌附着到设置表面.
研究的目的:
- 在模拟红细胞缩物 (RBCC) 输血期间,在血液注射组内调查细菌粘附和增殖.
- 为了评估延长血液输送使用的安全性和可行性,将血液输送设置超出标准的4小时间隔.
主要方法:
- 模拟输血使用红细胞缩剂 (RBCCs) 与不同度的Serratia marcescens (10,1和0.1CFU/mL) 增添.
- 在不同的时间点 (2,8小时和24小时) 使用培养和扫描电子显微镜评估了细菌的恢复和粘附.
- 进行了多个研究阶段,不同的初始细菌负载和恢复间隔.
主要成果:
- 在2小时后的初始度为1CFU/mL时,细菌的恢复是最小的.
- 在初始负载为1CFU/mL的24小时内观察到显著的细菌增殖.
- 在非常低的初始负载 (0.1CFU/mL) 时,细菌仅在8-24小时后被检测出来,主要是在过器内.
结论:
- 试点数据表明,在输血组中可能会发生细菌生长.
- 从4个小时延长血液输送套件的使用到至少6个小时可能是安全的.
- 这些发现支持现有的指导方针,该指导方针主张在血液产品的剂量变化之间进行更长的间隔.
相关概念视频
01:15Blood Transfusion
2.4K
Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
2.4K
02:45Blood Transfusion and Agglutination
14.9K
Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
14.9K
02:55The Evidence for Evolution
48.4K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
48.4K
01:28Bacterial Growth Curve
2.9K
The bacterial growth curve is a fundamental concept in microbiology that describes the dynamics of bacterial population growth in a closed system with controlled environmental conditions, such as temperature and nutrient availability. This curve is divided into four distinct phases: lag, log (exponential), stationary, and death phases, each reflecting a unique stage of bacterial adaptation and growth. During the lag phase, bacteria acclimate to their surroundings by synthesizing essential...
2.9K
01:14Adhesion
44.6K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Capillary action is a result of water’s adhesive tendencies. When a narrow...
44.6K
01:21Pilot and Numeric Relaying
496
Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
496