相关实验视频
Updated: Jan 29, 2026

08:10
Diagnosing Pulmonary Tuberculosis with the Xpert MTB/RIF Test
Published on: April 9, 2012
81.9K
离心处理与无离心便处理:使用Xpert MTB/RIF Ultra,简单的一步方法可以可靠地诊断儿童肺结核吗?
S M Mazidur Rahman1, Senjuti Kabir1, Sabrina Choudhury1
1Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, Dhaka 1212, Bangladesh.
Diagnostics (Basel, Switzerland)
|January 28, 2026
概括
用Xpert MTB/RIF Ultra的简单单一步 (SOS) 便处理方法诊断儿科肺结核 (PTB) 错过了许多低细菌负担的病例. 建议使用离心处理 (CBP) 来改善儿童结核病检测.
科学领域:
- 医学诊断 医学诊断 医学诊断
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 儿童肺结核 (PTB) 诊断通常依赖于基于便的测试.
- 基因Xpert MTB/RIF Ultra (Ultra) 是PTB的一个关键诊断工具.
- 评估不同的便处理方法对于优化儿童PTB检测至关重要.
研究的目的:
- 为了比较两个便处理方法的诊断性能:离心处理 (CBP) 和简单的一步处理 (SOS).
- 评估Xpert MTB/RIF Ultra测定在使用CBP和SOS方法检测儿科PTB的效率.
- 确定最大限度地提高儿童结核病检测率的最佳方法.
主要方法:
- 在孟加拉国七个部门对疑似PTB的儿童进行横截面查.
- 便样本使用Xpert MTB/RIF Ultra与CBP方法进行了测试.
- 一个样本的子集使用Ultra测试与SOS方法进行了重新测试以进行比较.
主要成果:
- 与CBP相比,SOS方法显示了50.8%的积极同意和100%的负面同意.
- 总体而言,CBP和SOS方法之间的一致性为66.6% (卡帕:0.398).
- 通过SOS方法降低了对"痕迹检测"细菌负担的敏感性,错过了CBP发现的85.1%的这些病例.
结论:
- 简单的一步 (SOS) 便处理方法显著低于检测儿科肺结核,特别是在细菌负载较低的情况下.
- 在使用Xpert MTB/RIF Ultra测定时,以离心机为基础的处理 (CBP) 证明了在检测儿童结核病方面的卓越性能.
- 国家计划应优先考虑CBP方法处理便样本,以提高儿童结核病的诊断.
相关概念视频
Centrifugation
7.9K
Centrifugation is a separation technique based on differences in density or size. It is commonly used to separate solids from aqueous interferents. During centrifugation, the sample is placed in centrifugation tubes and spun at high angular velocity, which allows centrifugal force to act differentially on the different densities or masses of the components. After spinning, the supernatant liquid is decanted. Depending on the specific application, either the pellet or the supernatant is retained...
7.9K
Centrifugal Force
4.1K
Pseudo forces, or fictitious forces, appear to act on an object in motion in a rotating frame of reference with respect to an inertial reference frame. These forces are not real forces but rather mathematical constructs and are introduced to simplify calculations in a non-inertial frame while using Newton's laws of motion. Common examples of pseudo forces include centrifugal, Coriolis, and Euler forces. These forces are essential in fields such as mechanics, astrophysics, and fluid...
4.1K
Pulmonary Tuberculosis I
923
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
923
Pulmonary Tuberculosis II
1.5K
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
1.5K
Pulmonary Tuberculosis V
586
Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
586
Pulmonary Tuberculosis III
1.0K
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
The first classification is based on the development of the disease, and it includes the following categories:
1.0K

