Video Experimental Relacionado
Updated: Jun 28, 2026
07:35
Demonstrating a Multi-drug Resistant Mycobacterium tuberculosis Amplification Microarray
Published on: April 25, 2014
Tuberculosis extensamente resistente a los medicamentos en los Estados Unidos, 1993-2007
N Sarita Shah1, Robert Pratt, Lori Armstrong
1Division of Tuberculosis Elimination, Centers for Disease Control and Prevention, 1600 Clifton Rd, Mailstop E-10, Atlanta, GA 30333, USA.
JAMA
|November 13, 2008
Resumen
Los casos de tuberculosis extensamente resistente a los medicamentos (XDR-TB) en los Estados Unidos disminuyeron, pero siguen siendo una preocupación. Los pacientes con XDR-TB, particularmente aquellos con VIH, se enfrentaron a una mayor mortalidad y períodos infecciosos prolongados en comparación con la tuberculosis resistente a los medicamentos.
Área de la Ciencia:
- Salud Pública La salud pública.
- Enfermedades infecciosas Enfermedades infecciosas.
- Epidemiología La epidemiología.
Sus antecedentes:
- El aumento global de la tuberculosis extensamente resistente a los medicamentos (XDR-TB) presenta un desafío significativo para la salud pública debido a las opciones de tratamiento limitadas y altas tasas de mortalidad.
- Comprender la epidemiología y las características únicas de la XDR-TB es crucial para estrategias efectivas de control.
Objetivo del estudio:
- Para analizar la epidemiología de la XDR-TB en los Estados Unidos.
- Para comparar las características de los casos de XDR-TB con la tuberculosis multirresistente (MDR-TB) y los casos de tuberculosis susceptible a los medicamentos.
Principales métodos:
- Se realizó un análisis descriptivo de los casos de TB en los Estados Unidos reportados entre 1993 y 2007.
- La XDR-TB se definió por la resistencia a medicamentos específicos de primera y segunda línea, incluidos isoniazida, rifamicina, fluoroquinolona y inyectables clave de segunda línea (amikacina, kanamicina o capreomicina).
Principales resultados:
- En los Estados Unidos se reportaron 83 casos de XDR-TB entre 1993 y 2007, con una tendencia a la baja.
- Los casos de XDR-TB tenían más probabilidades de diseminar la enfermedad, tenían períodos infecciosos más largos (mediana de 183 días frente a 93 días para MDR-TB) y tasas de conversión de cultivos más bajas.
- La mortalidad fue significativamente mayor para los casos de TB-XDR (35% murieron) en comparación con la TB-MDR y la TB susceptible a medicamentos, especialmente entre los individuos VIH-positivos (81% de las muertes).
Conclusiones:
- A pesar de una disminución en los casos reportados, la XDR-TB continúa surgiendo en los Estados Unidos.
- La mejora de las medidas de control de la tuberculosis y el VIH / SIDA puede haber contribuido a la disminución observada en los casos de XDR-TB.
- La vigilancia continua y las intervenciones dirigidas son necesarias para gestionar eficazmente la XDR-TB.
Videos de Conceptos Relacionados
01:28Pulmonary Tuberculosis V
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 progression...
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 progression...
01:29Pulmonary Tuberculosis I
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...
01:26Pulmonary Tuberculosis IV
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
01:23Tuberculosis
Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...
01:31Pulmonary Tuberculosis III
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:
01:28Pulmonary Tuberculosis II
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...