Video Experimental Relacionado
Updated: Jul 30, 2026
08:42
Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
Published on: October 22, 2014
Variaciones geográficas en la viscosidad plasmática y relación con las tasas de eventos coronarios
1Department of Internal Medicine II, Ulm University Medical Centre, Germany.
Lancet (London, England)
|September 10, 1994
Resumen
La mayor viscosidad plasmática en Escocia en comparación con Augsburgo, Alemania, puede explicar en parte el mayor riesgo de enfermedad coronaria (CHD) y accidente cerebrovascular en Escocia. Este hallazgo destaca la viscosidad plasmática como un factor potencial en las disparidades de las enfermedades cardiovasculares.
Área de la Ciencia:
- Ciencias Cardiovasculares Ciencias Cardiovasculares
- Epidemiología La epidemiología.
- Investigación biomédica en la investigación biomédica.
Sus antecedentes:
- La viscosidad plasmática es un predictor conocido de la enfermedad coronaria (CHD) y el accidente cerebrovascular.
- Las variaciones geográficas en las tasas de eventos de ECC sugieren factores de riesgo subyacentes específicos de la población.
Objetivo del estudio:
- Investigar la correlación entre las diferencias regionales en las tasas de eventos de ECC y la viscosidad plasmática.
- Para comparar los niveles de viscosidad plasmática en una zona de alto riesgo de ECC (Escocia) frente a una zona de menor riesgo (Augsburgo, Alemania).
Principales métodos:
- Las encuestas transversales de la población se llevaron a cabo en Glasgow (MONICA y el Estudio Escocés de Salud Cardiaca) y Augsburgo (MONICA).
- La viscosidad plasmática se midió en hombres y mujeres de 25 a 64 años.
- El análisis estadístico involucró la comparación de la viscosidad plasmática media, con ajustes para los factores de riesgo cardiovascular.
Principales resultados:
- La viscosidad plasmática media fue significativamente mayor en el oeste de Escocia (1.327 mPa s para hombres, 1.318 mPa s para mujeres) en comparación con Augsburgo (1.261 mPa s para hombres, 1.248 mPa s para mujeres).
- Estas diferencias persistieron después de ajustar por edad, tabaquismo, niveles de colesterol, presión arterial e índice de masa corporal.
- Las tasas de eventos coronarios estandarizados por edad fueron sustancialmente más altas en Glasgow que en Augsburgo tanto para hombres como para mujeres.
Conclusiones:
- La diferencia geográfica observada en la viscosidad plasmática puede contribuir a las disparidades en las tasas de eventos de ECC entre Escocia y Augsburgo.
- Se necesita más investigación para explorar los determinantes de la viscosidad plasmática y su papel en la aterosclerosis, la trombosis y la isquemia.
Más Videos Relacionados
13:07Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
Published on: January 15, 2022
06:18Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
Published on: December 6, 2024
Videos de Conceptos Relacionados
01:17Viscosity
When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. This property of fluids is called fluid viscosity. In this example, water has a lower viscosity than honey and maple syrup.
The SI unit of viscosity is...
The SI unit of viscosity is...
01:20Vascular Resistance
Vascular resistance is a critical concept in understanding blood flow dynamics in the circulatory system. It refers to the resistance that blood encounters as it flows through the blood vessels. This resistance is a key factor in determining blood pressure and cardiac workload.
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
01:27Viscosity
Viscosity is a property of fluids that measures their resistance to flow. It is influenced by factors such as the surface area of contact, the gradient of flow speed, and the fluid's viscosity constant, called the coefficient of viscosity. The coefficient of viscosity, also known as dynamic viscosity, is denoted by the symbol η. It determines the proportionality between the viscous force and the gradient of flow speed.Newton's law of viscosity states that the viscous force on a faster-moving...
01:30Coronary Artery Disease I: Introduction
Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
01:26Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
01:30Coronary Artery Disease III: Clinical Manifestations
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...