Reserva de flujo fraccionado en comparación con la guía de ultrasonido intravascular para optimizar el despliegue del

W F Fearon1, J Luna, H Samady

  • 1Stanford University Medical Center, Stanford, CA, USA. wfearon@stanford.edu

Circulation
|October 17, 2001
PubMed
Resumen

La reserva de flujo fraccionado (FFR) puede indicar un despliegue de stent subóptimo, pero un valor de 0,96 o más no garantiza un resultado óptimo. Las dosis más altas de adenosina mejoran la precisión de la FFR para evaluar el stenting coronario.

Videos de Conceptos Relacionados

Blood Flow01:29

Blood Flow

Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Veins as Blood Reservoirs01:10

Veins as Blood Reservoirs

Veins, while chiefly responsible for circulating blood back to the heart, also function as storage vessels for blood. They house approximately 64 percent of the body's total blood volume, a feat made possible by their high capacitance—the inherent ability to expand and accommodate large volumes of blood, even under low pressure. The large diameter and thin walls of veins augment their distensibility, significantly more so than arteries, due to their classification as capacitance vessels. When...