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Videos de Conceptos Relacionados

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

3.4K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
3.4K
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

829
Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
829
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

855
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
855
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

935
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
935
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

267
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
267
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

313
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
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Video Experimental Relacionado

Updated: Jan 27, 2026

Author Spotlight: Investigating HR-Dependent Cardiac Function in Mouse Models Through a Novel Atrial-Pacing Approach
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Author Spotlight: Investigating HR-Dependent Cardiac Function in Mouse Models Through a Novel Atrial-Pacing Approach

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Imágenes multimodales en la insuficiencia cardíaca isquémica

Jeroen J Bax1, Marcelo Di Carli2, Jagat Narula3

  • 1Department of Cardiology, Leiden University Medical Center, Leiden, Netherlands.

Lancet (London, England)
|March 13, 2019
PubMed
Resumen

La imagen no invasiva moderna es crucial para evaluar las causas de la insuficiencia cardíaca, guiar el pronóstico y determinar terapias como la revascularización o la reparación de la válvula. Esta evaluación ayuda a seleccionar los tratamientos óptimos más allá de la medicación.

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Gene Transfer for Ischemic Heart Failure in a Preclinical Model
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Área de la Ciencia:

  • Cardiología
  • Imágenes médicas

Sus antecedentes:

  • La insuficiencia cardíaca requiere una evaluación exhaustiva de sus causas, fisiopatología y hemodinámica.
  • Las modalidades modernas de imagen no invasiva son esenciales para evaluar la estructura y la función cardíaca.

Objetivo del estudio:

  • Describir un enfoque sistemático para evaluar la insuficiencia cardíaca utilizando imágenes no invasivas.
  • Para resaltar cómo las imágenes guían las decisiones terapéuticas más allá de la terapia médica optimizada.

Principales métodos:

  • Evaluación gradual del tamaño y la función del ventrículo izquierdo.
  • Evaluación de la enfermedad de la arteria coronaria, regurgitación mitral, hipertensión pulmonar y función del ventrículo derecho.
  • Evaluación de la regurgitación tricúspide.

Principales resultados:

  • Las imágenes no invasivas proporcionan datos críticos para el pronóstico y la planificación terapéutica.
  • Los hallazgos de imágenes pueden guiar las decisiones sobre revascularización, implantación de desfibrilador y reparación / reemplazo de válvulas.
  • La evidencia de ensayos controlados aleatorios que guían la terapia con imágenes no invasivas es limitada.

Conclusiones:

  • Una estrategia integral de imágenes no invasivas es vital para el manejo de pacientes con insuficiencia cardíaca.
  • Las imágenes juegan un papel clave en la personalización de las estrategias de tratamiento para la insuficiencia cardíaca.
  • Se necesita más investigación para fortalecer la base de evidencia de las terapias guiadas por imágenes en la insuficiencia cardíaca.