Video Experimental Relacionado
Updated: Jul 15, 2026
04:37
Improved Home Blood Pressure Control by CT-guided Ozone-mediated Renal Denervation for Patients with Resistant Hypertension
Published on: June 6, 2025
La hiperinsulinemia y la angina de pecho microvascular ("síndrome X")
J D Dean1, C J Jones, S J Hutchison
1Department of Cardiology, University of Wales College of Medicine, Cardiff, UK.
Lancet (London, England)
|February 23, 1991
Resumen
Los pacientes con angina microvascular mostraron niveles más altos de insulina después de una carga de glucosa en comparación con los individuos sanos. Esto sugiere que el aumento de la insulina puede contribuir a la disfunción microvascular coronaria.
Área de la Ciencia:
- Cardiología Cardiología.
- Endocrinología Endocrinología.
- Investigación Metabólica de Investigación.
Sus antecedentes:
- La disfunción coronaria microvascular es una causa significativa de la angina de pecho.
- El papel de la insulina en la disfunción coronaria microvascular sigue sin estar claro.
Objetivo del estudio:
- Para investigar las respuestas de glucosa e insulina en pacientes con angina de pecho microvascular.
- Para comparar estas respuestas con las de sujetos sanos.
Principales métodos:
- Se estudiaron 11 pacientes con angina microvascular y 11 controles sanos.
- Ambos grupos recibieron una carga de glucosa.
- Se midieron los niveles de glucosa e insulina.
Principales resultados:
- Los pacientes con angina microvascular exhibieron hiperinsulinemia estimulada.
- Esta hiperinsulinemia fue significativamente mayor que en el grupo de control.
Conclusiones:
- El aumento de las concentraciones de insulina se asocia con la disfunción microvascular coronaria.
- La insulina puede desempeñar un papel en la fisiopatología de la angina microvascular.
Videos de Conceptos Relacionados
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...
01:30Angina I: Introduction
Definition and Symptoms: Angina (angina pectoris) is chest pain or discomfort caused by myocardial ischemia, which occurs when the heart muscle receives insufficient oxygen-rich blood. It typically manifests as pressing, squeezing, or crushing sensations in the chest and may radiate to the shoulders, arms, neck, jaw, or back.Primary Cause: In a healthy state, the coronary arteries can dilate (widen) to increase blood flow and meet the increased oxygen demand during physical activity or...
01:27Angina II: Classification
Angina, also known as angina pectoris, is a chest pain resulting from diminished blood flow to the heart muscle and is often a symptom of coronary artery disease. Angina presents several variants with distinctive attributes, etiologies, and therapeutic approaches. The main types of angina include stable, unstable, variant (Prinzmetal's), microvascular, intractable, and silent ischemia.Stable angina is caused by atherosclerosis, which leads to the formation of plaques that narrow the coronary...
01:29Angina III: Clinical Manifestations and Assessment
Angina manifests as chest pain, tightness, or squeezing discomfort typically located behind the breastbone. It can radiate to the neck, jaw, shoulders, and inner aspects of the upper arms, most commonly the left arm. Patients may experience shortness of breath, fatigue, profuse sweating, dizziness, indigestion, heartburn, palpitations, anxiety, and vomiting as accompanying symptoms. This pain often lasts a few minutes and is triggered by physical exertion, emotional stress, heavy meals, or cold...
01:26Heart Failure III: Clinical Manifestations
Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
01:25Peptic Ulcer Disease III: Clinical Manifestations and Complications
Duodenal UlcersDuodenal ulcers are the most common form of peptic ulcer disease, presenting with chronic, intermittent epigastric pain. Pain typically appears 2–3 hours after meals, especially when the stomach is empty, often waking patients at night. It is characteristically relieved by food or antacids (“pain–food–relief”). Some patients remain asymptomatic until complications like bleeding or perforation emerge, particularly with NSAID or anticoagulant use.Gastric UlcersGastric ulcers share...