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Chronic Kidney Disease II: Clinical Manifestations01:24

Chronic Kidney Disease II: Clinical Manifestations

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Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
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Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

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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...
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Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

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Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
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Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

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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...
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Gastroesophageal Reflux Disease II: Clinical Features and Management01:29

Gastroesophageal Reflux Disease II: Clinical Features and Management

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Gastroesophageal reflux disease, or GERD, is a persistent medical condition that affects many individuals worldwide. Its clinical manifestations can vary greatly, making diagnosis and management challenging for healthcare professionals. The following is a comprehensive overview of the clinical manifestations, assessment, and management strategies for GERD.
Clinical Manifestations
GERD presents itself in a multitude of ways, with symptoms varying from person to person. The hallmark symptoms are...
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Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

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Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
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Video Experimental Relacionado

Updated: Jan 7, 2026

A Metadata Extraction Approach for Clinical Case Reports to Enable Advanced Understanding of Biomedical Concepts
07:50

A Metadata Extraction Approach for Clinical Case Reports to Enable Advanced Understanding of Biomedical Concepts

Published on: September 20, 2018

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Manifestaciones Clínicas

Nancy X Chen1, Sarah Tomaszewski Farias2, Alexander Ivan B Posis1

  • 1University of California, Davis, Davis, CA, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
Resumen
Este resumen es generado por máquina.

El deterioro cognitivo subjetivo en adultos mayores se asocia con una peor salud cerebral, incluida una menor volumen cerebral y un aumento de los marcadores de neurodegeneración y lesión cerebrovascular. Estos hallazgos enfatizan la importancia de monitorear los cambios cognitivos para la detección temprana de patologías cerebrales.

Palabras clave:
deterioro cognitivo subjetivosalud cerebralneurodegeneraciónlesión cerebrovascularcarga de amiloideadultos mayores

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Área de la Ciencia:

  • Neurociencia; Gerontología; Radiología

Sus antecedentes:

  • El deterioro cognitivo subjetivo (SCD) puede indicar una patología cerebral subyacente. Investigar las asociaciones del SCD con la neurodegeneración, la lesión cerebrovascular y la carga de amiloide es crucial para comprender el envejecimiento cognitivo.

Objetivo del estudio:

  • Examinar la relación entre el deterioro cognitivo subjetivo (SCD) y los marcadores neuroimagenológicos de la salud cerebral. Evaluar las asociaciones entre el SCD y los indicadores de neurodegeneración, lesión cerebrovascular y carga de amiloide en una cohorte diversa de adultos mayores.

Principales métodos:

  • Se utilizaron datos de cohortes étnica y racialmente diversas (KHANDLE, LA90, STAR) de 50 a 101 años. Se midió el SCD utilizando la escala Everyday Cognition (ECog) y se evaluó la salud cerebral mediante RM de 3T (volúmenes, integridad de la sustancia blanca) y PET de florbetapir (carga de amiloide). Se emplearon modelos de regresión lineal y logística, ajustando por variables demográficas y de cohorte.

Principales resultados:

  • Un mayor deterioro cognitivo subjetivo (peores puntuaciones ECog) se correlacionó con volúmenes cerebrales más pequeños (cerebro, hipocampo, corteza temporal) y volúmenes ventriculares más grandes. El aumento del deterioro cognitivo subjetivo se asoció con mayores hiperintensidades de la sustancia blanca, menor integridad de la sustancia blanca (menor anisotropía fraccional) y mayor carga de amiloide (SUVR, positividad de amiloide).

Conclusiones:

  • Un mayor deterioro cognitivo subjetivo se asocia significativamente con una peor salud cerebral en la vida tardía en una población diversa. Estos hallazgos subrayan la importancia clínica del SCD como un posible indicador temprano de neurodegeneración, lesión cerebrovascular y patología amiloide.