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Primary Healthcare Services01:30

Primary Healthcare Services

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Primary care promotes wellness and prevents disease. This care includes health promotion, education, protection (such as immunizations), early disease screening, and environmental considerations. Settings providing this type of healthcare include physician offices, public health clinics, school nursing, and community health nursing.
In 1978, international leaders convened in Alma-Ata, Kazakhstan, for what would be a pivotal event in global health. The Alma-Ata Declaration was the first to call...
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Levels of Health Promotion and Illness Prevention01:26

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Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
In primary prevention, actions taken before disease onset prevent the disease from...
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Preventive Healthcare Services01:30

Preventive Healthcare Services

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Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
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Principles of Disease Surveillance01:26

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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Healthcare Agencies II01:17

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There are various healthcare agencies in the United States—some of which are managed by religious institutions and others by different government branches.
Parish nursing is a growing specialty nursing profession that focuses on holistic healthcare, health promotion, and illness prevention. It blends professional nursing practice with a health ministry, focusing on health and healing within the context of a Christian community. Parish nurses serve as health educators, referral sources,...
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Methods Of Healthcare Delivery System01:26

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At the different levels of the healthcare system, we see varying methods of healthcare used. These methods include managed care systems, case management, and primary healthcare.
Managed Care System:
The managed care system is designed to control the cost while maintaining the quality of care. The patient's care from admission to discharge is planned by the primary care provider or the case manager, also known as the gatekeeper. In a managed care system, the number of care providers is...
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Video Experimental Relacionado

Updated: Jan 8, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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Salud Pública

Poluri Manaswini1, Sajjad Shaik1, Debanjali Bhattacharya1

  • 1Amrita Vishwa Vidyapeetham, Bengaluru, Karnataka, India.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
PubMed
Resumen
Este resumen es generado por máquina.

El análisis de electroencefalografía (EEG) identificó alteraciones distintas en la potencia de las ondas cerebrales en pacientes con enfermedad de Alzheimer (EA) y demencia frontotemporal (DFT). Estos cambios localizados en la actividad neuronal sirven como biomarcadores potenciales para diferenciar estas afecciones neurodegenerativas.

Palabras clave:
ondas cerebralesbiomarcadores neuronalesenfermedad de Alzheimerdemencia frontotemporalelectroencefalografía

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Área de la Ciencia:

  • Neurociencia
  • Descubrimiento de biomarcadores
  • Investigación sobre el deterioro cognitivo

Sus antecedentes:

  • El análisis de señales de electroencefalografía (EEG) es crucial para comprender el deterioro cognitivo en trastornos neurodegenerativos como la enfermedad de Alzheimer (EA) y la demencia frontotemporal (DFT).
  • La identificación de biomarcadores neuronales es esencial para el diagnóstico temprano y el manejo eficaz de estas afecciones.
  • Se requiere una investigación detallada de las alteraciones específicas de la enfermedad en la actividad cerebral y las regiones afectadas.

Objetivo del estudio:

  • Identificar biomarcadores neuronales para la enfermedad de Alzheimer (EA) y la demencia frontotemporal (DFT).
  • Analizar de forma independiente los canales de EEG, la dinámica de las ondas cerebrales y las variaciones de potencia.
  • Proporcionar información sobre las alteraciones específicas de la enfermedad en la actividad cerebral y las regiones cerebrales afectadas.

Principales métodos:

  • Análisis de las variaciones de potencia en 19 canales de EEG utilizando el conjunto de datos OpenNeuro.
  • Pruebas t de muestras independientes para comparar las diferencias de potencia de banda entre sujetos con EA, DFT y controles sanos (HC).
  • Evaluación de las alteraciones de potencia específicas del canal en varias bandas de ondas cerebrales (alfa, beta, theta, delta, gamma).

Principales resultados:

  • Se observaron diferencias significativas en los patrones de ondas cerebrales y la potencia específica del canal entre los grupos EA, DFT y HC.
  • Se observó una reducción de la potencia de las ondas alfa en los canales posteriores (Pz, POz, O1) en pacientes con EA y DFT, lo que indica degeneración en las regiones cognitivas de orden superior.
  • Se encontraron alteraciones significativas en las ondas beta en los canales frontales y centrales, mientras que las ondas theta mostraron cambios en las regiones frontales y centrales, lo que concuerda con el deterioro cognitivo.

Conclusiones:

  • El análisis de EEG revela de manera efectiva cambios localizados en la actividad neuronal en regiones cerebrales específicas afectadas por la EA y la DFT.
  • La dinámica de las ondas cerebrales y las variaciones de potencia específicas del canal pueden servir como biomarcadores valiosos para distinguir las afecciones neurodegenerativas de la función cerebral saludable.
  • Este estudio destaca el potencial del EEG para identificar firmas neuronales específicas de la enfermedad para mejorar las capacidades de diagnóstico.