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Videos de Conceptos Relacionados

Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
Flail Chest-II01:26

Flail Chest-II

Managing flail chest, a condition characterized by a segment of the chest wall moving independently from the rest of the thoracic cage, requires a comprehensive approach. It includes a thorough assessment of the patient's condition, a diagnostic evaluation to determine the extent of the injury, and the implementation of appropriate medical interventions tailored to the individual's needs.
Assessment:
1. Clinical Evaluation:
History:
Pneumothorax-I01:26

Pneumothorax-I

A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Pneumothorax-II01:27

Pneumothorax-II

Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
Cardiopulmonary Resuscitation II: ACLS Airway Management01:22

Cardiopulmonary Resuscitation II: ACLS Airway Management

Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned under...
Atelectasis II: Pathophysiology01:10

Atelectasis II: Pathophysiology

Atelectasis develops when alveoli lose their air and collapse inward. Because lung tissue is naturally elastic, these air sacs shrink rather than remaining open. Collapsed alveoli are no longer ventilated, reducing their role in gas exchange. Blood flow may continue in these regions, creating a ventilation–perfusion mismatch. Clinical findings include decreased breath sounds, dullness to percussion, reduced chest expansion, and decreased tactile fremitus as sound transmission through collapsed...

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Updated: Jul 6, 2026

Mouse Pneumonectomy Model of Compensatory Lung Growth
09:22

Mouse Pneumonectomy Model of Compensatory Lung Growth

Published on: December 17, 2014

La lesión pulmonar asociada con el ventilador.

Liao Pinhu1, Thomas Whitehead, Timothy Evans

  • 1Unit of Critical Care and National Heart and Lung Institute, London, UK.

Lancet (London, England)
|February 1, 2003
PubMed
Resumen

La ventilación mecánica apoya a los pacientes en estado crítico, pero puede causar lesiones pulmonares. Minimizar la lesión pulmonar asociada al ventilador (VALI) mejora la supervivencia en el síndrome de dificultad respiratoria aguda (ARDS).

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Área de la Ciencia:

  • Medicina de cuidados críticos Medicina de cuidados críticos.
  • La medicina pulmonar es una medicina para los pulmones.
  • Ingeniería biomédica de la ingeniería biomédica.

Sus antecedentes:

  • La ventilación mecánica es esencial para los pacientes con insuficiencia respiratoria.
  • Contiene riesgos como neumonía, problemas cardíacos y desafíos de sedación.
  • La presión positiva o negativa puede conducir a una lesión pulmonar asociada al ventilador (VALI).

Objetivo del estudio:

  • Para describir los efectos de la ventilación mecánica en los pulmones lesionados.
  • Para explorar los mecanismos subyacentes de la lesión pulmonar asociada al ventilador (VALI).
  • Para resaltar cómo la minimización de VALI mejora los resultados en el síndrome de dificultad respiratoria aguda (ARDS).

Principales métodos:

  • Revisión de la literatura existente sobre la ventilación mecánica y la lesión pulmonar.
  • Análisis de los efectos fisiológicos de la ventilación de presión positiva y negativa.
  • Discusión de los mecanismos que contribuyen a la lesión pulmonar asociada al ventilador (VALI).

Principales resultados:

  • La ventilación mecánica, aunque salva vidas, puede inducir o exacerbar la lesión pulmonar (VALI).
  • VALI es una preocupación significativa en pacientes con síndrome de dificultad respiratoria aguda (ARDS).
  • Las estrategias para minimizar el VALI son cruciales para mejorar la supervivencia del paciente.

Conclusiones:

  • Comprender los mecanismos de VALI es clave para optimizar la ventilación mecánica.
  • La reducción de la lesión pulmonar inducida por el ventilador puede mejorar significativamente los resultados de los pacientes en el SDRA.
  • Se justifica una mayor investigación sobre las estrategias de ventilación de protección pulmonar.