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Related Concept Videos

Tracheostomy Decannulation01:21

Tracheostomy Decannulation

Tracheostomy decannulation is a significant milestone in the liberation of mechanically ventilated patients. Despite its importance, there is no universally accepted protocol for this procedure. This demands an evidence-based, individualized approach.
Description of the Procedure
Decannulation refers to the permanent removal of the tracheostomy tube, signaling the resolution of the condition that initially necessitated the tracheostomy. The process requires a well-coordinated interplay between...
Endotracheal Tube Extubation01:24

Endotracheal Tube Extubation

Endotracheal tube extubation is a critical procedure in weaning patients from mechanical ventilation. It involves physically removing the oral or nasal endotracheal (ET) tube, marking the final step in liberating a patient from ventilatory support.
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Mechanical Ventilation I: Indication and Settings01:29

Mechanical Ventilation I: Indication and Settings

Mechanical ventilation is a life-saving technique for managing acute respiratory failure and other respiratory complications. The process involves using a machine known as a ventilator to supply oxygen to the lungs and assist in removing carbon dioxide. It serves as a bridge to long-term mechanical ventilation or a temporary measure until ventilatory support is discontinued. The ventilator can maintain this function for a prolonged period, providing critical support for patients until they can...
Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
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Mechanical Ventilation III: Noninvasive Ventilation01:23

Mechanical Ventilation III: Noninvasive Ventilation

Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation (NIPPV)
Ventilatory Modes01:14

Ventilatory Modes

Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
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Related Experiment Video

Updated: Jul 20, 2026

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics
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Weaning from mechanical ventilatory support: refinement of a model

A Knebel1, M E Shekleton, S Burns

  • 1National Institutes of Health, Clinical Center Nursing Department, Bethesda, Md., USA.

American Journal of Critical Care : an Official Publication, American Association of Critical-Care Nurses
|March 24, 1998
PubMed
Summary

The American Association of Critical-Care Nurses refined its 1994 weaning model to improve mechanical ventilatory support science and clinical practice. This update guides critical care clinicians and researchers in ventilator weaning protocols.

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Last Updated: Jul 20, 2026

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Area of Science:

  • Critical care medicine
  • Respiratory therapy
  • Nursing science

Background:

  • The American Association of Critical-Care Nurses established a National Study Group to advance mechanical ventilatory support weaning.
  • A foundational weaning model was proposed in 1994 to structure scientific inquiry and clinical practice.
  • Continuous work by the study group has necessitated model refinement.

Purpose of the Study:

  • To communicate recent refinements to the established weaning model.
  • To inform critical care clinicians and researchers about updated frameworks for mechanical ventilation weaning.
  • To support the advancement of scientific understanding and clinical application in ventilator weaning.

Main Methods:

  • Review and synthesis of ongoing research and clinical data by the National Study Group.
  • Iterative refinement of the conceptual model for weaning from mechanical ventilatory support.
  • Dissemination of updated model components to the critical care community.

Main Results:

  • The 1994 weaning model has been updated based on new scientific evidence and clinical experience.
  • Refinements provide a more robust framework for understanding and managing the weaning process.
  • The updated model aims to enhance the effectiveness of clinical practice guidelines.

Conclusions:

  • The refined weaning model represents an evolution in the science of mechanical ventilatory support.
  • This updated framework is crucial for guiding current and future research in ventilator weaning.
  • Effective implementation of the refined model can improve patient outcomes in critical care settings.