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Related Concept Videos

Ventilatory Modes01:14

Ventilatory Modes

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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.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
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Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

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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.
Negative-Pressure Ventilators
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Mechanical Ventilation I: Indication and Settings01:29

Mechanical Ventilation I: Indication and Settings

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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...
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Mechanical Ventilation III: Noninvasive Ventilation01:23

Mechanical Ventilation III: Noninvasive Ventilation

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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...
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Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen01:16

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

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Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
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Cardiopulmonary Resuscitation II: ACLS Airway Management01:22

Cardiopulmonary Resuscitation II: ACLS Airway Management

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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...
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Updated: Mar 17, 2026

Use of an Integrated Low-Flow Anesthetic Vaporizer, Ventilator, and Physiological Monitoring System for Rodents
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Use of an Integrated Low-Flow Anesthetic Vaporizer, Ventilator, and Physiological Monitoring System for Rodents

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Aerosol delivery with two ventilation modes during mechanical ventilation: a randomized study.

Jonathan Dugernier1,2, Gregory Reychler3,4, Xavier Wittebole5

  • 1Soins Intensifs, Médecine Physique, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium. Jonathan.dugernier@uclouvain.be.

Annals of Intensive Care
|July 23, 2016
PubMed
Summary
This summary is machine-generated.

Volume-controlled ventilation improved nebulized aerosol lung deposition compared to pressure support ventilation in neurosurgery patients. Further studies are needed to determine the clinical benefits of this enhanced lung deposition.

Keywords:
Aerosol deliveryInvasive mechanical ventilationVentilation modeVibrating-mesh nebulizer

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Area of Science:

  • Critical Care Medicine
  • Respiratory Therapy
  • Medical Imaging

Background:

  • Optimizing lung deposition during nebulization is crucial for effective aerosol therapy.
  • Volume-controlled ventilation (VCV) has been proposed to enhance deposition, but spontaneous ventilation modes like pressure support ventilation (PSV) are preferred to prevent diaphragmatic dysfunction.
  • Direct comparisons of aerosol deposition between VCV and PSV are lacking.

Purpose of the Study:

  • To compare the topographic aerosol lung deposition during invasive mechanical ventilation using two modes: pressure support ventilation (PSV) and volume-controlled ventilation (VCV).
  • To evaluate the deposition patterns of radiolabeled aerosol administered via a vibrating-mesh nebulizer in postoperative neurosurgery patients.

Main Methods:

  • Seventeen postoperative neurosurgery patients without pulmonary disease were randomized to PSV or VCV.
  • A radiolabeled aerosol (technetium-99m diethylenetriaminepentaacetic acid) was administered using a vibrating-mesh nebulizer.
  • Pulmonary and extrapulmonary deposition were quantified using planar scintigraphy.

Main Results:

  • Lung deposition was significantly higher during VCV (15.1 ± 5.0%) compared to PSV (10.5 ± 3.0%).
  • Higher deposition occurred in the endotracheal tube and trachea during PSV (27.4 ± 6.6%) versus VCV (20.7 ± 6.0%).
  • Penetration index was similar for both lungs across ventilation modes, with high intersubject variability observed for all deposition parameters.

Conclusions:

  • Volume-controlled ventilation resulted in greater lung deposition of nebulized particles than pressure support ventilation in this patient cohort.
  • The clinical significance of this increased deposition with VCV requires further investigation.
  • NCT01879488