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Related Concept Videos

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

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

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
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Oxygen Delivering System III: Tracheostomy and T-piece01:23

Oxygen Delivering System III: Tracheostomy and T-piece

Oxygen delivery is critical in clinical care, especially for patients with respiratory disorders or those undergoing surgical procedures. Various systems, such as tracheostomy and the T-piece, deliver oxygen to the lungs, ensuring adequate arterial oxygenation.
Tracheostomy
A tracheostomy is a surgically created opening (stoma) in the anterior part of the trachea. It is used to establish a patient airway, bypass an upper airway obstruction, simplify the removal of secretions, permit long-term...
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.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Tracheostomy Suctioning II: Procedure01:23

Tracheostomy Suctioning II: Procedure

Tracheostomy suctioning is a vital nursing procedure that involves removing secretions from the tracheostomy tube to maintain airway patency and prevent respiratory complications. Nurses need to understand the proper technique for tracheostomy suctioning to ensure patient safety and comfort. In this guide, we will outline the step-by-step process for performing tracheostomy suctioning, including preparing the sterile field, donning personal protective equipment (PPE), lubricating and connecting...
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.
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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Related Experiment Video

Updated: Jun 21, 2026

Use of an Integrated Low-Flow Anesthetic Vaporizer, Ventilator, and Physiological Monitoring System for Rodents
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A microprocessor-controlled tracheal insufflation-assisted total liquid ventilation system.

James Courtney Parker1, Adel Sakla, Francis M Donovan

  • 1Department of Physiology, University of South Alabama, MSB 3074, Mobile, AL 36688, USA. jparker@usouthal.edu

Medical & Biological Engineering & Computing
|July 25, 2009
PubMed
Summary
This summary is machine-generated.

This study presents a novel liquid ventilator system using perfluorocarbon (PFC) for improved respiratory support. The system effectively maintained lung function and blood gases in piglets, even with simulated pulmonary edema.

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Area of Science:

  • Biomedical Engineering
  • Respiratory Physiology
  • Liquid Ventilation

Background:

  • Total liquid ventilation (TLV) offers potential benefits for severe respiratory failure.
  • Existing TLV systems face challenges in maintaining physiological parameters and efficient gas exchange.
  • Perfluorocarbon (PFC) liquids are suitable for liquid ventilation due to their high gas solubility and inertness.

Purpose of the Study:

  • To describe a prototype time-cycled, constant-volume, closed-circuit perfluorocarbon (PFC) total liquid ventilator system.
  • To evaluate the system's efficacy in maintaining functional residual capacity (FRC) and arterial blood gases.
  • To assess the impact of continuous perfusion (tracheal insufflation) on gas exchange and edema clearance.

Main Methods:

  • Development of a microcontroller-controlled liquid ventilator system with gear pumps and solenoid valves.
  • Implementation of feedback control using stop-flow pressures to maintain constant tidal volume and FRC.
  • Ventilation of normal and edematous piglets using Rimar 101 PFC over 2-3 hours.
  • Inclusion of a bias flow (tracheal insufflation) through a double-lumen endotracheal catheter.

Main Results:

  • The system successfully maintained constant tidal volume and FRC.
  • Stable FRC and arterial blood gases were achieved in piglets during 2-3 hour ventilation trials.
  • Tracheal insufflation significantly improved blood gases and enhanced clearance of instilled albumin solution in edematous piglets.

Conclusions:

  • The prototype PFC total liquid ventilator system is effective in maintaining respiratory parameters.
  • Continuous tracheal insufflation is a valuable adjunct for improving gas exchange and clearance during liquid ventilation, especially in edematous lungs.
  • This system shows promise for clinical applications in managing severe respiratory distress.