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Related Concept Videos

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...
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)
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...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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 15, 2026

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
05:56

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

Electrical impedance tomography guided ventilation therapy.

Christian Putensen1, Hermann Wrigge, Jörg Zinserling

  • 1Department of Anaesthesiology and Intensive Care Medicine, University of Bonn, Germany. putensen@uni-bonn.de

Current Opinion in Critical Care
|May 1, 2007
PubMed
Summary

Electrical impedance tomography (EIT) reliably assesses regional lung ventilation at the bedside. This technique correlates well with CT scans and can improve gas exchange in critically ill patients.

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Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
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Area of Science:

  • Critical Care Medicine
  • Pulmonary Medicine
  • Biomedical Engineering

Background:

  • Computed tomography (CT) reveals heterogeneous gas distribution in acute respiratory distress syndrome (ARDS).
  • Current methods for regional ventilation assessment (isotope, MRI, CT) are not bedside-compatible.
  • Electrical impedance tomography (EIT) offers a novel bedside solution for regional ventilation monitoring.

Purpose of the Study:

  • To evaluate the reliability and potential clinical utility of EIT for assessing regional ventilation distribution.
  • To compare EIT-derived ventilation data with established imaging techniques like CT.

Main Methods:

  • Comparison of EIT with CT, electron beam CT, and single-photon emission CT in healthy lungs and induced lung injury models.
  • Correlation analysis between relative impedance changes in EIT images and regional lung air content changes from CT.
  • Clinical observation of EIT use in adjusting ventilator settings for patients with respiratory dysfunction.

Main Results:

  • EIT reliably determines regional ventilation in healthy lungs and various lung injury models.
  • EIT shows excellent correlation with CT in assessing regional air content changes.
  • Utilizing EIT to guide ventilator settings improved gas exchange and prevented alveolar collapse in a subset of patients.

Conclusions:

  • EIT is a reliable method for determining regional ventilation in critically ill patients.
  • EIT has significant potential as a valuable bedside tool for respiratory monitoring and management.