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Related Concept Videos

Physiological Control of Respiration01:23

Physiological Control of Respiration

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Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
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Ventilatory Modes01:14

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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.
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Mechanical Ventilation III: Noninvasive Ventilation01:23

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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.
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Mechanical Ventilation II: Invasive Ventilation01:23

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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.
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Assessment of Ventilation I: Respiratory Rate01:20

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Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
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Respiratory Volumes and Capacities01:22

Respiratory Volumes and Capacities

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The respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide from the body. Respiratory volumes describe the volume of air in the lungs at different phases of the respiratory cycle. Tidal volume is the air breathed in and out during normal, quiet breathing. Inspiratory reserve volume is the air that can be forcefully inspired beyond the tidal volume. In contrast, expiratory reserve volume refers to the air that can be expelled from the lungs after a normal...
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Updated: Sep 28, 2025

Normothermic Negative Pressure Ventilation Ex Situ Lung Perfusion: Evaluation of Lung Function and Metabolism
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Pathophysiological Advantages of Spontaneous Ventilation.

Judit Lantos1, Tibor Németh2, Zsanett Barta2

  • 1Department of Neurology, Bács-Kiskun County Hospital, Kecskemet, Hungary.

Frontiers in Surgery
|April 1, 2022
PubMed
Summary

Non-intubated thoracic surgery (NITS) reduces surgical stress and inflammatory responses compared to mechanical ventilation. This approach improves immune function and patient outcomes by avoiding the negative effects of intubation and mechanical one-lung ventilation.

Keywords:
cytokinesimmune cellsinflammatory responsenon-intubatedone-lung ventilation

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Area of Science:

  • Thoracic Surgery
  • Anesthesiology
  • Immunology

Background:

  • Surgical stress triggers inflammatory responses and impairs immune function.
  • Video-assisted thoracoscopic surgery (VATS) is a minimally invasive approach.
  • Non-intubated thoracic surgery (NITS) aims to further minimize surgical stress.

Purpose of the Study:

  • Review the pathophysiology of NITS.
  • Evaluate NITS's potential to mitigate negative effects of mechanical one-lung ventilation (mOLV).
  • Compare immune responses between NITS and mOLV.

Main Methods:

  • Review of existing literature on NITS and mOLV.
  • Analysis of inflammatory and immune markers.
  • Comparison of physiological outcomes like oxygenation and cardiac output.

Main Results:

  • NITS prevents or reduces volutrauma, biotrauma, and immune responses associated with mOLV.
  • Lower pro-inflammatory and anti-inflammatory cytokine release in NITS.
  • More moderate changes in leukocyte and lymphocyte counts in NITS.
  • Improved ventilation/perfusion match, oxygenation, and cardiac output in NITS.
  • Reduced cytokine release with locoregional anesthesia in NITS.

Conclusions:

  • NITS offers a more physiological approach to thoracic surgery.
  • NITS reduces surgical stress and preserves immune function.
  • NITS improves postoperative immune function and patient outcomes compared to mOLV.