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Related Concept Videos

Respiratory Volumes01:15

Respiratory Volumes

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Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
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Physiological Control of Respiration01:23

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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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Pulmonary Ventilation: Inhalation01:24

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Pulmonary ventilation is a vital process that ensures the exchange of oxygen and carbon dioxide in the lungs. It refers to the movement of air into and out of the lungs, enabling the body to obtain oxygen and remove waste carbon dioxide. In this article, we will explore the intricacies of pulmonary ventilation, including its underlying principles, mechanisms, and the interplay of pressures within the respiratory system.
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Neural Control of Respiration01:18

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The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
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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.
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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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Related Experiment Video

Updated: Apr 3, 2026

Method of Isolated Ex Vivo Lung Perfusion in a Rat Model: Lessons Learned from Developing a Rat EVLP Program
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Respiratory control during independent lung ventilation.

T M Officer1, D R Wheeler, A E Frost

  • 1Pulmonary Section, Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA.

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This case study highlights how a transplanted lung and a native emphysematous lung can compete for thoracic space, affecting respiratory mechanics and requiring differential pressures for inflation.

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Area of Science:

  • Pulmonary Medicine
  • Thoracic Surgery
  • Respiratory Physiology

Background:

  • Lung transplantation is a life-saving procedure for end-stage lung disease.
  • Primary graft failure can occur post-transplantation, necessitating complex management.
  • Patients may retain native lung tissue with underlying pathology, such as emphysema.

Observation:

  • A lung transplant recipient presented with primary graft failure and a native emphysematous lung.
  • Asynchronous respiratory rates were observed between the denervated transplanted lung and the native lung.
  • Inflation of the native lung influenced the timing of subsequent inspiratory efforts from the transplanted lung.

Findings:

  • The denervated transplanted lung inflated independently of the native lung's respiratory cycle.
  • Synchronous inflation of both lungs necessitated higher pressures compared to isolated lung inflation near functional residual capacity.
  • This indicates a mechanical competition for space within the thoracic cavity between the two lungs.

Implications:

  • Understanding inter-lung mechanics is crucial in managing complex post-lung transplant scenarios.
  • The findings suggest that native lung tissue can mechanically influence allograft function.
  • Further research into thoracic space competition may inform surgical techniques and patient management strategies.