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Related Concept Videos

Assessment of Ventilation I: Respiratory Rate01:20

Assessment of Ventilation I: Respiratory Rate

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.
Critical Guidelines for Assessing Ventilation:
Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
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...
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)
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: Jul 15, 2026

Air-Inflation of Murine Lungs with Vascular Perfusion-Fixation
07:19

Air-Inflation of Murine Lungs with Vascular Perfusion-Fixation

Published on: February 2, 2021

Persistent air leaks in patients receiving mechanical ventilation.

R R Kempainen1, D J Pierson

  • 1Division of Pulmonary and Critical Care Medicine, University of Washington School of Medicine, Seattle, Washington 98104-2420, USA.

Seminars in Respiratory and Critical Care Medicine
|August 10, 2005
PubMed
Summary

Bronchopleural fistula (BPF) and parenchymal-pleural fistula (PPF) are distinct airway leaks. Differentiating these conditions is crucial for guiding appropriate management in mechanically ventilated patients.

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Area of Science:

  • Pulmonology
  • Thoracic Surgery
  • Critical Care Medicine

Background:

  • Persistent gas leakage into the pleural space presents a significant clinical challenge.
  • Distinguishing between central airway leaks (bronchopleural fistula, BPF) and peripheral leaks (parenchymal-pleural fistula, PPF) is critical, especially in mechanically ventilated patients.
  • These conditions have different pathogenetic mechanisms and natural histories, necessitating tailored management strategies.

Purpose of the Study:

  • To compare and contrast the evaluation and management of BPF and PPF in mechanically ventilated patients.
  • To provide an overview of nonsurgical interventions for persistent air leaks.
  • To highlight the prognostic significance of persistent leaks in this patient population.

Main Methods:

  • Literature review focusing on the diagnostic and therapeutic approaches for BPF and PPF.
  • Comparative analysis of BPF and PPF based on their location, etiology, and clinical presentation.
  • Summary of current nonsurgical management options, including endoscopic and medical therapies.

Main Results:

  • Bronchopleural fistula (BPF) involves central airway defects, while parenchymal-pleural fistula (PPF) originates from peripheral lung tissue.
  • Persistent air leaks in mechanically ventilated patients are associated with poor prognosis, underscoring the need for accurate diagnosis.
  • Nonsurgical interventions play a significant role in managing both BPF and PPF, offering alternatives to surgical repair.

Conclusions:

  • Accurate differentiation between BPF and PPF is essential for optimizing patient care and outcomes.
  • A comprehensive understanding of nonsurgical treatment modalities is vital for managing persistent air leaks.
  • Early and precise diagnosis, followed by appropriate management, can improve the prognosis for patients with these challenging conditions.