Discordance, Pendelluft, and Electrical Impedance Tomography.

Area of Science:

• Critical care medicine
• Respiratory physiology
• Medical imaging

Background:

• Pendelluft, or internal lung gas redistribution, was historically linked to high breathing rates.
• Recent advancements, particularly electrical impedance tomography (EIT), have improved understanding of intrapulmonary gas distribution.
• Effort-related pendelluft is increasingly recognized in mechanically ventilated patients.

Purpose of the Study:

• To review the pathophysiology of effort-related pendelluft.
• To discuss detection methods for pendelluft using EIT.
• To explore factors influencing pendelluft and its clinical outcome associations.

Main Methods:

• Literature review focusing on pathophysiology, detection, and clinical implications of pendelluft.
• Analysis of studies utilizing electrical impedance tomography (EIT) for visualizing intrapulmonary gas movement.
• Synthesis of evidence linking effort-related pendelluft to patient self-inflicted lung injury and clinical outcomes.

Main Results:

• Effort-related pendelluft is a common occurrence in mechanically ventilated patients.
• EIT is a key technology for identifying and understanding pendelluft.
• Emerging data suggest a correlation between pendelluft and adverse clinical outcomes, including lung injury.

Conclusions:

• Pendelluft is a significant factor in respiratory mechanics during mechanical ventilation.
• Further research is needed to fully elucidate the clinical impact of pendelluft.
• Understanding and managing pendelluft may improve patient outcomes in critical care settings.