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Related Concept Videos

Pneumothorax-I01:26

Pneumothorax-I

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A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
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Clinical Manifestations:
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Block Diagram Reduction01:22

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The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
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Related Experiment Video

Updated: Jan 31, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Acute right bundle branch block due to pneumothorax.

Manish Ruhela1, Gaurav Khandelwal1, Samiksha Gupta1

  • 1Department of Cardiology, AIIMS, Bhopal, Madhya Pradesh, India.

Journal of Family Medicine and Primary Care
|January 2, 2019
PubMed
Summary

This study reports the first case of complete right bundle branch block (RBBB) caused by left-sided pneumothorax in a young patient. ECG abnormalities resolved after pneumothorax decompression, highlighting pneumothorax as a cause of unusual ECG findings.

Keywords:
Electrocardiogrampneumothoraxright bundle branch block

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Area of Science:

  • Cardiology
  • Thoracic Medicine
  • Emergency Medicine

Background:

  • Electrocardiogram (ECG) changes associated with left-sided pneumothorax are documented, typically including right-axis deviation and diminished QRS complexes.
  • While incomplete right bundle branch block (RBBB) has been linked to left-sided pneumothorax, complete RBBB is exceedingly rare.

Observation:

  • A young patient experiencing acute-onset complete RBBB following blunt chest trauma from a motor vehicle accident was observed.
  • The patient was diagnosed with left-sided pneumothorax, which was identified as the cause of the complete RBBB.

Findings:

  • This case represents the first documented instance of acute-onset complete RBBB directly attributed to left-sided pneumothorax.
  • Following therapeutic decompression of the pneumothorax, the patient's ECG findings normalized within 1.5 hours.

Implications:

  • Pneumothorax should be considered in the differential diagnosis for patients presenting with new-onset complete RBBB, particularly after chest trauma.
  • Understanding the potential for pneumothorax to induce significant ECG abnormalities, such as complete RBBB, is crucial for timely diagnosis and management.