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Tracheal size following tracheostomy with cuffed tracheostomy tubes: an experimental study
Thorax
|June 1, 1975
Summary
Low-pressure endotracheal tube cuffs showed minimal tracheal damage in dogs over two weeks. Radiological studies revealed temporary tracheal enlargement at the cuff site, suggesting potential muscle weakness.
Area of Science:
- Medical Devices
- Respiratory Medicine
- Veterinary Surgery
Background:
- Unyielding, low residual volume cuffs on intratracheal tubes can cause severe tracheal damage.
- Modifications to endotracheal tube cuffs aim to mitigate these adverse effects.
Purpose of the Study:
- To assess the efficacy of two low-pressure endotracheal tube cuffs in preventing tracheal damage.
- To evaluate the radiological changes in the trachea associated with prolonged intubation using these cuffs.
Main Methods:
- An experimental study was conducted on dogs using two types of low-pressure endotracheal tube cuffs.
- Continuous intubation was maintained for a two-week period.
- A modified technique for tantalum tracheobronchography was employed to visualize tracheal changes without causing further trauma.
Main Results:
- Both low-pressure cuffs demonstrated minimal visible damage to the tracheal wall after two weeks of intubation.
- Tantalum tracheobronchograms revealed a progressive, temporary increase in tracheal diameter at the cuff level during the intubation period.
Conclusions:
- Low-pressure endotracheal tube cuffs appear to reduce direct tracheal wall injury.
- The observed temporary tracheal enlargement suggests a potential for progressive weakening of the tracheal muscle, warranting further investigation into long-term implications.