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Abstract:
We evaluated the McSwain Dart on a "worst case" basis. Dogs were sedated with 30 mg/kg pentobarbital, intubated, and placed on 15 cm H2O positive end-expiratory pressure. Percutaneous introduction of the McSwain Dart was not possible without parenchymal damage to the lung in over 20 attempts under these conditions. The McSwain Dart should be used only when the diagnosis of pneumothorax is without doubt.
Insights
The McSwain Dart device could not be inserted without lung damage in over 20 attempts on sedated dogs. This study suggests the McSwain Dart is only suitable for confirmed pneumothorax cases.
Area of Science:
- Veterinary Medicine
- Surgical Devices
- Respiratory Physiology
Background:
- The McSwain Dart is a device used for treating pneumothorax.
- Evaluating novel surgical instruments requires rigorous testing under challenging conditions.
Purpose of the Study:
- To assess the safety and efficacy of the McSwain Dart in a simulated worst-case scenario.
- To determine the feasibility of percutaneous introduction without causing lung parenchymal damage.
Main Methods:
- Canine subjects were utilized for the study.
- Anesthesia was induced using pentobarbital (30 mg/kg).
- Mechanical ventilation was applied with positive end-expiratory pressure (15 cm H2O).
Main Results:
- Percutaneous introduction of the McSwain Dart proved impossible in over 20 attempts.
- Significant parenchymal damage to the lung occurred during insertion attempts.
- The device's usability was compromised under the tested "worst case" conditions.
Conclusions:
- The McSwain Dart is associated with a high risk of lung injury.
- Its application should be restricted to situations where pneumothorax diagnosis is certain.
- Further refinement of the McSwain Dart may be necessary for broader clinical use.