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Related Experiment Video

Updated: Dec 11, 2025

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
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A Newly Developed Chest Drainage Unit with an Integrated CO2 Detector.

Jens Eckardt1, Marike Lijkendijk1, Peter B Licht1

  • 1Department of Cardiothoracic Surgery, Odense University Hospital, Odense, Denmark.

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A new chest drainage unit with a CO2-sensitive indicator accurately identifies true postoperative air leaks in lung surgery patients. This innovation aids in safe chest tube removal, preventing complications and reinsertion needs.

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Area of Science:

  • Thoracic Surgery
  • Pulmonary Medicine
  • Medical Device Innovation

Background:

  • Postoperative air leakage is a common complication after lung surgery.
  • Air leaks can originate from lung parenchyma or the chest drainage system itself.
  • Distinguishing true air leaks from system-related issues is crucial for timely management.

Purpose of the Study:

  • To evaluate a novel chest drainage unit with an integrated CO2-sensitive color indicator.
  • To assess the unit's ability to differentiate true air leakage from false positives in clinical practice.
  • To determine the impact of this technology on chest tube management and patient outcomes.

Main Methods:

  • A prospective study involving 14 consecutive patients undergoing thoracic surgery (bilobectomies, VATS procedures).
  • Patients received general anesthesia with double-lumen intubation and a 24-Fr chest tube.
  • The chest tube was connected to a new drainage unit featuring a built-in CO2 detector.

Main Results:

  • The CO2-sensitive indicator showed a color change in all patients experiencing air leakage, confirming true air leakage.
  • One patient experienced prolonged air leakage.
  • No instances of pneumothorax, wound infections, or other complications were observed post-chest tube removal.

Conclusions:

  • The new chest drainage unit effectively and reliably confirmed true air leakage in all studied patients.
  • The device facilitated safe and appropriate timing for chest tube removal.
  • No chest tube reinsertion was required, demonstrating its utility in a broad range of thoracic surgery patients.