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Lung flooding--a new method for complete lung sonography

T Lesser1, S Klinzing, H Schubert

  • 1Department of Thoracic and Vascular Surgery, Friedrich Schiller University of Jena, Germany.

Research in Experimental Medicine. Zeitschrift Fur Die Gesamte Experimentelle Medizin Einschliesslich Experimenteller Chirurgie
|October 23, 1998
PubMed
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Lung sonography is now possible by flooding the lungs with electrolyte solution, enabling visualization of internal structures during surgery. This technique enhances surgical precision without adverse physiological effects.

Area of Science:

  • Medical Imaging
  • Thoracic Surgery
  • Pulmonary Medicine

Background:

  • Lung sonography is challenging due to sound reflection.
  • Direct palpation is limited during video-assisted thoracoscopic surgery (VATS).
  • Lung sonography could improve surgical assessment and guidance.

Purpose of the Study:

  • To investigate the feasibility of lung sonography after bronchoalveolar flooding.
  • To evaluate different liquid agents for lung flooding.
  • To assess the safety and efficacy of lung sonography in animal models.

Main Methods:

  • Animal experiments were conducted on pigs.
  • Bronchoalveolar flooding was performed using electrolyte solution or perfluorocarbon.
  • Ultrasound was applied transpleurally and endobronchially under atelectasis.

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  • Physiological parameters (arterial pressure, venous pressure, oxygen saturation) were monitored.

    • Main Results:

    • Lung flooding with electrolyte solution enabled complete sonography.
    • Intrapulmonary vessels, bronchi, and lymphatic nodes became visible.
    • Perfluorocarbon flooding resulted in sound absorption, hindering sonography.
    • Unilateral flooding did not cause significant physiological changes.

    Conclusions:

    • Lung sonography is feasible with bronchoalveolar flooding using electrolyte solution.
    • This technique enhances visualization of intrathoracic structures during VATS.
    • Lung flooding with electrolyte solution is a safe adjunct for thoracic procedures.