Related Experiment Videos
Prolonged partial liquid ventilation in spontaneously breathing awake animals.
P B Rich1, C A Reickert, S A Mahler
1Department of Surgery, The University of Michigan Hospitals, Ann Arbor, USA.
Critical Care Medicine
|June 11, 1999
Summary
This study developed a novel method for prolonged partial liquid ventilation (PLV) in awake animals. The technique allows for sustained perfluorocarbon delivery and is well-tolerated for 24 hours.
Area of Science:
- Pulmonary Medicine
- Anesthesiology
- Critical Care
Background:
- Partial liquid ventilation (PLV) studies have primarily focused on acute effects in anesthetized subjects.
- A need exists for models of prolonged PLV in awake, spontaneously breathing animals.
Purpose of the Study:
- To develop and validate a model for prolonged partial liquid ventilation (PLV) in awake, spontaneously breathing animals.
- To assess the feasibility and tolerance of sustained perfluorocarbon delivery via a novel intratracheal catheter technique.
Main Methods:
- A novel percutaneously assisted intratracheal catheterization technique was developed for prolonged PLV in rabbits.
- Animals recovered from anesthesia and underwent PLV with perflubron supplemented every 4 hours.
- Radiographic scoring assessed lung filling, and animals were monitored for 24 hours.
Main Results:
- The novel catheter technique allowed for percutaneous placement and externalization.
- Initial lung filling with perflubron was nearly complete, with sustained levels maintained for up to 4 hours.
- Radiographs confirmed continuous perfluorocarbon exposure over 24 hours, with equivalent lung volumes bilaterally.
- All animals tolerated the 24-hour procedure without adverse events.
Conclusions:
- Percutaneously assisted intratracheal cannulation enables prolonged PLV in awake, spontaneously breathing animals.
- This method provides reproducible, consistent, and well-tolerated perfluorocarbon exposure for 24 hours in uninjured animals.