What Researchers Did
Researchers studied early symptoms and gas bubbles in the blood of 468 people exposed to simulated high altitude to understand pulmonary decompression sickness.
What They Found
Out of 2525 exposures to simulated altitude, 41% (1030) showed symptoms of decompression sickness, but only 29 had pulmonary symptoms. In these 29 cases, venous gas emboli (VGE) were present in 27 subjects, with severe VGE in 21. When diagnosed early, symptoms resolved completely in all 29 subjects, with 15 responding to recompression and oxygen, and 14 requiring immediate hyperbaric oxygen treatment.
What This Means for Canadian Patients
For Canadian patients experiencing pulmonary altitude decompression sickness, this study highlights the critical importance of early diagnosis. Prompt treatment, including recompression to ground level with oxygen or immediate hyperbaric oxygen therapy, was shown to be 100% effective in resolving symptoms. This suggests that quick medical attention can lead to full recovery from this rare condition.
Canadian Relevance
This study covers decompression sickness, which is a Health Canada-recognized indication for hyperbaric oxygen therapy.
Study Limitations
The study was conducted in a simulated altitude environment, and the number of subjects experiencing pulmonary symptoms was small, which may limit its real-world applicability.