What Researchers Did
The researchers reviewed patient medical records and correspondence to identify cases of acute and chronic central nervous system oxygen toxicity during hyperbaric oxygen therapy for neurological conditions.
What They Found
The study identified 7 acute cases of central nervous system oxygen toxicity, occurring within 5 HBOT sessions at an average of 4.0 atmosphere-hours (AHs). They also found 52 chronic cases, with 31 occurring at 1.5 ATA (average 116 AHs), 12 at >1.5 ATA (103 AHs), and 9 at <1.5 ATA (114 AHs). Most of these oxygen toxicity cases were reversible, and there was no significant difference between adults and children.
What This Means for Canadian Patients
Canadian patients undergoing hyperbaric oxygen therapy for neurological conditions should be aware that central nervous system oxygen toxicity can occur even at pressures below 2.0 ATA. While most cases were reversible, patients and their healthcare providers should monitor for symptoms of oxygen toxicity, especially with repeated treatments. This information highlights the importance of individualized treatment plans and careful monitoring during HBOT.
Canadian Relevance
No direct Canadian connection identified. The study authors are not Canadian, and the research does not specifically cover Health Canada-recognized indications for HBOT.
Study Limitations
This study was a retrospective review of medical records and patient correspondence, which may be subject to reporting bias and lack standardized data collection.