What Researchers Did
Researchers investigated whether giving oxygen-rich water directly into the heart after a procedure for heart attack (PCI) could improve heart recovery compared to standard blood flow.
What They Found
Overall, the study found no significant difference in major heart events (5.2% in control vs. 6.7% in treatment group) or primary outcomes like infarct size or heart wall motion. However, a later analysis showed that patients with a specific type of heart attack (anterior AMI) treated within 6 hours with oxygen-rich water had better heart wall motion (0.75 vs. 0.54) and smaller infarct size (9% vs. 23% of the left ventricle).
Canadian Relevance
No direct Canadian connection identified. This study does not cover any Health Canada-recognised indications for hyperbaric oxygen therapy.
Study Limitations
The study's main findings did not show a benefit, and the positive results were observed only in a specific subgroup analysis after the initial study was completed.