What Researchers Did
Researchers investigated how hyperbaric oxygen therapy affected the renin-angiotensin-aldosterone system in 54 elderly patients with chronic heart failure.
What They Found
The study found that hyperbaric oxygen therapy normalized plasma renin activity and lowered aldosterone levels in patients who initially had high levels. However, it had an insignificant effect on aldosterone concentration in most patients with first and second degree chronic heart failure.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
The study's findings are limited by its age, lack of specific hyperbaric oxygen therapy protocols, and the absence of a control group for comparison.