This will normalize once. treatment pressure is achieved. Depending upon the treatment pressure used for. your therapy, you might be instructed to peri-. odically breathe air from a facemask inside the. chamber. This provides an additional protection. against oxygen toxicity.
When to See a Doctor. If you have frequent bouts of chest pain, heart palpitations or irregular heartbeats, shortness of breath or fainting, you should see your doctor right away as sudden cardiac arrest requires emergency treatment. If these symptoms are ongoing, call 9-1-1 immediately.ââ.
HealthDay Reporter. MONDAY, Dec. 21, 2015 (HealthDay News) -- Sudden cardiac arrest may not be as sudden as doctors have thought, researchers report. Roughly half of cardiac arrest patients experience telltale warning signs that their heart is in danger of stopping in the month preceding their attack, new study findings suggest.