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One of these won’t help if you have acute coronary syndrome - the medical term for a ‘heart attack’. Your best chance of survival is to call an ambulance and prompt paramedic care initially and they will make a determination on the best course of treatment - high flow oxygen is no longer recommended and in fact the evidence does indicate that this could cause poorer outcomes for the patient. I often question how many people we potentially harmed with oxygen when the had ACS and our clinical guidelines insisted on giving them as much oxygen as we could when I was working on road.
There are a range of oxygen concentrators available to buy or rent - there are also medical subsidy schemes to off set the costs so well worth looking into this aspect as well. It could be worth getting advice from a GP or respiratory specialist who is familiar with his case as not all may be a suitable choice.
Brian
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