my 50 yo husband had multiple strokes in January. He has end stage copd, diabetes, pfo of heart, hypertension, multiple blood clots including pulmonary embolism. He is on lovanox 150 mg injections twice a day. He just spent another 19 days in hospital for high co2 and low oxygen levels. He is now on 7 liters full time oxygen. What are your thoughts. We are young and have never experienced this with any family members.