My 18 ýe old granddaughter has history of heart and lung problems. She has bèn çhexked out by both her cardiologist ànd pulmonary Dr s. Since early November, she has been passing out a lot. Today she passed out 8 times in the last 3 hours. Some were isolated, others were back to bac. Also complains of hard to breathe, nausea, feels hot, but skin is cold. Oxygen level is 92, heart rate is 89. She has copd, 2 cardiac stent, and 1 pig valve and 1 melody valve. What we want know is why she is passing out, what Dr she should see