Hi Everyone: would anyone with symptoms like these plse advise. Lately, more breathless than usual. Do not suffer from asthma as far as I know. Breathless, as if there is no oxygen, plus labored breathing + constriction. Scary.... This happens at rest or minimal effort such as taking a shower or bath! Yesterday, acute attack. Went to the Hospital at A&E. Doc asked me to take a few steps whilst checking the oxygen level. It dropped within seconds of taking a few step. It dropped to <93%. If this happens after a few steps, then what happens when I try and move about a little such as perhaps making my bed? The duty doc suggested a pulmonary scan to see whether there is sufficient venous sufficiency. Has anyone had breathing difficulties with oxygen level dropping evidently. If so, what was the diagnosis? How did you cope? It is very disabling. I am at a loss....... Many thanks for replies. Best wishes. Kooky.