Thanks for writing to us.
A sudden onset shortness of breath
with no obvious signs in your lungs prompt the work-up for DVT and this has been done in your case. Since the initial work up for DVT is negative and probably CT (i hope it was Cat scan of chest) not only ruled out pulmonary embolism
but also major lung pathologies, the next major cause for shortness of breath is cardiac ailment. it requires assessment by a cardiologist and an ECHO (cardiac ultrasound
). Hence the approach seems to be standard.
At times the disease process may take some time to evolve and may not present in a typical fashion and you may get some surprises but it is always good to follow standards, especially when there are no definite clues.
i hope i cleared your doubts. feel free to discuss further.