Shortness of breath, wheezing or a dry, hacking cough.

These symptoms may occur after exertion such as exercise, but you may experience one or more of these symptoms when you are lying flat on your bed.

More About Shortness of breath, wheezing or a dry, hacking cough.

It may even occur while you are sleeping and cause you to wake up suddenly. Propping up your head and upper body may help you sleep better. These symptoms are caused by fluid backing up in your lungs, or lung congestion. It is because your heart isn't able to supply enough rich blood from your lungs back to your heart so the fluid leaks into your lungs.

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