Hi there I understand your concern...it may be paroxysmal nocturnal dyspnea...The cause of these symptoms is a sudden build-up of fluid in the lungs. This is usually due to excessive strain on the left side of the heart and is a form of heart failure...you should take your mother to nearest cardiologist for clinical examination and evaluation they will guide you further.
Answered2016-07-10 05:54:04
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