Lying down, breathing hard, sitting down, fine. Is it new pneumonia?

Lying dyspnea, sitting OK, not necessarily a new pneumonia infection, lying dyspnea and sitting up will improve the situation is the clinical manifestation of heart failure, clinically called orthopnea, some patients will also show nocturnal paroxysmal dyspnea, that is, lying down when sleep will suddenly show dyspnea, after sitting up will gradually ease. However, not all such cases are not new pneumonia. Patients with new pneumonia will also show heart failure. If they are mild patients, they will not show symptoms of lying dyspnea. In summary, lying dyspnea and sitting are not necessarily manifestations of new pneumonia. Relevant examinations, such as chest X-ray, chest CT, cardiac ultrasound, cardiac function, etc., need to be improved to clarify.