If orthopnea causes awakening during the night and is relieved by sitting, it is called paroxysmal nocturnal dyspnea.
如果端坐呼吸引起夜间觉醒，经坐起缓解，是为阵发性夜间呼吸困难。
英语百科
Cardiac asthma
Cardiac asthma is a medical diagnosis of wheezing, coughing or shortness of breath due to congestive heart failure. It is known as cardiac asthma because the symptoms mimic ordinary asthma. One study found that patients with cardiac asthma represented one third of congestive heart failure in elderly patients.