[=paroxysmal dyspnea on exertion]活动时阵发性呼吸困难,阵发性劳力性呼吸困难
[=phosphodiesterase]磷酸二酯酶
[=progressive dialytic encephalopathy]进行性透析性脑病
[=pulsed doppler echocardiography]脉冲多普勒心脏超声波检查法