It happens when there's a thickening in the pulmonary veins, making the right side of the heart work overtime, and causing what I call the reverse-Grinch effect.
这个疾病的诱因是 肺静脉增厚， 这使得右边的心脏 超负荷工作， 而且也引发了我称之为 反向-格林奇效应。