Later in life, though, from years of increased pulmonary blood volume, patients might develop pulmonary hypertension, or higher pressures on the pulmonary side.

而在日后，由于数年的肺动脉血流量增加，患者可能患有肺动脉高压，即肺动脉的压力会高些。

This is because the expansion of the lungs causes pulmonary blood volume to increase and the blood flow from the lungs to the left atrium to decrease.

这是因为肺扩张导致肺血容量增加，而从肺部到左心房的血流减少。