How does change in pulmonary blood pressure and capillary filtration cause rales

A research paper published in cardiovascular research journal stated that Increased filtration in capillary will increase fluid in lungs which can cause rales.

Reference:

Huang, Wenxin, et al. "Capillary filtration is reduced in lungs adapted to chronic heart failure: morphological and haemodynamic correlates." Cardiovascular research 49.1 (2001) : 207-217.