ABSTRACT
Airway blood flow has (i) physiologic roles, including nourishment of the
mucosa, conditioning of inspired air, and anastomotic blood supply to the lung,
(ii) pathophysiological roles in airway inflammation and tissue repair after lung
transplantation, and (iii) therapeutic roles by regulating the clearance of inhaled
airway drugs. For the understanding of this circulation’s physiological and
clinical implications, the measurement of bronchial blood flow is crucial.
