A Study of Inhaled Fentanyl Aerosol in Chinese Patients With Malignant Tumors

The subjects will be randomly assigned (1:1) to either dosing sequence: in the first cycle, receive an intravenous bolus (5 seconds) of 25μg Fentanyl injection, after at least a 2-week washout period, in the second cycle, receive a single dose of 25μg Fentanyl aerosol inhaler through the Staccato delivery system; or receive the same treatment in the reverse order.

The subjects will be randomly assigned (1:1) to either dosing sequence: in the first cycle, receive an intravenous bolus (5 seconds) of 25μg fentanyl injection, after at least a 2-week washout period, in the second cycle, receive a single dose of 25μg fentanyl aerosol inhaler through the Staccato delivery system; or receive the same treatment in the reverse order.