the periflux blood flow ( pbf ) response pattern in the fingertips determined with a periflux laser doppler flowmeter was analyzed in a standing test in which the subject was instructed to stand up from the sitting position and in valsalva 's maneuver in which respiration was held for 10 s at the maximum inspiration , and indicators such as reaction time ( rt ) , orthostatic dysreaction rate ( odr ) and pbf decreasing velocity ( pdv ) were established for determining autonomic abnormality .
C0035203
respiration
C0004048
inspiration