The mean time to onset of a 12% increase in FEV1 for PROVENTIL HFA Inhalation Aerosol was 7 minutes and the mean time to peak effect was approximately 50 minutes. The mean duration of effect as measured by a 12% increase in FEV1 was 2.3 hours. In some pediatric patients, duration of effect was as long as 6 hours.
The Aztecs, who probably originated as a nomadic tribe in northern Mexico, arrived in Mesoamerica around the beginning of the 13th century.
Aztec culture (/ËÃ¦ztÉk/), also known as Mexica culture, was a Mesoamerican culture that flourished in Central Mexico in the post-classic period from 1300-1521, during the time in which a triple alliance of the Mexica, Texcoca and Tepaneca tribes established the Aztec empire.