The basic scales of western music during the Middle Ages. The church modes are. A. different from the major and minor scales in that they consist of only six different tones. B. different from the major and minor scales in that they consist of only five different tones.
Levalbuterol tartrate (Xopenex hFa) is a beta2-agonist, hydrofluoroalkane inhalation aerosol labeled for the treatment or prevention of bronchospasm in patients with reversible obstructive airway disease. Levalbuterol is the active R-isomer of albuterol (Proventil), which contains both the R- and S-isomers.
Results from clinical trials in adults show levalbuterol tartrate to be as effective as albuterol in improving lung function as measured by percent change in forced expiratory volume in one second (FEV1).1,2 The duration of action is approximately four hours in most persons and is similar to that of albuterol.