International guidelines indicate that the primary goals of asthma tre
atment are minimizing symptoms and preventing exacerbations. Symptoms
last for short periods of time (minutes or hours) and usually disappea
r either spontaneously or with the use of bronchodilator therapy. Exac
erbations last for 1 or more days and need more extensive bronchodilat
or therapy with the possible addition of a course of oral corticostero
ids. Particularly in children, because of their active life style, exe
rcise-induced symptoms may interfere with normal daily life, and noctu
rnal symptoms may cause severe sleep disturbance. Although the avoidan
ce of triggers that provoke symptoms and exacerbations is advocated in
the guidelines, this is not a practical option as it is extremely dif
ficult for asthmatic children to lead a normal life and yet avoid exer
cise. Long-term use of medication is therefore necessary to achieve th
e treatment goals. Inhaled corticosteroids have been shown to be the m
ost effective drugs for reducing asthma symptoms and exacerbations. Ho
wever, most children will not be free of symptoms during corticosteroi
d therapy and intermittent use of bronchodilator therapy is required.
Cessation of inhaled corticosteroid therapy, even after several years
of use, is likely to result in a reoccurrence of asthma symptoms. Long
-acting beta(2)-agonists, such as salmeterol and formoterol, are now a
vailable as additional therapy to inhaled corticosteroids in patients
who remain symptomatic despite at least a moderate dose of inhaled cor
ticosteroid. Two recent studies in adults revealed addition of salmete
rol superior to increasing inhaled corticosteroid dose. So far, no dat
a in children are available, but theoretically it might be attractive
to add a long-acting beta(2)-agonist to on-going therapy for children
who remain symptomatic, especially at nighttime, despite the use of in
haled corticosteroids. There is no place for the use of long-acting be
ta(2)-agonists as monotherapy in pediatric patients. (C) 1997 Wiley-Li
ss, Inc.