چکیده (انگلیسی):

Background: Although right middle lobe (RML)-atelectasis of the lungs is a common complication of
asthma, the relevant data is limited. The aim of this study is to define the characteristics of RML atelectasis
in asthma during childhood.
Methods: Children with asthma who had recently developed RML atelectasis were included; antiinflammatory
medications, clarithromycin, and inhaled salbutamol were prescribed, chestphysiotherapy
(starting on the sixth day) was applied. Patients were reevaluated on the sixth, fourteenth,
thirtieth, and ninetieth days, chest X-rays were taken if the atelectasis had not resolved at the
time of the previous visit.
Results: Twenty-seven patients (6.8 (4.8e8.3) years, 48.1% male) with RML atelectasis were included.
Symptoms started 15 (7e30) days before admission. The thickness of the atelectasis was 11.8 ± 5.8 mm;
FEV1% was 75.9 ± 14.2 and Childhood Asthma Control Test scores were 11.8 ± 5.6 at the time of
admission. The atelectasis had been resolved by the sixth (n ¼ 3), fourteenth (n ¼ 9), thirtieth (n ¼ 10),
and ninetieth days (n ¼ 3). The treatment response of the patients whose atelectasis resolved in fourteen
days was better on the sixth-day (atelectasis thickness: 4.7 ± 1.7 vs. 11.9 ± 7.3 mm, p ¼ 0.021) compared
to those whose atelectasis resolved later. Nearly half (54.5%) of the patients whose atelectasis had
resolved by fourteen days were using controller medications at the time of admission. However, only two
patients (13.3%) were on controller treatment in the latter group (p ¼ 0.032). Regression analysis didn't
reveal any prognostic factors for the early resolution of atelectasis.
Conclusions: Early diagnosis and treatment of RML atelectasis prevents complications. Patients who had
early resolution of atelectasis had already been on anti-inflammatory medications, and responded better
to aggressive treatment within the first week.