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Table 1 Characteristics of infants at the time of lung function test and findings of bronchial biopsy

From: Bronchoalveolar lavage in infants with recurrent lower respiratory symptoms

N

39

Age, years, median (range)

0.88 (0.28–1.94)

Sex, male

25 (64%)

Parental asthma

26 (41%)

Parental smoking

9 (23%)

Symptoms

 

  Age at first symptoms (y)

0.25 (0–1.33)

  Duration (y)

0.58 (0.17–1.33)

  Wheeze

23 (59%)

  Frequent wheeze*

15 (38%)

  Cough

26 (67%)

  Mucus

23 (59%)

  Dyspnea

5 (13%)

SPT+

15 (38%)

SPT + &/or eczema

24 (62%)

Lung function

 

  Abnormal

30 (77%)

  Abnormal with + ve BDR

12 (40%)

  sGaw, z-score

-2.4 (-5.2–0.9)

  FRC, z-score

0.37 (-1.5–1.9)

Bronchial biopsy findings

 

  RBM, μm

3.8 (2.7–6–0)

  Plasma cells/area

1.3 (0–13.8)

  Neutrophils/area

0.07 (0–0.88)

  Mast cells/area

0.39 (0–1.26)

  Lymphocytes/area

1.7 (0–16.9)

  Total cells/area

31.4 (16.9–138.9)

Dg at infancy

 

  Asthma

34 (87%)

  Structural abnormality

5 (13%)

  Unspecified

3 (8%)

  1. Lung function and bronchial biopsy findings are presented as medians (range).
  2. *Frequent wheeze, ≥ 3 times.
  3. SPT, skin prick test; BDR, bronchodilator response (sGaw >30%); sGaw, specific airway conductance; FRC, functional residual capacity; RBM, reticular basement membrane.