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Table 1 Patient characteristics and PFT results in patients and volunteers

From: Lung MRI and impairment of diaphragmatic function in Pompe disease

 

Patients

Volunteers

P-value

Age (years)

46 (32-66)

43 (27-55)

0.25

Gender, (% males)

5 (50)

3 (50)

1.0

Height (cm)

178 (154-196)

177 (175-190)

0.39

Weight (kg)

73 (61-88)

85 (65-94)

0.13

BMI (kg/m2)

23.4 (20.6-25.4)

24.9 (21-25.7)

0.18

Duration of the disease (years)

16 (9-30)

-

-

Duration of ERT (years)

5.5 (0-7)

-

-

Wheelchair-dependent (%)

1 (10)

0 (0)

0.79

Ventilator-dependent (%)

3 (30)

0 (0)

0.37

Pulmonary function test

FVCsitting (%)

60 (45-84)

102 (92-111)

0.001

FVCsupine (%)

43 (27-70)

102 (87-113)

0.001

ΔFVC (%)a

33 (11-44)

0 (0-10)

0.001

FEV1sitting (l/s)

59 (42-80)

98 (85-117)

0.001

FEV1supine (l/s)

40 (30-63)

91 (76-112)

0.001

MIP (kPa)

6.9 (3.9-8.3)

8.6 (6.4-11.8)

0.07

MEP (kPa)

10.0 (6.4-11.8)

12.5 (10.3-14.2)

0.02

  1. Continuous variables are expressed as median and range, categorical variables as number and percentage. BMI = body mass index, ERT = enzyme replacement therapy, FVC = forced vital capacity, FEV1 = forced expiratory volume in one second, MIP = maximum static inspiratory pressure, MEP = maximum static expiratory pressure.
  2. aΔFVC is calculated as (FVCsitting-FVCsupine)/FVCsitting x 100%.