Evaluating Stable Chronic Obstructive Pulmonary Disease by Ultrasound

Table 2

Pulmonary function test values and significance levels with ultrasonographic findings according to the COPD stage and control group.

	Control group (n = 40)	GOLD A (n = 6)	GOLD B (n = 6)	GOLD C (n = 15)	GOLD D (n = 34)	value
Lung Sil R (mm), median (IQR)	66.0 (4.5)	48.8 (3.1)	44.1 (9.5)	41.0 (9.6)	27.6 (15.1)	<0.001
Lung Sil L (mm), median (IQR)	66.1 (4.0)	48.8 (4.4)	44.3 (8.9)	40.7 (9.1)	27.7 (12.1)	<0.001
Ant B-Mode R (mm), median (IQR)	71 (5.0)	53.2 (3.8)	45.5 (8.2)	42.2 (8.5)	34.0 (13.0)	<0.001
Ant M-mode R (mm), median (IQR)	69.0 (3.8)	45 (4.0)	44 (5.0)	43 (9.0)	34 (7.0)	<0.001
Ant M-mode L (mm), median (IQR)	70 (6.0)	46 (3.0)	45 (5.0)	42 (7.0)	34 (6.0)	<0.001
FVC (%), median (IQR)	98.5 (20)	92.5 (7)	72.0 (18.0)	67.0 (17.0)	55.0 (29.0)	<0.001
FEV1 (%), median (IQR)	94.0 (19)	72.0 (8.0)	59.5 (14.0)	54.0 (18.0)	34.5 (19.0)	<0.001
FEV1/FVC (%), median (IQR)	91.0 (9)	66.5 (2.0)	63. (6.0)	63.0 (13.0)	47.5 (18.0)	<0.001

COPD: chronic obstructive pulmonary disease; GOLD: Global Initiative for Chronic Obstructive Lung Disease; IQR: interquartile range; FVC: forced vital capacity; FEV1: forced expiratory volume in 1 s.