Table 1 Basic parameters and stereologically acquired data on septal capillaries of the lung.

From: Three-dimensional characteristics of the alveolar capillary network in infant and adult human lungs

 

I1

I2

I3

I4

I5

A1

A2

A3

A4

A5

Age

26 d pp

30 d pp

16 mt pp

17 mt pp

18 mt pp

20 y

22 y

35 y

39 y

40 y

Sex

m

m

f

f

m

m

m

f

m

m

W, kg

3.04

4.1

8.8

10

12.5

72

96

76

85

70

V (lung), ml

142

192

480

504

714

3900

3800

4600

5950

3650

V (par,lung), ml

115

157

400

406

627

3510

3420

4140

5355

3285

NV (cap/par), x10−5 μm−3

3.112

4.552

2.825

6.2

3.282

5.354

3.779

3.755

2.248

2.528

N (cap,lung), x109

3.57

7.167

11.307

25.175

20.572

187.912

129.248

155.456

120.375

83.039

N (cap,lung) / W, x109/kg

1.174

1.748

1.285

2.517

1.646

2.610

1.346

2.045

1.416

1.186

N (cap,lung) / V (lung), x109/ml

0.025

0.037

0.024

0.05

0.029

0.048

0.034

0.034

0.020

0.023

SV (endo/par), μm−1

0.022

0.034

0.02

0.042

0.02

0.034

0.025

0.021

0.017

0.020

S (endo,lung), m2

2.497

5.375

8.136

17.099

12.494

119.752

87.024

88.550

88.469

64.566

S (endo,lung) / W, m2/kg

0.821

1.311

0.925

1.71

0.999

1.663

0.907

1.165

1.041

0.922

S (endo,lung) / V (lung), m2/ml

0.018

0.028

0.017

0.034

0.017

0.031

0.023

0.019

0.015

0.018

  1. W body mass, V (lung) lung volume, V (par,lung) parenchymal volume, NV (cap/lung) numerical density of septal capillary loops, N (cap,lung) number of septal capillary loops, SV (endo/lung) surface density of capillaries, S (endo,lung) capillary surface area, d days, mt months, y years, pp postpartum, m male, f female. Body mass, lung volume and parenchymal volume were taken from Zeltner et al.17 for the infant and from Gehr et al.18 for the adult lungs.
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