Table 2 Conjunctival hemodynamic descriptors in arterioles stratified by DR stage.

From: Assessment of Conjunctival Microvascular Hemodynamics in Stages of Diabetic Microvasculopathy

Hemodynamic Descriptor

C (N = 34)

NDR (N = 47)

NPDR (N = 45)

PDR (N = 35)

P-value*

D (μm)

 Mean ± SD

18 ± 5

19 ± 4

18 ± 4

18 ± 5

0.9

 [Min–Max]

[6–61]

[7–53]

[7–47]

[7–58]

 

V (mm/s)

 Mean ± SD

0.70 ± 0.23

0.54 ± 0.22

0.62 ± 0.24

0.64 ± 0.27

0.03

 [Min–Max]

[0.08–3.02]

[0.07–3.24]

[0.07–3.27]

[0.08–3.44]

 

Q (pl/s)

 Mean ± SD

144 ± 118

124 ± 98

135 ± 90

146 ± 115

0.8

 [Min–Max]

[5–1672]

[3–2306]

[4–1234]

[3–1566]

 

WSR (s−1)

 Mean ± SD

280 ± 115

193 ± 87

232 ± 109

245 ± 106

0.003

 [Min–Max]

[15–2288]

[18–1310]

[15–1365]

[24–1563]

 

WSS (dyne/cm2)

 Mean ± SD

8.6 ± 5.0

5.4 ± 3.2

6.2 ± 3.3

6.6 ± 3.7

0.003

 [Min–Max]

[0.03–3.2]

[0.03–6.3]

[0.03–5.0]

[0.04–6.0]

 

Arterioles sample size

 Mean ± SD

13 ± 8

12 ± 6

12 ± 5

10 ± 7

0.3

 [Min–Max]

[4–32]

[4–33]

[4–27]

[3–31]

 
  1. C, NDR, NPDR, and PDR are abbreviations for non-diabetic control, no clinically visible diabetic retinopathy, non-proliferative diabetic retinopathy, and proliferative diabetic retinopathy, respectively. D, V, Q, WSR, and WSS are abbreviations for diameter, axial blood velocity, blood flow, wall shear rate and wall shear stress, respectively. Bold indicates statistical significance. The ± symbol refers to standard deviation (SD).
  2. *P-value determined by ANOVA.
Back to article page