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Table 2 Effect of different parameters on the enhancement time after successful intradermal injections

From: Contrast-enhanced ultrasound: a new tool for imaging the superficial lymphatic vessels of the upper limb

 

Enhancement time (s)

Median (interquartile range)

Parameter

Number

Antecubital fossa

Axilla

Right

Left

Right

Left

Sex

Males

16

15 (10–31)

20 (13–25)

57 (31–120)

98 (52–133)

Females

14

19 (12–25)

12 (9–21)

81 (42–116)

49 (31–96)

p

 

0.455

0.029

0.583

0.070

Age (years)

< 40

18

18 (11–34)

19 (11–29)

77 (33–123)

92 (49–147)

> 40

12

18 (11–25)

15 (12–24)

77 (32–109)

50 (37–95)

p

 

0.929

0.484

0.825

0.086

Body mass index

< 25

16

19 (13–33)

17 (11–23)

80 (40–123)

69 (39–133)

> 25

14

14 (11–25)

14 (12–35)

57 (28–99)

63 (44–112)

p

 

0.256

0.546

0.111

0.884

  

Right+ left

 

Enhancement type

A

15 + 19 = 34

12 (9–20)

13 (10–19)

36 (29–49)

50 (32–70)

B

14 + 11 = 25

25 (18–46)

25 (20–34)

118 (88–134)

126 (95–191)

p

 

0.001

0.007

0.000

0.000

  1. Enhancement type A indicates a successful intradermal injection with strong visual enhancement, whereas type B refers to a partially successful injection with moderate enhancement. Enhancement times in the table represent median enhancement times at the antecubital fossa and axilla