Sl number

Attempted

Failed

Successful

P value

1

Single lumen central venous catheter

73

10

63

NS

2

Triple lumen central venous cathteter

326

48

278

NS

3

Swan Ganz catheter.

120

31

89

0.03 *

4

Quadruple lumen central venous catheter

15

6

9

0.4

5

9.5 French sheath

11

3

8

0.01*

6

Dialysis catheter

17

10

7

0.03*

7

Pacing wire

1

0

1

 NS

Total number

563

152

411

NS