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Table 2 Operative Data Comparison

From: A comparison of supracostal and infracostal access approaches in treating renal and upper ureteral stones using MPCNL with the aid of a patented system

 

Infracostal Access

Supracostal Access

p value

Total number of percutaneous tracts (%)

47/43(109.3 %)

53/40(132.5 %)

0.005

Percutaneous tract (%)

Single tract

40/43(93.0 %)

29/40(72.5 %)

0.0165

Two tracts

2/43(4.7 %)

9/40(22.5 %)

0.0209

Three tracts

1/43(2.3 %)

2/40(5.0 %)

0.29

Average time needed for establishing a percutaneous tract (min)

(3 ± 1.6)min

(6 ± 3.9)min

0.001

Average time needed for stone clearance (min)

Renal stones

(42 ± 12)min

(61 ± 26)min

0.33

Ureteral stones

(10 ± 6)min

(11 ± 8)min

0.29

Renal stone clearance rate by one surgery using a single percutaneous tract

18/23(78.26 %)

7/20(35.0 %)

0.002

Stone clearance rate by one surgery

Renal stones

21/23(91.3 %)

18/20(90.0 %)

0.43

Ureteral stones

100 %

100 %

 

Renal stones needing secondary treatment (secondary MPCNL or ESWL) (%)

2/23(8.7 %)

2/20(10.0 %)

0.43

Mean amount of bleeding (ml)

72.8 ± 28.1

86.74 ± 32.6

0.040

Clavien Grade 1 complication

4(9 %)

4(10 %)

0.82

Clavien Grade 2 complication

0(0 %)

0(0 %)

0.001

Clavien Grade 3 complication

0(0 %)

2(5 %)

 

Clavien Grade 4 complication

0(0 %)

0(0 %)