Amplatz versus Balloon for Tract Dilation in Ultrasonographically Guided Percutaneous Nephrolithotomy: A Randomized Clinical Trial
Table 3
Comparison of clinical outcomes in between Amplatz and balloon UPCN groups.
Variables
Amplatz (n=33)
Balloon (n=33)
P
Tract length, cm
7.92 ± 2.40
8.22 ± 1.95
0.57
Needle puncture time, minutes
6.11± 6.82
4.58±3.68
0.98
Tract dilation time, minutes
5.22±5.63
5.70±6.24
0.67
Total access time, minutes
11.33±8.84
10.27±7.15
0.59
Nephroscopy time, minutes
43.82±31.01
33.61±18.30
0.10
Overall operation time, minutes
80.61±21.28
65.91±20.60
0.02
The calyx accessed to
0.57
lower
16(48.5%)
18(54.5%)
Middle
7(21%)
9(27.3%)
upper
9(27.3%)
6(1.2%)
pelvis
1(3.3%)
0
Attempts for dilation
one
28(84.8%)
29(87.9%)
0.19
two
5(15.2)
2(6.1)
three
0(0.00)
2(6.1)
Short dilation
19(57.6)
12(36.4)
0.08
Number of accesses
1.00
single
31(93.9)
30(90.9)
Two or more
2(6.1)
3(9.1)
Exit Strategy
.89
Tubeless
15(45.5)
15(45.5)
Nephrostomy placement
5(15.2)
6(18.2)
Double-J insertion
12(36.4)
10(30.3)
Both Double-J and Nephrostomy
1(3.0)
2(6.1)
Early Stone Free Rate (SFR)
29(87.9)
24(72.7)
0.12
Hemoglobin drop (g/dl)
-1.76±1.49
-1.83±1.59
0.85
Renal function
0.79
stable
15(45.5)
14(42.4)
improved
14(42.4)
13(39.4)
deteriorated
4(12.1)
6(18.2)
Estimated GFR decrease (mL/min/1.73 m2)
20.3±7.0
20.6±5.3
0.97
Duration of hospitalization
2.39±1.47
1.97±0.91
0.30
Cost (USD)
603±85
718±78
0.0001
Mann-Whitney. Independent sample T-test. Fisher exact test. Before additional treatment including stones less than 4 mm. Chi-square test. In cases with deteriorated renal function. Data presented as frequency (column %) or mean ± SD.
