Research Article
Guy’s Stone Score (GSS) Based on Intravenous Pyelogram (IVP) Findings Predicting Upper Pole Access Percutaneous Nephrolithotomy (PCNL) Outcomes
Table 2
Outcomes of total upper pole access operations (
).
| | | GSS1 | GSS2 | GSS3 | GSS4 | value | | | | |
| | Number of access tracts, (%) | | | Mean (SD) | | | 1 | 31 (96.88) | 33 (94.29) | 61 (88.41) | 82 (90.11) | 0.48 | | >1 | 1 (3.13) | 2 (5.71) | 8 (11.54) | 9 (9.89) | | | Op. time (min) | | | mean (SD) | 48.21 (21.70) | 65.5 (23.80) | 68.91 (24.43) | 76.30 (33.44) | <0.01 | | Blood transfusion | | | mean (SD) | 1 (3.13) | 3 (8.57) | 4 (5.80) | 4 (4.40) | 0.76 | | Tubeless, (%) | 6 (18.75) | 7 (20.00) | 6 (8.70) | 5 (5.49) | 0.03 | | Immediate success | | | (%) | 28 (87.50) | 25 (71.43) | 37 (53.62) | 35 (38.46) | <0.01 | | Complications, (%) | | | Minor (Clavien 1-2) | 3 (9.37) | 14 (40.00) | 21 (30.43) | 25 (20.47) | <0.01 | | Major (Clavien 3–5) | 0 | 2 (5.70) | 7 (10.14) | 13 (16.48) | <0.01 | | Sepsis | 0 | 1 | 5 | 5 | | | Pulmonary complication | 0 | 1 | 1 | 5 | | Other | 0 | 0 | 1 | 3 | | Auxiliary treatment and | | | re-PCNL, (%) | 2 (6.25) | 1 (2.86) | 18 (25.99) | 38 (41.75) | 0.02 |
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