| | Study | Yr | | Transfusion rate % | Stone free rate % | Multiple tracts % | Tract size | Dilation methods | Factors associated with bleeding | Factors not associated with bleeding |
| | Armitage et al. [10] | 2012 | 1028 | 2.5 | 68 | 8 | NA | Ballon, telescopic, serial | NA | Access obtainer, dilation methods, nephrostomy tube | | Akman et al. [7] | 2011 | 649 | 10.8 | NA | 22.7 | 30F | Ballon | Number of accesses, stone type, diabetes, preoperative hemoglobin level, operative time | Age, sex, BMI, stone opacity, stone side, grade of hydronephrosis, previous surgery, hypertension, creatinine level, surgeon experience, intraoperative complications | | Yamaguchi et al. [5] | 2011 | 5537 | 5.8 | NA | NA | 18F-34F | Ballon, telescopic, serial | Sheath size, operating time, stone load, caseload. | NA | | Desai M et al. [11] | 2011 | 1466 (staghorn) | 9 | 56.9 | NA | NA | Balloon, serial | NA | NA | | | 3869 (nonstaghorn) | 4.5 | 82.5 | NA | NA | Balloon, serial | NA | NA | | Soucy F et al. [8] | 2009 | 509 | 0.8 | 78 | 16 | 30F | Balloon, serial | Dilation methods | Number of accesses | | Srivastava et al. [9] | 2005 | 1854 | 12.3 | NA | NA | 26F-30F | Serial | Stone size | Number of punctures, creatinine level |
|
|
