Table 3 The SSI rate of different surgical classifications stratified by NNIS risk index
From: The characteristics of surgical site infection with class I incision in neurosurgery
Surgical classification | Total surgical cases (n (%)) | NNIS risk index | Crude infection rate (%) | Average risk index | NNIS risk index-adjusted SSI rate (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 1 | 2 | |||||||||||
Surgical cases | Infection cases | Infection rate (%) | Surgical cases | Infection cases | Infection rate (%) | Surgical cases | Infection cases | Infection rate (%) | |||||
Resection of space occupying lesions | 3746 (61.96) | 1289 | 16 | 1.24 | 2084 | 61 | 2.93 | 373 | 9 | 2.41 | 2.30 | 40.34 | 0.06 |
Skull/dural repair surgery | 370 (6.12) | 181 | 0 | 0.00 | 149 | 2 | 1.34 | 40 | 1 | 2.50 | 0.81 | 0.91 | 0.89 |
Electrical stimulation electrode replacement surgery | 273 (4.52) | 119 | 0 | 0.00 | 121 | 0 | 0.00 | 33 | 0 | 0.00 | 0.00 | 0.00 | / |
Craniotomy evacuation of hematoma | 269 (4.45) | 21 | 0 | 0.00 | 99 | 0 | 0.00 | 149 | 2 | 1.34 | 0.74 | 1.11 | 0.67 |
Arterial and venous embolization | 217 (3.59) | 104 | 0 | 0.00 | 92 | 3 | 3.26 | 21 | 2 | 9.52 | 2.30 | 1.47 | 1.57 |
Bone graft fusion and internal fixation surgery | 216 (3.57) | 81 | 0 | 0.00 | 119 | 1 | 0.84 | 16 | 0 | 0.00 | 0.46 | 0.55 | 0.84 |
Lumboperitoneal/ventricular -peritoneal shunt | 145 (2.40) | 83 | 1 | 1.20 | 58 | 2 | 3.45 | 4 | 0 | 0.00 | 2.07 | 1.37 | 1.51 |
Craniotomy/spinal canal decompression surgery | 143 (2.37) | 27 | 0 | 0.00 | 73 | 0 | 0.00 | 43 | 0 | 0.00 | 0.00 | 0.00 | / |
Intraventricular trepanation and drainage surgery | 133 (2.20) | 41 | 1 | 2.44 | 84 | 2 | 2.38 | 8 | 0 | 0.00 | 2.26 | 1.57 | 1.44 |
Endoscopy-assisted craniotomy evacuation of hematoma | 122 (2.02) | 11 | 0 | 0.00 | 77 | 0 | 0.00 | 34 | 0 | 0.00 | 0.00 | 0.00 | / |
Endoscopy-assisted craniotomy decompression surgery | 108 (1.79) | 53 | 0 | 0.00 | 51 | 0 | 0.00 | 4 | 0 | 0.00 | 0.00 | 0.00 | / |
Incarceration of aneurysm | 94 (1.55) | 9 | 0 | 0.00 | 46 | 5 | 10.87 | 39 | 4 | 10.26 | 9.57 | 4.11 | 2.33 |
Arterio-synagiosis surgery | 73 (1.21) | 20 | 0 | 0.00 | 34 | 0 | 0.00 | 19 | 0 | 0.00 | 0.00 | 0.00 | / |
Hybrid operation | 60 (0.99) | 5 | 0 | 0.00 | 38 | 6 | 15.79 | 17 | 1 | 5.88 | 11.67 | 4.08 | 2.86 |
Neurolysis surgery | 34 (0.56) | 19 | 0 | 0.00 | 14 | 0 | 0.00 | 1 | 0 | 0.00 | 0.00 | 0.00 | / |
Endoscopy-assisted resection of space occupying lesions | 26 (0.43) | 11 | 0 | 0.00 | 10 | 1 | 10.00 | 5 | 1 | 20.00 | 7.69 | 0.58 | 13.33 |
Internal fixation device implantation/removal surgery | 17 (0.28) | 13 | 0 | 0.00 | 4 | 0 | 0.00 | 0 | 0 | / | 0.00 | 0.00 | / |
In total | 6046 (100) | 2087 | 18 | 0.86 | 3153 | 83 | 2.63 | 806 | 20 | 2.48 | 2.00 | 52.16 | 0.04 |