Table 2.
Patient demographics, medical and surgical history, and surgical outcomes (grouped according to R.E.N.A.L. nephrometry scores).
| Patient demographic | All patients for IRIS™ (n=31) | R.E.N.A.L. nephrometry score |
||
|---|---|---|---|---|
| 4–6 (n=8) | 7–9 (n=15) | 10–12 (n=8) | ||
| Age, year | ||||
| Mean±SD | 65.1±14.9 | 55.5±21.4 | 70.1±7.4 | 65.4±14.9 |
| Median (IQR) | 67.0 (57.0–74.0) | 57.0 (40.0–69.0) | 71.0 (63.0–74.0) | 66.5 (51.5–79.0) |
| Gender (male:female) | 20:11 | 6:2 | 9:6 | 5:3 |
| BMIa, kg/m2 | 30.6±6.5 | 27.7±3.3 | 32.1±7.7 | 30.9±6.0 |
| ASA classification, n (%) | ||||
| Class 1 | 2 (6.5) | 2 (25.0) | 0 (0) | 0 (0) |
| Class 2 | 12 (38.7) | 2 (25.0) | 7 (46.7) | 3 (37.5) |
| Class 3 | 17 (54.8) | 4 (50.0) | 8 (53.3) | 5 (62.5) |
| Class 4 | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Major abdominal surgery, n | 5 | 1 | 4 | 0 |
| Laterality (left:right) | 11:20 | 4:4 | 6:9 | 1:7 |
| Tumor location (anterior:hilar:posterior:other) | 11:10:9:1 | 5:0:3:0 | 5:4:5:1 | 1:6:1:0 |
| Tumor sizea, mm | 27.7±17.3 | 26.5±18.9 | 25.3±12.4 | 33.1±23.5 |
| Estimated hilar dissection timea, min | 12.5±8.5 | 12.5±8.5 | 11.7±9.0 | 25.0±20.6 |
| Estimated tumor resection timea, min | 8.6±4.5 | 6.9±2.8 | 7.6±4.4 | 12.3±4.2 |
| Estimated renorrhaphy timea, min | 12.8±7.3 | 10.3±3.9 | 14.7±13.7 | 16.5±8.5 |
| LOSa, day | 1.7±1.1 | 1.1±0.4 | 1.7±1.1 | 2.3±1.3 |
SD, standard deviation; IQR, interquartile range; BMI, body mass index; ASA, American Society of Anesthesiologists; LOS, length of stay.
a
Values are presented as mean±SD.