TABLE 2.
Operative factors and short‐term surgical results according to change in psoas muscle area
| Preoperative skeletal muscle no‐change (n = 45) | Preoperative skeletal muscle wasting (n = 44) | P‐value | |
|---|---|---|---|
| Type of hepatectomy a | 0.294 | ||
| S1, 4, 5, 6, 7, 8, n (%) | 1 (2) | 1 (2) | |
| S1, 5, 6, 7, 8, n (%) | 16 (36) | 19 (46) | |
| S1, 2, 3, 4, 5, 8, n (%) | 7 (16) | 6 (14) | |
| S1, 2, 3, 4, n (%) | 16 (36) | 13 (30) | |
| S1, 4, 5, 8/S1, 4, n (%) | 4 (9) | 5 (11) | |
| S1, 2, 5, 6, 7, 8, n (%) | 1 (2) | 0 (0) | |
| Combined pancreatoduodenectomy, n (%) | 4 (9) | 12 (27) | 0.024 |
| Combined vascular resection, n (%) | 22 (49) | 20 (46) | 0.746 |
| Portal vein resection, n (%) | 18 (40) | 16 (36) | 0.724 |
| Hepatic artery resection, n (%) | 10 (22) | 10 (23) | 0.954 |
| Portal vein and hepatic artery, n (%) | 6 (13) | 6 (14) | 0.967 |
| Operative time, min (IQR) | 669 (547–812) | 723 (574–874) | 0.862 |
| Intraoperative blood loss, ml (IQR) | 430 (235–772) | 595 (370–981) | 0.034 |
| Intraoperative red blood cell transfusion, n (%) | 16 (36) | 22 (50) | 0.168 |
| Preoperative hospital stays, d (IQR) | 24 (13–35) | 28 (21–42) | 0.177 |
| Postoperative hospital stays, d (IQR) | 28 (22–44) | 40 (26–51) | 0.018 |
| Major complications b , n (%) | 18 (40) | 25 (57) | 0.112 |
| Liver failure c , n (%) | 8 (18) | 14 (32) | 0.125 |
| Mortality d , n (%) | 0 (0) | 3 (7) | 0.117 |
Abbreviation: IQR, interquartile range.
a
According to Couinaud hepatic segment.
b
Grade III or higher according to the Clavien–Dindo classification.
c
Grade B or C according to the criteria of the International Study Group of Liver Surgery.
d
Including all deaths related to surgery.