Retrospective Study
Copyright ©The Author(s) 2025.
World J Gastrointest Surg. Mar 27, 2025; 17(3): 100999
Published online Mar 27, 2025. doi: 10.4240/wjgs.v17.i3.100999
Table 1 Comparison of the general patient characteristics among the three groups, n (%)
Characteristic
OPD (n = 511)
LPD (n = 982)
CTOPD (n = 229)
P value
Sex
Male312 (61.1)616 (62.7)155 (67.7)0.223
Female199 (38.9)366 (37.3)74 (32.3)-
Age (years), interquartile range61 (54.0-67.0)61 (53.0-67.0)61 (52.0-69.0)0.992
BMI (kg/m2), interquartile range23.83 (21.48-26.03)23.69 (21.77-25.95)23.68 (21.62-26.22)0.997
History of abdominal surgery
Yes83 (16.2)135 (13.7)33 (14.4)0.430
No428 (83.8)847 (86.3)296 (85.6)-
History of diabetes
Yes98 (19.2)166 (16.9)38 (16.6)0.506
No413 (80.8)816 (83.1)191 (83.4)-
Preoperative alkaline phosphatase (U/L), interquartile range301.0 (126.0-516.0)283.5 (119.75-510.25)246.0 (97.0-459.5)0.079
Preoperative glutamyl transpeptidase (U/L), interquartile range336.0 (84.0-801.0)372.0 (78.5-806.5)267.0 (45.0-716.0)0.132
Preoperative Hb (g/L), interquartile range127.0 (115.0-138.0)126.0 (114.0-136.0)125.0 (114.0-139.0)0.696
Preoperative albumin (g/L), interquartile range38.7 (35.4-41.7)38.5 (35.5-41,4)38.2 (34.8-41.2)0.482
ASA classification
I2 (0.4)3 (0.3)0 (0)0.905
II358 (70.1)701 (71.4)160 (69.9)-
III147 (28.8)274 (27.9)68 (29.7)-
IV4 (0.8)4 (0.4)1 (0.4)-
Preoperative total bilirubin (μmol/L), interquartile range82.57 (17.65-197.68)73.25 (17.97-204.36)60.07 (14.91-204.55)0.441
Table 2 Comparison of mortality rates among the three groups, n (%)
Characteristic
OPD (n = 511)
LPD (n = 982)
CTOPD (n = 229)
P value
Perioperative death
Yes4 (0.8)13 (1.3)2 (0.9)0.598
No507 (99.2)969 (98.7)227 (99.1)-
Table 3 Comparison of estimated blood loss and delta hemoglobin among the three groups
Blood loss
OPD (n = 511)
LPD (n = 982)
CTOPD (n = 229)
P value
EBL (mL), interquartile range200.0 (50.0-300.0)50.0 (50.0-200.0)200.0 (50.0-400.0)< 0.001
IΔHb (g/L), interquartile range22.00 (12.00-6.00)21.00 (10.00-33.00)33.00 (18.12-52.24)< 0.001
PΔHb (g/L), interquartile range25.87 (13.51-42.00)25.00 (14.00-45.00)37.48 (21.64-59.65)< 0.001
Table 4 Correlation analysis between intraoperative delta hemoglobin and estimated blood loss
Classification
Spearman correlation coefficient
P value
IΔHb (g/L)--
EBL (mL)0.337< 0.001
Table 5 Comparison of intraoperative delta hemoglobin and perioperative delta hemoglobin
Classification
ΔHb (g/L)
Z value
P value
IΔHb, interquartile range22.00 (11.00-36.00)--
PΔHb, interquartile range27.00 (14.00-45.49)-10.729< 0.001
Table 6 Univariate regression analysis of intraoperative delta hemoglobin
Parameter
B value
95%CI
P value
Age ≥ 65 years0.236-2.429-2.9010.862
History of diabetes0.724-2.658-4.1070.674
History of abdominal surgery-1.076-4.721-2.5690.563
Preoperative biliary drainage-2.606-5.948-0.7350.126
ASA classification IV19.2361.420-37.0520.034
BMI > 24 kg/m22.6050.031-5.1790.047
Malignant tumor-0.717-4.380-2.9460.701
Preoperative albumin < 35 g/L1.834-1.288-4.9550.249
Pancreatic tumor1.737-0.973-4.4470.209
Pancreatic carcinoma2.041-0.851-4.9330.166
Ampulla of Vater carcinoma-0.921-5.055-3.2140.662
Preoperative total bilirubin > 200 μmol/L5.8002.861-8.738< 0.001
Table 7 Multivariate regression analysis of intraoperative delta hemoglobin
Parameter
B value
95%CI
P value
ASA classification IV20.0712.330-37.8110.049
BMI > 24 kg/m22.5760.013-5.1400.078
Preoperative total bilirubin > 200 μmol/L5.7392.805-8.673< 0.001
Table 8 Univariate regression analysis of perioperative delta hemoglobin
Parameter
B value
95%CI
P value
Age ≥ 65 years-0.293-4.804-4.2190.899
History of diabetes-3.663-9.385-2.0600.210
History of abdominal surgery3.798-2.369-9.9660.227
Preoperative biliary drainage-4.268-9.924-1.3890.139
ASA classification IV73.91943.926-103.911< 0.001
BMI > 24 kg/m25.4681.114-9.8220.014
Malignant tumor1.284-4.916-7.4850.685
Preoperative albumin < 35 g/L0.778-4.507-6.0640.773
Pancreatic tumor-0.076-4.665-4.5140.974
Pancreatic carcinoma-0.469-5.367-4.4280.851
Ampulla of Vater carcinoma1.670-5.327-8.6680.640
Preoperative total bilirubin > 200 μmol/L11.9757.011-16.938< 0.001
Table 9 Multivariate regression analysis of perioperative delta hemoglobin
Parameter
B value
95%CI
P value
ASA classification IV75.71045.934-105.485< 0.001
BMI > 24 kg/m25.5881.285-9.8900.011
Preoperative total bilirubin > 200 μmol/L11.8726.948-16.797< 0.001