Table 4.
Intraoperative and postoperative variables in PSM-matched cohorts.
| Parameter | Non-fast (n = 69) | Fast (n = 69) | P value |
|---|---|---|---|
| Surgical data | |||
| Contrast volume, mL | 83 (75–100) | 80 (70–90) | .011* |
| First dose of heparin, U/kg | 58 (53–66) | 56 (48–59) | .008* |
| Operative time, min | 75 (60–95) | 65 (59–84) | .067 |
| Operative procedure | |||
| TEVAR | 36 (52.2) | 39 (56.5) | .733 |
| TEVAR+aortic arch bypass | 1 (1.4) | 0 (0) | |
| Chimney/periscope/fenestration | 32 (46.4) | 30 (43.5) | |
| Intraoperative volume | |||
| Blood loss, mL | 20 (20–30) | 20 (20–30) | .171 |
| Urine output, mL | 150 (60–350) | 150 (80–300) | .886 |
| Fluid infusion, mL | 500 (400–800) | 500 (500–850) | .263 |
| Postoperative outcomes | |||
| LOS in the ICU, h | 24.0 (20.0–44.0) | 21.0 (18.0–24.0) | .005* |
| LOS in the hospital, d | 6.0 (5.0–8.0) | 5.0 (4.0–7.0) | .001* |
| Complications | |||
| Unplanned reintubation | 1 (1.4) | 0 (0) | 1.000 |
| Pulmonary infection | 1 (1.4) | 0 (0) | 1.000 |
| Delirium | 5 (7.2) | 4 (5.8) | 1.000 |
| AKI | 2 (2.9) | 1 (1.4) | 1.000 |
| Pulmonary embolism | 1 (1.4) | 1 (1.4) | 1.000 |
| Minor stroke | 0 (0) | 0 (0) | 1.000 |
| Spinal ischemia | 2 (2.9) | 0 (0) | .496 |
| Arm ischemia | 0 (0) | 1 (1.4) | 1.000 |
| Type I endoleak | 0 (0) | 0 (0) | 1.000 |
| Unplanned operation | 2 (2.9) | 0 (0) | .496 |
| Postoperative fever | 7 (10.1) | 3 (4.3) | .325 |
Categorical data are given as numbers and percentages. Continuous data are given as mean value with standard deviation (for a normal distribution) and median value with interquartile range (25th–75th percentiles) (for a non-normal distribution). P values are calculated by Student’s t test, Mann–Whitney U test, χ2 test, or Fisher’s exact test, as appropriate.
AKI = acute kidney injury, PSM = propensity-score matching, TEVAR = thoracic endovascular aortic repair.
*
P < .05.