Table 1.
Demographic characteristics of the POD and NPOD groups
| Characteristic | POD (n=56) | NPOD (n=56) | P-value |
|---|---|---|---|
| Age (years) | 73.2±6.5 | 72.7±8.3 | 0.72 |
| Female | 29 | 33 | 0.57 |
| Weight (kg) | 60±15 | 63±16 | 0.31 |
| Education (years) | 8.2±2.3 | 8.5±2.8 | 0.54 |
| ASA grade (I/II/III) | 9/41/5 | 15/36/6 | 0.40 |
| MMSE score at T0 | 27.91±1.53 | 28.13±1.62 | 0.46 |
| Charlson’s Comorbidity Index at T0 | 1.5±0.7 | 1.7±0.8 | 0.16 |
| Flap reconstruction | 0.36 | ||
| Forearm | 25 | 24 | |
| Anterolateral thigh | 20 | 15 | |
| Peroneal muscles | 11 | 17 | |
| Operation duration (min) | 481±102 | 470±108 | 0.58 |
| Anesthesia duration (min) | 515±97 | 506±104 | 0.64 |
| Blood loss (mL) | 802±211 | 785±203 | 0.66 |
| RBC transfusion (units) | 2.6±1.8 | 2.1±1.9 | 0.16 |
| FFP transfusion (units) | 2.2±1.6 | 1.8±1.5 | 0.18 |
| Volume of infusion (mL) | 3,612.0±613.9 | 3,498.5±656.5 | 0.35 |
Note: Data are shown as mean ± SD or numbers.
Abbreviations: ASA, American Society of Anesthesiologists; FFP, fresh frozen plasma; MMSE, Mini-Mental State Examination; NPOD, no POD; POD, postoperative delirium; RBC, red blood cells; SD, standard deviation; min, minutes; T0, prior to surgery.