Preprocedural characteristics per grouped LoS
| Short stay (n=42) | Medium stay (n=43) | Long stay (n=29) | p Value grouped LoS | |
| Age (years) | 76.1±11.1 | 82.0±5.7 | 80.9±6.8 | 0.004 |
| Male, n (%) | 17 (41) | 14 (33) | 6 (21) | 0.084 |
| EuroSCORE 1 | 15.2±10.3 | 17.9±12.5 | 20.5±11.0 | 0.151 |
| STS-PROM | 4.5±3.1 | 7.4±5.9 | 8.4±7.1 | 0.007 |
| Clinical Frailty Score | 4.8±0.5 | 4.9±0.6 | 5.1±0.4 | 0.043 |
| METs | 5 (4.3–7.0) | 4 (3.0–5.0) | 4 (3.0–5.0) | 0.004 |
| Previous CVA, n (%) | 3 (7.1) | 4 (9.3) | 0 (0) | 0.257 |
| Previous chronic lung disease, n (%) | 12 (28.6) | 9 (20.9) | 7 (24.1) | 0.714 |
| Diabetes, n (%) | 13 (31.0) | 9 (20.9) | 8 (27.6) | 0.568 |
| Diastolic pressure (mm Hg) | 70.6±15.8 | 68.0±14.4 | 60.7±13.9 | 0.023 |
| Systolic pressure (mm Hg) | 142.8±30 | 142.6±26 | 133.2±23 | 0.270 |
| ECG | ||||
| Heart rate (beats/min) | 77.0±25.0 | 76.5±26.0 | 74.0±22.0 | 0.784 |
| Atrial fibrillation, n (%) | 5 (11.9) | 12 (27.9) | 11 (37.9) | 0.164 |
| PQ time (ms) | 168±37 | 172±60 | 192±48 | 0.825 |
| QTc time (ms) | 433±47 | 424±44 | 445±47 | 0.457 |
| QRS time (ms) | 102±28 | 92±26 | 99±18 | 0.806 |
| Conduction disorder, n (%) | 13 (31.0) | 17 (39.5) | 15 (51.7) | 0.100 |
| Echocardiogram | ||||
| Mean gradient (mm Hg) | 46±22 | 39±19 | 44±26 | 0.833 |
| Aortic valve area (cm²) | 0.78±0.23 | 0.79±0.22 | 0.74±0.30 | 0.697 |
| Aortic regurgitation (grades II–IV), n (%) | 10 (24.4) | 2 (4.7) | 7 (24.1) | 0.752 |
| LVF EF <30%, n (%) | 3 (7.1) | 2 (4.7) | 2 (7.0) | 0.402 |
| Mitral regurgitation (grades II–IV), n (%) | 17 (40.5) | 18 (41.9) | 21 (72.4) | 0.056 |
| Laboratory | ||||
| Haemoglobin | 8.0±1.1 | 7.7±1.1 | 7.6±0.8 | 0.349 |
| Haematocrit | 0.39±0.04 | 0.38±0.05 | 0.37±0.05 | 0.300 |
| INR | 1.02 (0.99–1.18) | 0.99 (0.97–1.16) | 1.06 (0.99–1.15) | 0.575 |
| Creatine | 97±63 | 102±70 | 100±47 | 0.944 |
| eGFR (MDRD) (mL/min/1.73 m2) | 70.0±24.7 | 64.1±24.5 | 60.6±11.8 | 0.243 |
| NT-proBNP | 1001 (618–2233) | 1512 (823–3040) | 1869 (1011–4139) | 0.038 |
| CT parameters | ||||
| Annulus diameter (mm) | 23.8±2.1 | 23.7±1.5 | 22.6±2.2 | 0.161 |
| Minimal diameter iliac R (mm) | 7.9±1.3 | 7.8±1.3 | 6.9±1.4 | 0.026 |
| Minimal diameter iliac L (mm) | 7.9±1.5 | 7.9±1.1 | 7.2±1.7 | 0.230 |
CVA, cerebrovascular accident; EF, ejection fraction; eGFR, estimated glomerular filtration rate; EuroSCORE, European System for Cardiac Risk Evaluation; INR, international normalised ratio; LoS, length of stay; LVF, left ventricular function; MDRD, modification of diet in renal disease; METs, Metabolic Equivalent score; NT-proBNP, N-terminal prohormone brain natriuretic peptide; STS-PROM, Society of Thoracic Surgeons-Risk of Procedural Mortality.