Table 2.
Changes from Admission to Discharge Between Those with 30 Days Readmission and Those with No 30 Days Readmission
| Outcomes | Patients with 30-Day Readmission (n= 31) | Patients with No 30-Day Readmission (n=51) | P value* | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Admission | Discharge | Median Difference | P value | Admission | Discharge | Median Difference | P value | ||
| ∆Xrs5Hz at upright position [cmH2O/(L/s)] | 1.7 (0.2, 4.7) | 2.6 (0.4, 5) | 0.2 (−2.4, 2.2) | 0.98 | 2.2 (0.50, 5) | 2.8 (1, 5.6) | 0.1 (−0.5, 1.4) | 0.41 | 0.74 |
| FL% at upright position | 38 (0, 91) | 34 (0, 100) | 0 (−24, 9.3) | 0.77 | 26 (0, 100) | 59 (0, 91) | 0 (−9, 11) | 0.30 | 0.50 |
| ∆Xrs5Hz at supine position [cmH2O/(L/s)] | 2.6 (1.7, 8) | 4.7 (1.3, 7.5) | 0.2 (−2.37, 2.22) | 0.87 | 3 (0.8, 7) | 3 (1.3, 7.4) | 0.2 (−1.2, 1.5) | 0.52 | 0.88 |
| FL% at Supine position | 40 (27, 90) | 48 (7, 100) | 0.4 (−31, 20) | 0.91 | 60 (2,100) | 50 (2,100) | 0 (−15, 11) | 0.85 | 0.90 |
| Rrs5Hz at upright position [cmH2O/(L/s)] | 4.7 (3, 6) | 4.9 (3, 6) | 0.1 (−0.9, 0.7) | 0.92 | 5 (4, 6) | 5 (4, 6) | 0.2 (−0.5, 1) | 0.27 | 0.58 |
| Rrs5Hz at Supine position [cmH2O/(L/s)] | 5.5 (3.5, 7) | 5 (4, 6.5) | −0.4 (−0.9, 1) | 0.53 | 5.7 (4, 7) | 5.9 (4.7, 8) | 0.05 (−0.6, 1.4) | 0.19 | 0.19 |
| PIFR (L/min) | 50 (40, 60) | 50 (45, 55) | 5 (−10, 8.5) | 0.65 | 80 (55, 90) | 95 (70, 110) | 12.5 (5, 20) | 0.001 | 0.001 |
| IC (L) | 1.3 (1, 1.7) | 1.4 (0.9, 1.7) | 0.05 (−0.18, 0.5) | 0.38 | 1.2 (1.0, 1.8) | 1.3 (1.1, 1.6) | 0.06 (−0.06, 0.2) | 0.05 | 0.87 |
| mMRC | 4 (3, 4) | 3 (2, 4) | −1 (−1, 0) | 0.001 | 4 (4, 4) | 3 (2, 3) | −1 (−1, 0) | 0.001 | 0.21 |
| CAT score | 31 (28, 36) | 23 (17, 28) | −8 (−12, −3) | 0.001 | 32 (27, 33) | 19 (15, 22) | −11 (−14, −7) | 0.001 | 0.01 |
| WBC (10^9/L) | 10.5 (7, 14) | 8.4 (7, 11.4) | −0.6 (−4.8, 0.6) | 0.03 | 10.7 (9, 15) | 10 (8, 12) | −1.4 (−3.7, 1.1) | 0.004 | 0.85 |
| Eosinophils (10^9/L) | 0.07 (0.03, 0.4) | 0.14 (0.05, 0.2) | 0 (−0.17, 0.09) | 0.55 | 0.06 (0.01, 0.20) | 0.12 (0.03, 0.30) | 0.03 (−0.04, 0.18) | 0.05 | 0.08 |
| Neutrophils (10^9/L) | 7.3 (5, 10.4) | 6 (5, 8) | −0.7 (−4.2, 0.3) | 0.03 | 8.2 (6, 12.3) | 7 (5, 8) | −2 (−5, 0.7) | 0.001 | 0.46 |
| CRP (mg/L) | 30 (4, 75) | 15 (3, 41) | −3 (−57, 1) | 0.02 | 19 (7.4, 5.5) | 9 (4, 22) | −8 (−34, 1.5) | 0.001 | 0.60 |
| eGFR mL/min | 90 (66, 90) | 90 (78, 90) | 0 (−1, 9) | 0.28 | 78 (60, 90) | 90 (66, 90) | 0 (0, 9) | 0.02 | 0.31 |
Notes: *Data are presented as median IQR; *P value= difference between the groups with and without readmission.
Abbreviations: EFL, expiratory flow limitation; ∆Xrs5Hz, within breath reactance at 5 Hz; FL%, flow limitation percentage; Rrs5Hz, resistance at 5 HZ; CAT, COPD Assessment Test; CRP, C-reactive protein; eGFR, estimated glomerular filtration rate; FEV1%, predicted forced expiratory volume in 1 second; FEV1/FVC, calculated ratio between both measurements; IC, inspiratory capacity; mMRC, modified Medical Research Council dyspnoea scale; PIFR, peak inspiratory flow rate; WBC, white blood cell.