Table 3 Demographic, preoperative and diaphragm variables associated to the change in diaphragm thickness
From: Diaphragm thickening in cardiac surgery: a perioperative prospective ultrasound study
Change in diaphragm thickness between day one preoperatively and day + 1 after surgery | ||||
|---|---|---|---|---|
> 10% of decrease | Stability | > 10% of increase | ||
n = 29 | n = 19 | n = 19 | P value | |
Age (yo) | 73 [66–81] | 66 [59–74] | 74 [58–76] | 0.2 |
BMI (kg/m2) | 26 (4) | 27 (4) | 25 (4) | 0.2 |
Euroscore 2 | 2 [1–4] | 1 [1–3] | 1 [1, 2] | 0.3 |
Length of stay (d) | 3 [2–5] | 2 [2–4] | 2 [2] | 0.046 |
RR (cycles/min) | 25 (8) | 22 (7) | 24 (8) | 0.3 |
TV (ml) | 411 (135) | 432 (123) | 436 (124) | 0.8 |
RR/TV | 67 (30) | 62 (28) | 58 (26) | 0.6 |
Cross clamp time (min) | 62 (24) | 74 (35) | 61 (35) | 0.4 |
Surgery duration (h) | 5.4 (1) | 5.8 (1) | 5.2 (1) | 0.2 |
Total MV (h) | 10 (4) | 9 (1) | 9 (2) | 0.2 |
CPB time (min) | 93 (25) | 103 (35) | 90 (48) | 0.5 |
Postoperative MV (h) | 4.5 (3) | 3 (1) | 3.3 (1) | 0.1 |
TEE preoperative (mm) | 2.6 (0.6) | 2.4 (0.4) | 2.1 (0.4) | 0.002 |
TEE during SBT (mm) | 2.4 (0.7) | 2.2 (0.5) | 2.2 (0.6) | 0.5 |
TEE day one (mm) | 2 (0.4) | 2.3 (0.4) | 2.7 (0.6) | < 0.001 |
Preoperative TF (%) | 40 (20) | 30 (14) | 34 (18) | 0.7 |
SBT TF (%) | 14 (13) | 16 (14) | 23 (16) | 0.1 |
Day one TF (%) | 13 (12) | 9 (8) | 12 (13) | 0.6 |
Loss of TF from D − 1 and SBT | 25 (17) | 15 (15) | 11 (21) | 0.02 |
Loss of TF from SBT to D + 1 | − 2 (14) | − 6 (12) | − 11 (14) | 0.08 |
Loss of tf from d − 1 to d + 1 | 27 (20) | 21 (12) | 22 (21) | 0.5 |