Research Article

Gait Speed Is Not Associated with Vasogenic Shock or Cardiogenic Shock following Cardiac Surgery, but Is Associated with Increased Hospital Length of Stay

Table 2

Outcomes stratified by gait speed tertiles.

Slow (<0.83 m/s) Intermediate (0.83–1 m/s) Fast (>1 m/s) value

Primary outcomes
 Postoperative vasogenic shock (%)13 (41.9)128 (59.3)42 (48.8)0.0805
 Postoperative cardiogenic shock (%)12 (38.7)65 (30.1)22 (25.6)0.3832

Secondary outcomes
 Both cardiogenic and vasogenic shocks8 (25.8)51 (23.6)12 (14.0)0.1474
 30-day mortality2 (6.5)3 (1.4)2 (2.3)0.1213
 ICU hours (median (Q1, Q3))52.50 (27.65, 89.03)49.00 (28.50, 73.55)46.75 (25.60, 52.60)0.0777
 Hospital length of stay (days) (median (Q1, Q3))7.00 (5.00, 10.00)6.00 (5.00, 7.00)5.00 (4.00, 6.00)0.0050
 Surgical wound infection1 (3.2)4 (1.9)0 (0.0)0.3417
 Acute kidney injury7 (22.6)23 (10.6)7 (8.1)0.0844
 Reoperation for cardiac reason3 (9.7)11 (5.1)5 (5.8)0.5881
 Prolonged ventilation5 (16.1)15 (6.9)4 (4.7)0.1027
 Postoperative atrial fibrillation7 (22.6)41 (19.0)16 (18.6)0.8806
 Need for pacemaker5 (16.1)8 (3.7)2 (2.3)0.0298
 Postoperative stroke0 (0.0)1 (0.5)2 (2.3)0.4010

Significance level with two primary outcomes; ICU = intensive care unit; prolonged ventilation is defined as > 24 hours.