Table 1.
Cohort summary and randomization group comparison of patients returning at 6-weeks.
| Lidocaine (N=211) | Placebo (N=209) | |
|---|---|---|
| Age, years (SD) | 67 (9.1) | 67 (9.5) |
| Gender, N (% Female) | 60 (28.4) | 49 (23.4) |
| Race, N (% Caucasian) | 200 (94.8) | 186 (89.0) |
| Weight, kg (SD) | 83.8 (16.5) | 82.8 (17.4) |
| History of hypertension, N (%) | 124 (59.0) | 128 (61.2) |
| Previous myocardial infarction, N (%) | 31 (14.7) | 38 (18.2) |
| History of atrial fibrillation, N (%) | 56 (26.5) | 50 (23.9) |
| History of neurological incident | 23 (10.9) | 19 (9.1) |
| Ejection fraction (Q1, Q3) | 55 (50, 55) | 55 (55, 60) |
| Ejection fraction < 30%, N (%) | 2 (0.9) | 5 (2.4) |
| Years of education (Q1, Q3) | 15 (12, 16) | 16 (13, 17) |
| Preoperative statin use, N (%) | 121 (57.3) | 131 (62.7) |
| Preoperative platelet inhibitor use, N (%) | 149 (70.6) | 150 (71.8) |
| Preoperative cognitive index (SD)* | 0.02 (0.7) | 0.01 (0.7) |
| Lidocaine level at baseline, mcg/mL (SD) + | 0.09 (0.3) | 0.06 (0.2) |
| Baseline CES-D (SD) * | 9.0 (6.7) | 8.4 (6.8) |
| Baseline STAI (SD) * | 36.7 (11.4) | 36.2 (10.7) |
| Surgical Procedure, N (%) | ||
| CABG | 61 (28.9) | 62 (29.7) |
| CABG + Valve | 21 (10.0) | 23 (11.0) |
| Valve | 129 (61.1) | 124 (59.3) |
| Previous CABG/Valve Surgery, N (%) | 24 (11.4) | 24 (11.5) |
| CPB time, min (Q1, Q3) | 157 (127, 198) | 166 (124, 214) |
| Cross-clamp time, min (Q1, Q3) | 100 (74, 120) | 101 (67, 121) |
| Number of bypass vessels (Q1, Q3) ‡ | 3 (2, 4) | 3 (2, 4) |
Missing data imputed using SRCWARE and combined statistics presented here were generated using SAS proc MIANALYZE.
Baseline values are non-zero numbers because the analytical measurement range of the lidocaine assay is 0.6 – 8.0 mcg/mL, thus values below this linear range (including 0 values) may be reported as <0.6 mcg/mL.
Among those that received grafts.
Data are reported as mean (SD) or median (Q1, Q3) as appropriate.
CES-D: Center for Epidemiologic Studies – Depression Scale, STAI: State Trait Anxiety Inventory, CPB: cardiopulmonary bypass.