Table 2.
Dichotomized demographic and clinical characteristics of patients who achieved and did not achieve blood serum magnesium study target within 72 hours (3.8 mEg/L).
| Patients with serum Mg ≥3.8 mEg/L (n = 254) | Patients with serum Mg <3.8 mEg/L (n = 872) | p value | |
|---|---|---|---|
| Age (mean, SD) | 73.5 (13.1) | 68.3 (13.3) | <0.0001 |
| Sex female (N, percent) | 134 (52.8) | 338 (38.8) | <0.0001 |
| Diagnosis, n (%) | |||
| Acute cerebral ischemia | 178 (70.1) | 631 (72.4) | 0.13 |
| 0.13 intracranial hemorrhage | 205 (23.5) | 72 (28.3) | |
| Stroke mimic | 4 (1.6) | 35 (4.0) | |
| Race, n (%) | |||
| White | 203 (79.9) | 651 (74.7) | 0.06 |
| Black/African American | 22 (8.7) | 135 (15.5) | |
| Asian | 27 (10.6) | 75 (8.6) | |
| Other | 2 (0.8) | 10 (1.2) | |
| Ethnicity–Hispanic, n (%) | 65 (25.6) | 205 (23.5) | 0.27 |
| Medical history | |||
| Hypertension, n (%) | 202 (79.5) | 675 (77.5) | 0.55 |
| Diabetes, n (%) | 51 (20.1) | 199 (22.8) | 0.39 |
| Hyperlipidemia, n (%) | 111 (43.7) | 422 (48.5) | 0.10 |
| Atrial fibrillation, n (%) | 63 (24.8) | 191 (21.9) | 0.35 |
| CAD, n (%) | 61 (24.0) | 184 (21.1) | 0.34 |
| MI, n (%) | 31 (12.2) | 94 (10.8) | 0.57 |
| CABG, n (%) | 6 (2.4) | 24 (2.8) | 0.82 |
| Prior stroke/TIA, n (%) | 23 (8.3) | 65 (7.5) | 0.69 |
| Tobacco use, n (%) | 41 (16.1) | 158 (18.1) | 0.51 |
| Any alcohol use, n (%) | 87 (34.4) | 356 (40.9) | 0.06 |
| Time intervals (mins), median (IQR) | |||
| Onset to paramedic evaluation | 16 (8-32) | 16 (8-36) | 0.73 |
| Onset to ED arrival | 58 (46-77) | 58 (46-80) | 0.82 |
| Severity scores | |||
| Prehospital GCS, median (IQR) | 15 (14-15) | 15 (14-15) | 0.90 |
| Prehospital LAMS, median (IQR) | 4 (3-5) | 4 (3-5) | 0.48 |
| Serum magnesium level mean (SD) | 4.7 (0.9) | 2.3 (0.7) | <0.0001 |
| Patients with CAEs, n (%) | 47 (18.5) | 112 (12.8) | 0.03 |
| Number of CAEs, n (%) | |||
| 0 | 207 (81.5) | 760 (87.2) | 0.09 |
| 1 | 40 (15.7) | 96 (11.0) | |
| 2 | 7 (2.8) | 14 (1.6) | |
| 3 | 0 (0.0) | 2 (0.2) |