Table 3. Comparison of initial laboratory data and the mean values of follow-up data between the hyponatremia and “normal serum sodium level” groups.
| Variable | With hyponatremia | Without hyponatremia | ||||
|---|---|---|---|---|---|---|
| Initial (n=48) | Follow-up (n=40) | P value | Initial (n=43) | Follow-up (n=35) | P value | |
| WBC count (/µL) | 11,845 (8,465–18,680) | 8,470 (7,250–10,003) | 0.007* | 9,500 (6,780–13,510) | 8,340 (7,080–9,840) | 0.706 |
| Neutrophil (%) | 61.0 (49.2–74.4) | 31.0 (22.3–41.9) | 0.020* | 47.1 (29.1–65.6) | 30.6 (25.2–41.3) | 0.762 |
| Lymphocyte (%) | 27.3 (17.1–39.8) | 58.1 (48.1–66.4) | 0.012* | 42.0 (27.1–59.0) | 59.4 (48.2–64.0) | 0.648 |
| Hemoglobin (g/dL) | 11.5 (11.0–12.3) | 12.2 (11.5–12.9) | 0.227 | 12.0 (11.4–12.7) | 12.4 (11.8–12.8) | 0.606 |
| Hematocrit (%) | 34.2 (32.8–36.1) | 36.3 (34.5–37.7) | 0.136 | 36.0 (34.0–37.4) | 36.8 (34.8–38.1) | 0.510 |
| Platelet count (×103/mm3) | 305 (266–412) | 348 (320–440) | 0.171 | 273 (222–364) | 325 (275–358) | 0.016* |
| T. bilirubin (mg/dL) | 0.4 (0.3–0.6) | 0.3 (0.3–0.4) | 0.047* | 0.3 (0.2–0.4) | 0.4 (0.2–0.4) | 0.631 |
| AST (IU/L) | 39 (31–52) | 43 (35–48) | 0.958 | 40 (31–55) | 39 (33–44) | 0.184 |
| ALT (IU/L) | 17 (13–40) | 16 (13–18) | 0.882 | 20 (13–32) | 16 (12–18) | 0.970 |
| BNP (pg/mL) | 81.3 (37.5–176.6) | 21.0 (13.5–29.7) | 0.097 | 44.1 (21.7–87.6) | 19.1 (13.8–28.3) | 0.770 |
| ESR (mm/hr) | 50 (31–72) | 11 (5–17) | 0.083 | 31 (18–57) | 8 (4–14) | 0.207 |
| CRP (mg/dL) | 52.8 (23.7–110. 5) | 0.3 (0.1–0.5) | 0.001* | 13.2 (3.1–45.9) | 0.2 (0.1–0.3) | 0.345 |
| LMA Z score | 3.61 (3.03–4.17) | 2.98 (2.59–3.80) | 0.236 | 3.38 (2.79–3.87) | 2.96 (2.41–3.24) | 0.134 |
| LAD Z score | 1.02 (0.41–2.22) | 0.83 (0.35–1.56) | 0.098 | 0.68 (0.14–1.26) | 0.86 (0.07–1.17) | 0.318 |
| LCX Z score | 0.32 (0.02–0.79) | 0.68 (0.26–1.12) | 0.099 | 0.16 (–0.26–0.78) | 0.28 (–0.20–0.88) | 0.024* |
| RCA Z score | 0.89 (0.29–1.58) | 0.78 (–0.11–1.11) | 0.167 | 0.44 (–0.22–1.20) | 0.54 (–0.06–1.14) | 0.438 |
| LVEF | 67.8 (64.3–70.0) | 65.3 (61.9–70.4) | 0.195 | 65.2 (63.5–69.3) | 66.9 (63.4–68.0) | 0.652 |
Values are presented as median (interquartile range).
WBC, white blood cell; T. bilirubin, total bilirubin; AST, aspartate transaminase; ALT, alanine transaminase; BNP, brain natriuretic peptide; ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; LMA, left main artery; LAD, left anterior descending artery; LCX, left circumflex artery; RCA, right coronary artery; LVEF, left ventricular ejection fraction.
*P<0.05, statistically significant difference.