Plasma potassium concentrations (mmol/l) by duration of chest pain
| ≤2 hours | 2–4 hours | 4–6 hours | 6 hours | p Value | |
|---|---|---|---|---|---|
| Data are mean (SD). | |||||
| Unstable angina | |||||
| Non-diabetic (n=653) | 4.08 (0.42) | 4.11 (0.39) | 4.27 (0.57) | 4.14 (0.43) | 0.01 |
| Diabetic (n=288) | 4.24 (0.49) | 4.24 (0.41) | 4.16 (0.58) | 4.30 (0.50) | NS |
| No β blocker (n=635) | 4.10 (0.43) | 4.12 (0.41) | 4.29 (0.61) | 4.20 (0.47) | 0.009 |
| β Blocker (n=302) | 4.18 (0.48) | 4.20 (0.36) | 4.14 (0.45) | 4.18 (0.45) | NS |
| Myocardial infarction | |||||
| Non-diabetic (n=629) | 4.0 (0.46) | 4.22 (0.50) | 4.19 (0.44) | 4.18 (0.45) | <0.0001 |
| Diabetic (n=179) | 4.17 (0.51) | 4.43 (0.58) | 4.50 (0.50) | 4.29 (0.56) | 0.05 |
| No β blocker (n=693) | 4.03 (0.49) | 4.28 (0.53) | 4.25 (0.42) | 4.23 (0.50) | <0.0001 |
| β Blocker (n=113) | 4.08 (0.38) | 4.20 (0.49) | 4.23 (0.62) | 4.08 (0.33) | NS |