Table 3

Plasma potassium concentrations (mmol/l) by duration of chest pain

≤2 hours2–4 hours4–6 hours6 hoursp 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