Table 1 Number of HF patients with hyperkalaemia and incidence rates according to different hyperkalaemia definitions
Hyperkalemia definition | Patients identified with serum K+ qualifying valuea | % over total cohort (N = 19,194) | IR per 100 person-years | 30-day case fatality | 1-year case fatality |
|---|---|---|---|---|---|
Serum K+ >the upper limitb | 5123 | 26.7 | 7.93 (7.72–8.14) | 140 (2.7 %) | 899 (17.5 %) |
Serum K+ ≥5.5 mmol/L | 3265 | 17.0 | 4.55 (4.40–4.71) | 118 (3.6 %) | 647 (19.8 %) |
Serum K+ ≥10 % upper limitb | 2155 | 11.2 | 2.87 (2.75–2.99) | 78 (3.6 %) | 460 (21.3 %) |
Serum K+ >10 % upper limitb | 1909 | 9.9 | 2.52 (2.41–2.63) | 80 (4.2 %) | 437 (22.9 %) |
Serum K+ ≥6 mmol/L | 1097 | 5.7 | 1.40 (1.32–1.49) | 65 (5.9 %) | 294 (26.8 %) |
Serum K+ ≥20 % upper limitb | 724 | 3.8 | 0.92 (0.85–0.98) | 47 (6.5 %) | 198 (27.3 %) |