| AP | Action potential |
| APD | Action potential duration |
| APD90 | Action potential duration at 90% repolarization |
| BKCa | Big conductance calcium activated potassium channel, (Maxi-K, slo1, KCa1.1) |
| CM | Cardiomyocytes |
| EAD | Early afterdepolarization |
| EHT | Engineered heart tissue |
| hiPSC-CMs | Human induced pluripotent stem cell-derived cardiomyocytes |
| IBTX | Iberiotoxin |
| IBK,Ca | Big-conductance calcium activated potassium current |
| ICa,L | L-type calcium current |
| LV | Left ventricle |
| RMP | Resting membrane potential |
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