Table 2.
Action Potential Profile of 3‐Different Types of Cardiomyocytes
| APs (n=16) | Peak (mV) | MDP (mV) | Amp (mV) | Interval (second) | dV/dtmax (V/second) | APD10 (ms) | APD30 (ms) | APD90 (ms) | APD10‐30 /APD90 |
|---|---|---|---|---|---|---|---|---|---|
| Nodal type (n=8) | 18.2±1.5 | −46.5±1.2 | 64.7±2.2 | 2.5±0.5 | 2.6±0.4 | 25.6±5.5 | 57.8±9.6 | 135.9±15.3 | 0.23±0.01 |
| Atrial type (n=3) | 29.6±6.0 | −59.3±1.9 | 89.0±4.1 | 2.1±1.1 | 4.3±0.9 | 38.0±3.3 | 90.2±16.4 | 155.3±28.3 | 0.33±0.03 |
| Ventricular type (n=5) | 27.4±3.2 | −60.7±2.6 | 88.1±2.9 | 2.1±0.5 | 4.9±0.6 | 50.2±10.4 | 133.2±36.8 | 212.4±0.4 | 0.37±0.02 |
Amp indicates amplitude; APD10‐30/APD90, ratio of APD10‐30 to APD90; APDX, APD at X% repolarization; APs, action potentials; dV/dtmax, maximal rate of depolarization; MDP, maximum diastolic potential.