Toxicodynamic Analysis of Cardiac Effects Induced by Four Cholinesterase Inhibitors in Rats

The cardiac effect of edrophonium (2–20 μmol kg−1), pyridostigmine (0.5‐5 μmol kg−1), neostigmine (0.05‐0.5 μmol kg−1) and ambenonium (0.02‐0.3 μmol kg−1) was investigated after intravenous administration to rats.