To the Editor.—
I read the recent letter entitled "Sinus Standstill Following Lidocaine Administration" by Antonelli and Bloch (1982;248:827). Although the authors stated that "lidocaine does not depress the sinus node at the conventional therapeutic dose," we reported in 1973 the first instance of sinus standstill after intravenous lidocaine administration in The Journal.1 Our patient received the conventional therapeutic doses of lidocaine, experienced sinus standstill, and died. She did not have sick sinus syndrome or receive either quinidine or phenytoin at the time. Therefore, we advocate great care in administering this drug, even at doses within the recommended therapeutic ranges.