the practice of suppressing warning ventricular ectopic activity has gradually been abandoned with the result that whereas in 1967 to 1968 33 per cent of all patients received lignocaine therapy , in 1972 to 1973 the number had fallen to 15 per cent , and in 1977 to 1978 to 4 per cent .
C0151636
ventricular
C0023660
lignocaine