Hawkins et al. published a preliminary study in 1997, analyzing all anesthesia-related maternal deaths between 1979 and 1990; they found 129 anesthesia-related maternal deaths; 67 under general anesthesia and 33 with neuraxial anesthesia.
Hawkins et al. publicaron en 1997un primer estudio donde analizaron todas las muertes maternas relacionadas con anestesia desde 1979 a 1990; encontraron 129 muertes maternas asociadas a anestesia: 67 bajo anestesia general y 33 con anestesia neuroaxial.