These reports on adverse events continued during the next 2 decades and in 1972 Viby-Mogensen showed that 30% of the patients whose paralysis was considered adequately reversed, continued partially relaxed.
Estos reportes de eventos adversos continuaron durante las siguientes 2 décadas, y en 1972 Viby-Mogensen demostró que el 30% de los pacientes cuya parálisis había sido juzgada como adecuadamente revertida continuaron parcialmente relajados.