Explanatory Factors for the Use of Local Anesthetics in the Management of Pain Induced by Arterial Puncture for Blood Gas Analysis by Nurses Julio Alberto Mateos-Arroyo; Ignacio Zaragoza-García; Rubén Sánchez-Gómez; Paloma Posada-Moreno; Sara García-Almazán; Ismael Ortuño-Soriano;