Manual Artificial Respiration. Pedagogical and Fatigue Factors Involved in Its Use

Abstract
-67 college and 100 academy students were used. They all were instructed in 5 methods of artificial respiration: (1) prone-pressure (Schafer), (2) arm-lift back-pressure (Nielsen), (3) arm-lift chest-pressure (Silvester), (4) hip-roll prone-pressure and (5) hip-lift (college students only) and hip-lift prone-pressure (academy students only.) From the standpoint of the ease of learning and operation, methods of artificial respiration studied may be arranged in order of increasing difficulty as follows: (1) prone-pressure (Schafer) (the ease of learning estimated by inference), (2) arm-life back-pressure (Nielsen), (3) arm-lift chest-pressure (Silvester), (4) hip-roll prone-pressure and (5) hip-lift and hip-lift prone-pressure.