The collection of sternocleidomastoid muscle EMG and its significance for monitoring of the central drive / 中国实用内科杂志

ABSTRACT

Objective To investigate the methods of recording EMGscm and its significance in monitoring of central drive.Methods Three methods of collecting EMGscm were compared.The subjects were asked to re-breath until the highest PCO2-ET was reached and the EMGscm,Flow,VT(tidal volume),Ttot(Total time of respiratory cycle),and PCO2-ET were measured during the re-breathe.Results (1)The EMGscm did not appeared until the PCO2-ET reached the value of(48.2?2.6)mm Hg.The value of PCO2-EThighest was(81.2?6.6)mm Hg.(2)As the PETCO2 increased,the Ttot became shorter and shorter,from(2.91?0.85)s to(1.92?0.39)s,while the VT became higher and higher,from(0.68?0.27)L to(2.21?0.37)L.There was a statistical relationship between the Ttot(or VT)and the PCO2-ET,and their correlative coefficient was respectively(0.86?0.12)and(0.89?0.13)(both P