Lozano-Garcia Manuel, Sarlabous Leonardo, Moxham John, Rafferty Gerrard F, Torres Abel, Jolley Caroline J, Jane Raimon
Annu Int Conf IEEE Eng Med Biol Soc. 2018 Jul;2018:3342-3345. doi: 10.1109/EMBC.2018.8513046.
The relationship between surface diaphragm mechanomyography (sMMGdi), as a noninvasive measure of inspiratory muscle mechanical activation, and crural diaphragm electromyography (oesEMGdi), as the invasive gold standard measure of diaphragm electrical activation, had not previously been examined. To investigate this relationship, oesEMGdi and sMMGdi were measured simultaneously in 6 healthy subjects during an incremental inspiratory threshold loading protocol, and analyzed using fixed sample entropy (fSampEn). A positive curvilinear relationship was observed between mean fSampEn sMMGdi and oesEMGdi (r = 0.67). Accordingly, an increasing electromechanical ratio was also observed with increasing inspiratory load. These findings suggest that sMMGdi could provide useful noninvasive measures of inspiratory muscle mechanical activation.
作为吸气肌机械激活的一种非侵入性测量方法的表面膈肌肌动图（sMMGdi）与作为膈肌电激活的侵入性金标准测量方法的膈脚肌电图（oesEMGdi）之间的关系此前尚未得到研究。为了探究这种关系，在6名健康受试者进行递增吸气阈值负荷试验期间，同时测量了oesEMGdi和sMMGdi，并使用固定样本熵（fSampEn）进行分析。观察到平均fSampEn sMMGdi与oesEMGdi之间呈正曲线关系（r = 0.67）。因此，随着吸气负荷增加，机电比率也增加。这些发现表明，sMMGdi可为吸气肌机械激活提供有用的非侵入性测量方法。
