Optimal electrode position for abdominal functional electrical stimulation

Journal of Applied Physiology
E J McCaugheyJane E Butler

Abstract

Abdominal functional electrical stimulation (abdominal FES) improves respiratory function. Despite this, clinical use remains low, possibly due to lack of agreement on the optimal electrode position. This study aimed to ascertain the optimal electrode position for abdominal FES, assessed by expiratory twitch pressure. Ten able-bodied participants received abdominal FES using electrodes placed: 1) on the posterolateral abdominal wall and at the motor points of 2) the external oblique muscles plus rectus abdominis muscles, and 3) the external obliques alone. Gastric (Pga) and esophageal (Pes) twitch pressures were measured using a gastroesophageal catheter. Single-stimulation pulses were applied at functional residual capacity during step increments in stimulation current to maximal tolerance or until Pga plateaued. Stimulation applied on the posterolateral abdominal wall led to a 71% and 53% increase in Pga and Pes, respectively, compared with stimulation of the external oblique and rectus abdominis muscles ( P < 0.001) and a 95% and 56% increase in Pga and Pes, respectively, compared with stimulation of the external oblique muscles alone ( P < 0.001). Stimulation of both the external oblique and rectus abdominis muscles led to ...Continue Reading

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Citations

Jul 26, 2019·Critical Care : the Official Journal of the Critical Care Forum·Euan J McCaugheyJane E Butler

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