Utility of phrenic nerve conduction study and respiratory muscle potential tests to assess respiratory muscle in Japanese school children

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  • Oguri Masayoshi
    Department of Pathobiological Science and Technology, Faculty of Medicine, Tottori University
  • Miyagi Mari
    Division of Clinical Laboratory, Tottori University Hospital
  • Hara Ayako
    Division of Clinical Laboratory, Tottori University Hospital
  • Hirooka Yasuaki
    Department of Pathobiological Science and Technology, Faculty of Medicine, Tottori University
  • Motokura Toru
    Division of Clinical Laboratory Medicine, Department of Pathophysiological and Therapeutic Science, School of Medicine, Tottori University Faculty of Medicine

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Other Title
  • 学童期における呼吸筋検査
  • 学童期における呼吸筋検査 : 横隔膜の神経伝導検査および口腔内圧について
  • ガクドウキ ニ オケル コキュウキン ケンサ : オウカクマク ノ シンケイ デンドウ ケンサ オヨビ コウコウ ナイアツ ニ ツイテ
  • —横隔膜の神経伝導検査および口腔内圧について—

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Abstract

<p>Phrenic nerve conduction studies (PNCSs) and respiratory muscle potential tests are used to assess respiratory muscle lesions in amyotrophic lateral sclerosis. This study aimed to determine normal values of PNC and respiratory muscle potentials in healthy Japanese school children. PNCS was performed by transcutaneous stimulation in the neck and recording diaphragmatic potentials from surface electrodes placed at the ipsilateral subcostal arch at the midclavicular line. Maximal expiratory and inspiratory potentials were measured using a multifunctional spirometer. In PNCS, amplitude, but not latency, changed with respiration. In the respiratory muscle potential test, the maximal inspiratory potential exhibited moderate correlation with both vital capacity and forced expiratory volume in 1 s. Using the reference values obtained in the current study, we plan to examine the potential utility of PNCS and respiratory muscle potential tests to assess respiratory muscle in school children.</p>

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