title: Parameters affecting the tidal volume during expiratory abdominal compression in patients with prolonged tracheostomy mechanical ventilation.
abstract: [Purpose] The aim of this study was to clarify physical parameters affecting the tidal volume during expiratory abdominal compression in patients with prolonged tracheostomy mechanical ventilation. [Methods] Eighteen patients with prolonged mechanical ventilation were included in this study. Expiratory abdominal compression was performed on patients lying in a supine position. The abdomen above the navel was vertically compressed in synchronization with expiration and released with inspiration. We measured the tidal volume during expiratory abdominal compression. [Results] The mean tidal volume during expiratory abdominal compression was higher than that at rest (430.6 ± 127.1 mL vs. 344.0 ± 94.3 mL). The tidal volume during expiratory abdominal compression was correlated with weight, days of ventilator support, dynamic compliance and abdominal expansion. Stepwise multiple regression analysis revealed that weight (β = 0.499), dynamic compliance (β = 0.387), and abdominal expansion (β = 0.365) were factors contributing to the tidal volume during expiratory abdominal compression. [Conclusion] Expiratory abdominal compression increased the tidal volume in patients with prolonged tracheostomy mechanical ventilation. The tidal volume during expiratory abdominal compression was influenced by each of the pulmonary conditions and the physical characteristics.
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Akira
authors: A
authors: Morino
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Masahiro
authors: M
authors: Shida
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Masashi
authors: M
authors: Tanaka
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Kimihiro
authors: K
authors: Sato
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Toshiaki
authors: T
authors: Seko
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Shunsuke
authors: S
authors: Ito
authors: Department of Physical Therapy, Hokkaido Chitose Institute of Rehabilitation Technology, Japan.
authors: Shunichi
authors: S
authors: Ogawa
authors: Department of Physical Therapy, Health Sciences, School of Rehabilitation Sciences, University of Hokkaido, Japan.
authors: Naoaki
authors: N
authors: Takahashi
keywords: Expiratory abdominal compression; Prolonged mechanical ventilation; Tidal volume