Zimmerman P V, Connellan S J, Middleton H C, Tabona M V, Goldman M D, Pride N
Am Rev Respir Dis. 1983 Feb;127(2):209-14. doi: 10.1164/arrd.1983.127.2.209.
Volume-motion coefficients were determined for the rib cage and abdomen in normal human subjects in upright, supine, and semirecumbent postures by the isovolume calibration technique of Konno and Mead (J Appl Physiol 1967; 22:407-422, using the respiratory inductive plethysmograph (RIP) to measure displacements of rib cage and abdominal walls. Volume motion coefficients changed systematically with posture; those for the rib cage were smallest in the upright posture, and for the abdomen, greatest in the upright posture. These volume motion coefficients were then used to estimate tidal volume during resting breathing in the different postures, and compared with estimates of tidal volume derived from calibration by the change in posture technique reported by Sackner and coworkers (American Review of Respiratory Disease 1980; 122:867-871). Estimates of tidal volume derived from RIP signals using both calibration techniques were compared with independently measured spirometric volume changes. Errors in tidal volume averaged 6% with the isovolume technique and 9 to 23% with the change in posture technique (depending upon whether the calibrating postures were upright, supine or semirecumbent supine). The larger errors with the change in posture calibration method are attributable to both the change in volume motion coefficients with posture and the change in distribution of tidal volume between rib cage and abdomen compartments with change in posture.
采用Konno和Mead的等容量校准技术（《应用生理学杂志》1967年；22:407 - 422），使用呼吸感应体积描记器（RIP）测量胸廓和腹壁的位移，确定了正常人体受试者在直立、仰卧和半卧位姿势下胸廓和腹部的容积运动系数。容积运动系数随姿势有系统性变化；胸廓的容积运动系数在直立姿势下最小，而腹部的在直立姿势下最大。然后，这些容积运动系数被用于估计不同姿势下静息呼吸时的潮气量，并与Sackner及其同事报告的姿势改变技术校准得出的潮气量估计值进行比较（《美国呼吸疾病评论》1980年；122:867 - 871）。使用两种校准技术从RIP信号得出的潮气量估计值与独立测量的肺量计体积变化进行了比较。等容量技术测得的潮气量平均误差为6%，姿势改变技术测得的误差为9%至23%（取决于校准姿势是直立、仰卧还是半卧位仰卧）。姿势改变校准方法产生较大误差的原因，既在于容积运动系数随姿势的变化以及潮气量在胸廓和腹部腔室之间的分布随姿势的变化。
