Adams J A, Zabaleta I A, Stroh D, Sackner M A
Division of Neonatology, Mount Sinai Medical Center, Miami Beach, Florida 33140.
Pediatr Pulmonol. 1993 Oct;16(4):254-8. doi: 10.1002/ppul.1950160408.
Measurement of breath amplitude (BA) and similarly tidal volume (VT) in newborn infants is the standard for detection of apnea and hypopneas. The purpose of our study was to compare the accuracy for BA by three frequently utilized noninvasive respiratory monitors: respiratory inductive plethysmography (RIP), mercury in silastic strain gauges (SG), and impedance pneumography (IP). Twenty healthy full-term infants were studied in both supine and prone postures. The RC and AB gain factors for RIP were obtained using qualitative diagnostic calibration (QDC) procedure. The electrical gain of IP was set equivalent to the BA signal of a pneumotachograph (PNT). The three devices were calibrated in the supine posture and measurements were repeated in the prone posture without changing their calibration factors. Compared to PNT, postural change did not significantly alter BA measured by RIP. The accuracy of breath-to-breath BA measurement in the prone posture was worse for IP and SG compared to RIP and PNT. In contrast to SG or IP, the accuracy of BA measurement maintained was by RIP after a postural change from supine to prone in fullterm newborns.
测量新生儿的呼吸幅度（BA）以及类似的潮气量（VT）是检测呼吸暂停和呼吸不足的标准。我们研究的目的是比较三种常用的非侵入性呼吸监测仪对BA的测量准确性：呼吸感应体积描记法（RIP）、硅橡胶应变片式水银压力计（SG）和阻抗式肺量计（IP）。对20名健康足月儿在仰卧位和俯卧位两种姿势下进行了研究。使用定性诊断校准（QDC）程序获得RIP的RC和AB增益因子。将IP的电增益设置为等同于呼吸流速计（PNT）的BA信号。这三种设备在仰卧位进行校准，然后在俯卧位重复测量，且不改变其校准因子。与PNT相比，体位改变并未显著改变RIP测量的BA。与RIP和PNT相比，IP和SG在俯卧位时逐次呼吸BA测量的准确性较差。与SG或IP不同，足月新生儿从仰卧位变为俯卧位后，RIP保持的BA测量准确性较高。
