Warren R H, Alderson S H
Pediatric Pulmonary Medicine Section, Arkansas Children's Hospital, Little Rock 72202.
Crit Care Med. 1988 Feb;16(2):161-4. doi: 10.1097/00003246-198802000-00013.
Respiratory inductive plethysmography (RIP) is a noninvasive method of assessing breathing pattern. We employed a single-position graphic (SPG) calibration technique for gain factor calculation in 38 studies on five sedated lambs who were receiving intermittent mandatory mechanical ventilation (IMV). The SPG technique uses selection of two breaths from a 20-sec run of breaths with different ribcage/pneumotachograph (PNT) and abdomen/PNT ratios for gain calculation. Validation of gains was performed by comparing volumes obtained simultaneously by RIP and PNT. The mean tidal volume (VT) measured by RIP corresponded well with mean VT measured by PNT with animals receiving 42.2 +/- 13.2 (SD) % of breaths over 1 min by IMV. Time for calibration and validation ranged between 15 and 30 min. The results of this study suggest that the SPG calibration technique provides an accurate method of calibration of RIP in sedated lambs receiving IMV.
呼吸感应体积描记法（RIP）是一种评估呼吸模式的非侵入性方法。我们采用单位置图形（SPG）校准技术，对5只接受间歇性强制机械通气（IMV）的镇静羔羊进行了38项研究，以计算增益因子。SPG技术通过从20秒的呼吸序列中选择两次呼吸，利用不同的胸廓/呼吸速度描记器（PNT）和腹部/PNT比率来计算增益。通过比较RIP和PNT同时获得的容积来验证增益。在接受IMV且每分钟呼吸42.2±13.2（标准差）%的动物中，RIP测量的平均潮气量（VT）与PNT测量的平均VT非常吻合。校准和验证时间在15至30分钟之间。本研究结果表明，SPG校准技术为接受IMV的镇静羔羊的RIP校准提供了一种准确的方法。
