Department of Obstetrics and Gynaecology, The University of Melbourne, Melbourne, Australia.
Acta Paediatr. 2012 May;101(5):484-7. doi: 10.1111/j.1651-2227.2011.02571.x. Epub 2012 Jan 23.
To identify the optimal sensor application method that gave the quickest display of accurate heart rate (HR) data using the Nellcor OxiMax N-600x pulse oximeter (PO).
Stable infants who were monitored with an electrocardiograph were included. Three sensor application techniques were studied: (i) sensor connected to cable, then applied to infant; (ii) sensor connected to cable, applied to investigator's finger, and then to infant; (iii) sensor applied to infant, then connected to cable. The order of techniques tested was randomized for each infant. Time taken to apply the PO sensor, to display data and to display accurate data (HR(PO) = HR(ECG) ± 3 bpm) were recorded using a stopwatch.
Forty infants were studied [mean (SD) birthweight, 1455 (872) g; gestational age, 31 (4) weeks; post-menstrual age, 34 (4) weeks]. Method 3 acquired any data significantly faster than methods 1 (p = 0.013; CI, -9.6 to -3.0 sec) and 2 (p = 0.004; CI, -5.9 to -1.2 sec). Method 3 acquired accurate data significantly faster than method 1 (p = 0.016; CI, -9.4 to -1.0 sec), but not method 2 (p = 0.28).
Applying the sensor to the infant before connecting it to the cable yields the fastest acquisition of accurate HR data from the Nellcor PO.
使用 Nellcor OxiMax N-600x 脉搏血氧仪（PO）确定能最快显示准确心率（HR）数据的最佳传感器应用方法。
纳入接受心电图监测的稳定婴儿。研究了三种传感器应用技术：（i）传感器连接到电缆，然后应用于婴儿；（ii）传感器连接到电缆，应用于研究者的手指，然后应用于婴儿；（iii）传感器应用于婴儿，然后连接到电缆。为每个婴儿随机测试技术的顺序。使用秒表记录应用 PO 传感器、显示数据和显示准确数据（HR(PO) = HR(ECG) ± 3 bpm）所需的时间。
研究了 40 名婴儿[平均（标准差）出生体重，1455（872）g；胎龄，31（4）周；校正胎龄，34（4）周]。方法 3 获得任何数据的速度明显快于方法 1（p = 0.013；CI，-9.6 至-3.0 秒）和 2（p = 0.004；CI，-5.9 至-1.2 秒）。方法 3 获得准确数据的速度明显快于方法 1（p = 0.016；CI，-9.4 至-1.0 秒），但不如方法 2（p = 0.28）。
在将传感器连接到电缆之前将其应用于婴儿可最快获得 Nellcor PO 的准确 HR 数据。
