Near infrared spectroscopy (NIRS) was used to investigate the effect of behavioural states on changes of oxygenated (O2Hb), deoxygenated haemoglobin (HHb) and total haemoglobin (tHb), during endotracheal suctioning. In an open prospective design, NIRS measurements have been done during 20 suctioning episodes in 13 preterm neonates. Heart rate, arterial oxygen saturation, and carbon dioxide tension were monitored continuously. Behavioural state (BS) observations were made and documented as well. The statistical analysis showed that in patients who were active, with crying periods during suctioning (behavioural states 4-5), changes of oxygenated (p < 0.005) and deoxygenated haemoglobin (p < 0.05), as well as of arterial oxygen saturation (p < 0.05) and heart rate (p < 0.05) were significantly greater than in patients who were quiet with predominant behavioural state 1, 2 and 3. These results underline the influence of behavioural states on the physiological answers to endotracheal suctioning. NIRS proved to be a valuable tool to evaluate possible harmful effects of different suctioning techniques.

译文

近红外光谱 (NIRS) 用于研究行为状态对气管内抽吸过程中含氧 (O2Hb),脱氧血红蛋白 (HHb) 和总血红蛋白 (tHb) 变化的影响。在开放的前瞻性设计中,已在13例早产新生儿的20次吸痰发作中进行了NIRS测量。连续监测心率,动脉血氧饱和度和二氧化碳张力。还进行了行为状态 (BS) 观察并记录在案。统计分析显示,在活动的患者中,在吸痰过程中有哭闹期 (行为状态4-5),氧合 (p < 0.005) 和脱氧血红蛋白 (p < 0.05) 的变化,动脉血氧饱和度 (p < 0.05) 和心率 (p < 0.05) 均显着高于以主要行为状态1、2和3安静的患者。这些结果强调了行为状态对气管内抽吸的生理答案的影响。事实证明,NIRS是评估不同抽吸技术可能产生的有害影响的宝贵工具。

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