吸氧流量及湿化液量与吸氧噪音的关系

目的探讨吸氧时吸氧流量及湿化瓶内湿化液量与吸氧噪音的关系。方法将两套吸氧装置的湿化瓶分别加入1/3、1/2的蒸馏水作为湿化液，分别记录两套吸氧装置在流量为2 L/min、5 L/min时产生的噪音值。结果相同容量湿化液下不同吸氧流量产生的噪音值比较，差异具有统计学意义（均P＜0.01），具有氧气流量越大噪音越大的趋势；相同吸氧流量下不同容量湿化液吸氧产生的噪音值比较，差异有统计学意义（均P＜0.01），具有湿化液越多噪音越大的趋势。结论吸氧产生的噪音随着吸氧流量的增大和湿化液的增多而增大，建议在给患者吸氧时湿化瓶内加入蒸馏水的量在1/3和1/2的标记中间或再偏小些。

Relationship among oxygen flow or the amount of wetting liquid and oxygen noise

Objective To investigate the relationship among the oxygen flow or the amount of wetting liquid in humidification bottle and oxygen noise.Method Distilled water were added to one third or half of two sets of oxygen humidification bottle device as the humidification fluid,the noise value generated in the flow rate of 2 L/min,5L/min by two set of inspired oxygen apparatus were recorded.Results Different noise value with same capacity humidifying fluid but different oxygen flow was statistically significant（all P〈0.01）,the more flow of oxygen the greater the noise; Different noise value generated by the same oxygen flow but different capacity humidifying liquid oxygen was statistically significant（all P〈0.01）,more humidification fluid,greater the noise. Conclusion Noise generated with the increasing oxygen flow rate and the amount of wetting liquid.