EFFECT OF RESPIRATORY APPARATUS ON TIMING AND DEPTH OF BREATHING IN MAN
EFFECT OF RESPIRATORY APPARATUS ON TIMING AND DEPTH OF BREATHING IN MAN
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DOI：
10.1016/0034-5687(85)90130-6
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发表时间：
1985-01-01
期刊：
影响因子：
--
通讯作者：
HUGHES, JMB
中科院分区：
文献类型：
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作者：
MAXWELL, DL;COVER, D;HUGHES, JMB
使用呼吸电感体积描记法测量（1）带或不带咬嘴的鼻夹、（2）死腔增量高达 600 ml 的管式呼吸以及（3）具有高气流流入的文丘里面罩（将有效死腔降至零）对呼吸的影响。管道长度的有效死区比其排水量小 25%。对死腔增加的主要反应是 VT 增加，而频率或时间没有任何变化。 VE 的增加比有效死腔的通气量大 16%。高气流的面罩不会影响呼吸模式。单独使用外部设备（鼻夹、吹嘴）本身会导致 VT 显着增加（+10%，P < 0.05），并且频率略有下降，在单独使用鼻夹的情况下，频率下降足够显着（-15%，P < 0.05）。从鼻呼吸改为口呼吸时 DS 的增加可能导致了 VT 的增加；单独使用鼻夹时频率的下降可能是由于刺激三叉神经区的感受器引起的。
The effects on breathing of (1) nose-clips, with and without mouthpieces, (2) tube breathing with incremental dead spaces up to 600 ml, and (3) a Venturi mask with a high air inflow reducing the effective dead space to zero were measured with respiratory inductance plethysmography. the effective dead spaces of the lengths of tubing were 25% smaller than their water-displacement volumes. The principal response to the increase in dead space was an increase in VT without any change in frequency or timing. The increase in VE was 16% greater than the ventilation of the effective dead space. The facemask with a high flow of air did not affect the pattern of breathing. External devices alone (nose-clips, mouthpieces) by themselves brought about a significant increase in VT (+10%, P < 0.05) and a small drop in frequency, which in the case of a nose-clip alone was large enough to be significant (-15%, P < 0.05). The increase in DS with the change from nasal to oral breathing may have contributed to the accompanying increase in VT; the fall in frequency with the nose-clip alone might have been caused by stimulation of receptors in the trigeminal area.