Knight L C, Eccles R
Department of Physiology, University of Wales College of Cardiff, United Kingdom.
Acta Otolaryngol. 1991;111(6):1075-82. doi: 10.3109/00016489109100759.
The effect of a change in posture from sitting erect to lying supine and horizontal on middle ear pressure was investigated in 5 healthy adults and 5 adults with symptoms of an acute upper respiratory tract infection (URTI). The change in posture had no significant effect on middle ear pressure in the healthy subjects (p greater than 0.05). In those with URTI mean middle ear pressure increased from -39.5 daPa (erect) to -16.9 daPa (supine) (p = 0.026, n = 10). In the supine posture the middle ear pressure in subjects with URTI was raised. The cause of the increase in middle ear pressure is discussed in terms that the postural change may alter middle ear physiology such that in the supine posture there is a net production of middle ear gas as opposed to a net reabsorption in the erect posture. This may indicate that an increase in jugular venous pressure causes a net positive production of middle ear gas.
在5名健康成年人和5名有急性上呼吸道感染（URTI）症状的成年人中，研究了从直立坐姿变为仰卧平躺姿势对中耳压力的影响。姿势变化对健康受试者的中耳压力没有显著影响（p大于0.05）。在患有URTI的受试者中，平均中耳压力从-39.5达帕（直立）增加到-16.9达帕（仰卧）（p = 0.026，n = 10）。在仰卧姿势下，患有URTI的受试者的中耳压力升高。从中耳压力增加的原因进行了讨论，即姿势变化可能会改变中耳生理，使得在仰卧姿势下中耳气体产生净增加，而在直立姿势下则是净吸收。这可能表明颈静脉压升高导致中耳气体产生净正增加。
