Chaplin R G, Miyamoto R T
Am J Otol. 1983 Jul;5(1):34-9.
It is difficult or impossible to obtain air or bone conduction threshold levels in some cases of moderately severe conductive involvement because it may be impossible to mask the nontest ear without also masking the test ear. This has been termed the "masking dilemma." In most of these "masking dilemma" cases the fusion at the inferred threshold (FIT) test can determine the air conduction hearing levels, and in some cases the sensorineural acuity level (SAL) test can help determine the sensorineural function.
在某些中度严重传导性听力障碍的病例中，很难或无法获得气导或骨导阈值水平，因为在不掩蔽测试耳的情况下可能无法掩蔽非测试耳。这被称为“掩蔽困境”。在大多数这些“掩蔽困境”病例中，推断阈值融合（FIT）测试可以确定气导听力水平，在某些情况下，感觉神经性听力敏锐度水平（SAL）测试可以帮助确定感觉神经功能。
