Many scholar have different opinions about clinical relationship between negative pressure tympanogram and middle ear effusion.

目前,国内学压型鼓室压图与鼓室积液的临床联仍存有分歧。

All tympanograms of 28 ears showed "A" type and bilateral abolition stapedius muscle reflex.

28耳鼓室图呈“A”型、同及肌反射消失。

The tympanograms in 100 ears were “type B”,in which there was presence of middle ear effusions in 94 ears by auripuncture in the middle ears.

鼓室导抗图B型100耳中，经鼓室穿剌证明有鼓室积液94耳。