文献报道波氏吹张法仅能暂时缓解中耳负压状态,吹张后鼓膜又会很快回到原处。以前用鼓室测压研究表明,中耳压力在经导管或波氏法吹张后,开始迅速下降,而后则下降缓慢,最后有一些耳的中耳负压较吹张前更甚,这恐与咽鼓管自动排气和中耳吸收有关。文献提到用空气吹张能使中耳腔内氧分压增高促使 Reported by the literature of the Bourgeoisobubble method can only temporarily alleviate the negative pressure in the middle ear, after blowing the tympanic membrane will soon be back in place. Previous studies using tympanometry showed that the middle ear pressure began to drop rapidly after catheterization or Bourdie’s blowdown and then slowed down. Finally, some ears had a negative pressure in the middle ear even worse than before, which threatened to Eustachian tube automatically exhaust and the absorption of the middle ear. The literature mentions that air blowing can make the partial pressure of oxygen in middle ear cavity increase