Alencar Ana P T, Iório Maria C M, Morales Douglas S
Federal University of Sao Paulo, Escola Paulista de Medicina.
Braz J Otorhinolaryngol. 2005 Sep-Oct;71(5):644-8. doi: 10.1016/s1808-8694(15)31270-2. Epub 2006 Mar 31.
The equivalent ear canal volume ranges from 0.3 ml to 1.0 ml in children and from 0.65 to 1.75 ml in adults. In subjects with chronic otitis media these values can be different, according to the disease status.
To study the equivalent ear canal volume in 52 ears of patients with chronic otitis media with and without active infection.
Clinical prospective with transversal cohort.
The equivalent ear canal volume was obtained from 52 ears diagnosed with chronic otitis media with and without active infection and in age and gender matched control group. The study group with active infection was evaluated before and after clinical treatment.
Equivalent ear canal volume mean for the studied groups with and without infection and for the control group was 2.86 ml; 1.42 ml and 0.80 ml, respectively. The equivalent ear canal volume mean for the study group with infection prior and post clinical treatment was 1.42 ml and 1.82 ml, respectively.
The equivalent ear canal volume mean was higher in patients with chronic otitis media. We did not observe variation of equivalent ear canal volume before and after clinical treatment.
儿童的等效耳道容积范围为0.3毫升至1.0毫升，成人为0.65至1.75毫升。对于患有慢性中耳炎的患者，根据疾病状态，这些值可能会有所不同。
研究52例患有或未患有活动性感染的慢性中耳炎患者的等效耳道容积。
横向队列的临床前瞻性研究。
从52例被诊断为患有或未患有活动性感染的慢性中耳炎患者以及年龄和性别匹配的对照组中获取等效耳道容积。对有活动性感染的研究组在临床治疗前后进行评估。
有感染、无感染的研究组以及对照组的等效耳道容积平均值分别为2.86毫升、1.42毫升和0.80毫升。有感染的研究组在临床治疗前后的等效耳道容积平均值分别为1.42毫升和1.82毫升。
慢性中耳炎患者的等效耳道容积平均值较高。我们未观察到临床治疗前后等效耳道容积的变化。
