de Souza Clarissa Pimentel, Verocai Guilherme Gomes, Balbi Margareth, Scott Fabio Barbour
Universidade Federal Rural do Rio de Janeiro, Instituto de Veterinária, Departamento de Parasitologia Animal, Laboratório de Quimioterapia Experimental em Parasitologia Veterinária, SeropédicaRJ, Brasil.
Rev Bras Parasitol Vet. 2013 Jul-Sep;22(3):440-2. doi: 10.1590/S1984-29612013000300022.
Canine otoacariasis, or otodectic mange, is a common parasitic disorder of dogs' ear canals caused by the mite Otodectes cynotis. Infestation can be detected through diverse protocols of varying sensitivity. We evaluated the use of video otoscopy in comparison with conventional otoscopy and cerumen examination under a microscope for diagnosing O. cynotis in dogs. Thirty-five dogs were evaluated bilaterally for the presence of ear mites, using a veterinary otoscope (Gowlands®), a video otoscope (Welch Allyn®) and the gold-standard technique of examination of swab-collected cerumen under a microscope. Each ear was considered to represent one sample, and 69 ears were examined, since one dog presented with one completely stenotic ear canal. Ear mites were diagnosed in 59.42% (41/69) through video otoscopy. The same 41 infested ear canals were detected by means of cerumen examination under a microscope, whereas conventional otoscopy was able to diagnose mites in only 39.13% (27/69). This difference was statistically significant (p < 0.001). Video otoscopy proved to be superior to conventional otoscopy, and equivalent to the gold standard for detection of O. cynotis in canine ear canals, and should be recommended for controlled trials on drug efficacy for treatment of canine otoacariasis.
犬耳螨病，即耳痒螨疥癣，是一种由犬耳痒螨引起的常见犬类耳道寄生虫病。可通过多种灵敏度不同的检测方法来检测感染情况。我们评估了视频耳镜检查与传统耳镜检查以及显微镜下耵聍检查相比，在诊断犬耳痒螨方面的应用。使用兽医耳镜（Gowlands®）、视频耳镜（Welch Allyn®）以及显微镜下检查棉签采集的耵聍这一金标准技术，对35只犬的双耳进行耳螨检查。由于有1只犬的一侧耳道完全狭窄，每只耳朵被视为一个样本，共检查了69只耳朵。通过视频耳镜检查，在59.42%（41/69）的耳朵中诊断出耳螨。通过显微镜下耵聍检查也检测到了相同的41只受感染耳道，而传统耳镜检查仅能在39.13%（27/69）的耳朵中诊断出耳螨。这种差异具有统计学意义（p < 0.001）。视频耳镜检查被证明优于传统耳镜检查，并且在检测犬耳道中的耳痒螨方面等同于金标准，应推荐用于犬耳螨病治疗药物疗效的对照试验。
