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用四种和八种气味进行嗅觉训练:与临床测试和嗅觉球体体积的比较
Sotiria Genetzaki1, Vasilios Nikolaidis1, Konstantinos Markou1
12nd ORL Academic Department, Aristotle University, Thessaloniki, Greece.
概括
用8种气味进行的嗅觉训练 (OT) 与4种气味相比,对于后感染性嗅觉功能障碍 (PIOD) 的有效性没有显著差异. 然而,8气味方案改善了患者长期嗅觉再培训的坚持.
科学领域:
- 神经学 神经学
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 医学研究 医学研究
背景情况:
- 感染后嗅觉功能障碍 (PIOD) 是嗅觉丧失的常见原因,治疗选择有限.
- 嗅觉训练 (OT) 是PIOD的一种有前途的治疗方法,但最佳的训练方案需要进一步研究.
研究的目的:
- 为了比较一个8气味嗅觉训练 (OT) 方案与PIOD的经典4气味方案的有效性.
- 评估两种OT方案之间的心理物理嗅觉测试结果和嗅觉球体 (OB) 体积.
主要方法:
- 一项前性队列研究,涉及72名PIOD患者.
- 患者被分配到一个4气味 (COT) 或8气味 (EOT) 的OT方案,持续16周.
- 用Sniffin'Sticks测试评估嗅觉功能,并通过MRI测量患者的一个子集的OB体积.
主要成果:
- 在4气味和8气味OT组之间没有观察到嗅觉测试结果或OB体积的显著差异.
- 凸的嗅球 (OB) 患者在治疗后表现出更好的测试结果和改善,无论OT类型如何.
- 与4气味组相比,8气味的OT组表现出明显更高的坚持率.
结论:
- 在OT中的气味数量不会显著影响PIOD的治疗疗效.
- 一个扩展的OT方案 (8种气味) 可以改善患者长期嗅觉康复的坚持.
- 嗅觉球形状可以作为临床嗅觉功能障碍评估中的预后指标.
相关概念视频
Olfaction
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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Olfactory Receptors: Location and Structure
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
Physiology of Smell and Olfactory Pathway
Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
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