Chandra N S, Shepard N T
Department of Otolaryngology, University of Michigan Medical Center, Ann Arbor, USA.
Am J Otol. 1996 Mar;17(2):271-7.
The Sensory Organization Test (SOT) of dynamic posturography, a functional test of balance, has a low sensitivity for compensated unilateral peripheral vestibular lesions. Tilting the head 45 degrees laterally during SOT [i.e. lateral heat tilt (LHT) SOT] may better detect such lesions. Normal subjects and vestibular clinic patients were studied using SOT and LHT SOT. Caloric, rotational chair, and oculomotor testing were also performed for patients, in either a double-blind or non-double-blind manner. The results for both patient groups were similar and thus were collapsed. Normative LHT SOT performance ranges were established to be slightly lower than corresponding SOT scores, for subjects aged 20-59 years. Subjects in older age groups performed with similar equilibrium scores in both SOT and LHT SOT. Normal subjects aged 20-59 and 60-69 years performed similarly, whereas those aged 70-79 performed significantly worse. Sensitivity of LHT SOT to unilateral peripheral vestibular lesions was poor (24%). Specificity of LHT SOT from patients having balance-system weakness was 90%. The results of this study indicate that LHT posturography does not facilitate significant discrimination of patients with compensated unilateral peripheral weakness from those without such lesions.
动态姿势描记法的感觉组织测试（SOT）是一种平衡功能测试，对代偿性单侧周围性前庭病变的敏感性较低。在SOT期间将头部向一侧倾斜45度[即侧头倾斜（LHT）SOT]可能能更好地检测出此类病变。使用SOT和LHT SOT对正常受试者和前庭诊所患者进行了研究。还以双盲或非双盲方式对患者进行了冷热试验、转椅试验和动眼神经测试。两个患者组的结果相似，因此进行了合并。对于20至59岁的受试者，确定的LHT SOT正常表现范围略低于相应的SOT分数。老年组受试者在SOT和LHT SOT中的平衡分数相似。20至59岁和60至69岁的正常受试者表现相似，而70至79岁的受试者表现明显较差。LHT SOT对单侧周围性前庭病变的敏感性较差（24%）。LHT SOT对有平衡系统虚弱患者的特异性为90%。本研究结果表明，LHT姿势描记法并不能显著区分有代偿性单侧周围性虚弱的患者和没有此类病变的患者。
