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目的 探讨老年椎 基底动脉供血不足性眩晕患者眼震电图的改变及其临床意义。方法 对 6 0例老年椎 基底动脉供血不足性眩晕患者行眼震电图检测 ,观察视眼动系统反应、自发性眼震、冷热试验、位置性眼震 ,并以 4 0例正常健康老年人为对照。结果 老年椎 基底动脉供血不足性眩晕组中有自发性眼震 11例 (18 3% ) ;引出位置性眼震 4 6例 (76 6 % ) ,位置性眼震强度 7 76± 6 0 5°/s,明显高于对照组(P <0 0 1)。视眼动系统检查共 4 8例 (80 % )出现 1项或多项异常 ,表现为扫视试验 37例(6 1 6 % )异常 ,视跟踪试验Ⅲ型改变 2 4例、Ⅳ型改变 2例共 2 6例(4 3 3% )异常 ,凝视试验有 9例 (15 % )出现凝视性眼震 ,视动眼震减弱或双侧不对称 18例 (30 % )。冷热试验双侧不对称比值异常 38例 (6 3 3% ) ,出现优势偏向者 2 3例 (38 3% )。患者总慢相速度为 34 6 8± 5 6 6°/s,对照组中总慢相速度为4 6 5 7± 6 34°/s(P <0 0 1)。结论 眼震电图检查对老年椎 基底动脉供血不足性眩晕的诊断是一种重要的检查手段
Objective To investigate the changes and clinical significance of ocular electronystagmography in elderly patients with vertebrobasilar insufficiency vertigo. Methods 60 cases of vertebrobasilar insufficiency vertigo patients were examined by electronystagmography, the visual system of visual system movement, spontaneous nystagmus, hot and cold test, positional nystagmus, and 40 normal healthy elderly Human control. Results Spontaneous nystagmus (18.3%) occurred in the Vertebrobasilar insufficiency vertigo group in elderly patients. A total of 46 cases (76.6%) had positional nystagmus, and the location nystagmus intensity was 7 76 ± 6 05 ° / s, which was significantly higher than that of the control group (P <0.01). One or more abnormalities were found in 48 eyes (80%) under visual acuity examination, which showed abnormalities in 37 cases (61.6%) in saccade test, 24 cases in type Ⅲ test and 2 cases in type Ⅳ in follow-up test A total of 26 cases (43.3%) had abnormalities. Staring nystagmus (nystagmus) and ectopic ocular vibration (n = 18) were observed in 9 patients (15%) in the gaze test. There were 38 patients (63.3%) with asymmetric ratio of bilateral asymmetry between the hot and cold test and 23 patients (38.3%) with the dominant tendency. The total slow phase velocity was 34 6 8 ± 56 6 ° / s in patients, and the total slow phase velocity in control group was 4657 ± 6 34 ° / s (P <0.01). Conclusion The diagnosis of vertigo electronystagmography on vertigo of the vertebrobasilar artery in elderly patients is an important method of examination