Becker G D
Otolaryngology. 1978 Sep-Oct;86(5):ORL-830-3. doi: 10.1177/019459987808600534.
Caloric testing plays a prominent role in evaluating the vestibular system. A unilateral reduced vestibular response (RVR) is a common abnormality and is consistent with peripheral vestibular pathology. An erroneous interpretation of RVR may be made due to the following circumstances: laboratory technique, the influence of directional preponderance (DP) on monothermal tests (MT), unilateral hyperactivity, or pseudocaloric (PC) nystagmus. These errors in interpretation may be avoided by (1) repeating any single irrigation that is significantly different from the other three, to rule out laboratory technical error; (2) performing bithermal (BT) testing exists, to eliminate the effects of directional preponderance; (3) observing that a right/left (R/L) difference is not due to unilateral hyperactivity, by noting absolute slow phase (SP) velocity; and (4) by demonstrating bidirectional sensitivity of the cupula before concluding that residual caloric function exists instead of no function.
冷热试验在评估前庭系统中起着重要作用。单侧前庭反应降低（RVR）是一种常见异常，与外周前庭病变相符。由于以下情况可能会对RVR做出错误解读：实验室技术、方向优势（DP）对单温试验（MT）的影响、单侧活动亢进或伪冷热（PC）眼震。通过以下方法可避免这些解读错误：（1）重复任何与其他三次明显不同的单次冲洗，以排除实验室技术误差；（2）进行双侧（BT）测试，以消除方向优势的影响；（3）通过记录绝对慢相（SP）速度，观察右/左（R/L）差异并非由单侧活动亢进所致；（4）在得出存在残余冷热功能而非无功能的结论之前，证明壶腹嵴的双向敏感性。
