De Veaux Candace K E, Montagnese Thomas A, Heima Masahiro, Aminoshariae Anita, Mickel Andre
Resident, Postgraduate Endodontic Program, School of Dental Medicine, Case Western Reserve University, Cleveland, Ohio.
Assistant Professor, Department of Endodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, Ohio.
Anesth Prog. 2016 Winter;63(4):181-184. doi: 10.2344/15-00039.1.
The purpose of this study was to compare the effectiveness of various concentrations of NO/O on obtunding a hypersensitive gag reflex. We hypothesized that the administration of nitrous oxide and oxygen would obtund a hypersensitive gag reflex enough to allow a patient to tolerate the placement and holding of a digital x-ray sensor long enough to obtain a dental radiograph. Volunteers claiming to have a hypersensitive gag reflex were first screened to validate their claim and then tested by placing a size 2 digital x-ray sensor in the position for a periapical radiograph of the right mandibular molar area and holding it in place for 10 seconds. Subjects were first tested using room air only, then 30%, 50%, or 70% nitrous oxide until they were able to tolerate the sensor without gagging or discomfort. A visual analog scale was used for subjective responses, and other statistical tests were used to analyze the results. We found that for some subjects, 30% nitrous oxide was sufficient; for others, 50% was needed; and for the remainder of the subjects, 70% was sufficient to tolerate the test. Using a combination of 70% nitrous oxide and 30% oxygen allowed all patients claiming to have a hypersensitive gag reflex to tolerate the placement and holding of a digital x-ray sensor long enough to take a periapical radiograph.
本研究的目的是比较不同浓度的一氧化二氮/氧气对抑制过度敏感的咽反射的效果。我们假设给予一氧化二氮和氧气能够充分抑制过度敏感的咽反射，使患者能够耐受数字X射线传感器的放置和保持足够长的时间以获取牙科X光片。自称有过度敏感咽反射的志愿者首先经过筛查以验证其说法，然后通过将尺寸2的数字X射线传感器放置在下颌右磨牙区根尖片的位置并保持10秒来进行测试。受试者首先仅使用室内空气进行测试，然后使用30%、50%或70%的一氧化二氮进行测试，直到他们能够耐受传感器而不出现恶心或不适。使用视觉模拟量表来评估主观反应，并使用其他统计测试来分析结果。我们发现，对于一些受试者，30%的一氧化二氮就足够了；对于另一些受试者，则需要50%；而对于其余受试者，70%足以耐受测试。使用70%的一氧化二氮和30%的氧气组合，所有自称有过度敏感咽反射的患者都能够耐受数字X射线传感器的放置和保持足够长的时间以拍摄根尖片。
