Department of Surgery, Concord Repatriation General Hospital, Sydney, NSW, Australia.
School of Medicine, University of Notre Dame, Sydney, NSW, Australia.
Eur Arch Otorhinolaryngol. 2021 Jun;278(6):1917-1926. doi: 10.1007/s00405-021-06658-z. Epub 2021 Feb 13.
No gold-standard investigation exists for laryngopharyngeal reflux (LPR). Multichannel intraluminal impedance (MII)-pH testing has uncertain utility in LPR. Meanwhile, reflux scintigraphy allows immediate and delayed visualisation of tracer reflux in the esophagus, pharynx, and lungs. The present study aimed to correlate MII-pH and scintigraphic reflux results in patients with primary LPR.
Consecutive patients with LPR underwent MII-pH and scintigraphic reflux studies. Abnormal values for MII-pH results were defined from existing literature. MII-pH and scintigraphic data were correlated.
105 patients with LPR [31 males (29.5%), median age 60 years (range 20-87)] were studied. Immediate scintigraphic reflux was seen in the pharynx in 94 (90.4%), and in the proximal esophagus in 94 (90.4%). Delayed scintigraphic contamination of the pharynx was seen in 101 patients (96.2%) and in the lungs of 56 patients (53.3%). For MII-pH, abnormally frequent reflux was seen in the distal esophagus in 12.4%, proximal esophagus in 25.7%, and in the pharynx in 82.9%. Patients with poor scintigraphic clearance had higher Demeester scores (p = 0.043), more proximal reflux episodes (p = 0.046), more distal acid reflux episodes (p = 0.023), and more prolonged bolus clearance times (p = 0.002).
Reflux scintigraphy has a high yield in LPR patients. Scintigraphic time-activity curves correlated with validated MII-pH results. A high rate of pulmonary microaspiration was found in LPR patients. This study demonstrated a high level of pharyngeal contamination by scintigraphy and MII-pH, which supports the use of digital reflux scintigraphy in diagnosing LPR.
目前尚无金标准方法用于检测喉咽反流(LPR)。多通道腔内阻抗-pH 监测(MII-pH)技术在 LPR 中的应用价值存在不确定性。与此同时,反流闪烁显像可即时和延迟显示示踪剂在食管、咽和肺中的反流情况。本研究旨在比较 MII-pH 与闪烁显像反流结果在原发性 LPR 患者中的相关性。
连续入组的 LPR 患者同时接受 MII-pH 和闪烁显像反流检查。MII-pH 异常值定义来源于现有文献。分析 MII-pH 和闪烁显像数据之间的相关性。
共纳入 105 例 LPR 患者[31 例男性(29.5%),中位年龄 60 岁(范围 20-87 岁)]。94 例(90.4%)即刻闪烁显像可见反流累及咽,94 例(90.4%)可见反流累及近端食管。101 例(96.2%)患者可见延迟性咽反流污染,56 例(53.3%)患者可见肺内反流污染。MII-pH 检测示,远端食管、近端食管和咽部异常反流的发生率分别为 12.4%、25.7%和 82.9%。闪烁显像清除不良的患者 Demeester 评分更高(p=0.043),近端反流事件更多(p=0.046),远端酸反流事件更多(p=0.023),且食团廓清时间延长(p=0.002)。
反流闪烁显像在 LPR 患者中具有较高的检出率。闪烁显像时间-活性曲线与经验证的 MII-pH 结果相关。LPR 患者存在较高的肺部微吸入率。本研究显示,LPR 患者的咽部存在较高的反流污染,MII-pH 检测也有较高的反流污染率,这支持使用数字化反流闪烁显像来诊断 LPR。