Ander Douglas S, Aisiku Imoigele P, Ratcliff Jonathan J, Todd Knox H, Gotsch Karen
Department of Emergency Medicine, Emory University, Atlanta, GA, USA.
Congest Heart Fail. 2004 Jul-Aug;10(4):188-91. doi: 10.1111/j.1527-5299.2004.03475.x.
Patients presenting to the emergency department with heart failure are evaluated based on the subjective sensation of dyspnea. In this study, the authors sought to determine the change in dyspnea, measured by a visual analog scale (VAS), which is associated with a meaningful change in the patient's perception and the effect of dyspnea severity on the VAS. In this prospective, observational study the authors defined a meaningful change in VAS dyspnea as the difference between VAS scores when patients reported "a little less difficulty breathing" or "a little more difficulty breathing." Seventy-four patients were evaluated, and the mean for a meaningful change in VAS was 21.1 mm (95% confidence interval, 12.3-29.9 mm). Patients that recorded higher index VAS scores had a significantly greater change in VAS. VAS scores and the changes with treatment provide the treating physician with another means to assess the effects of their interventions.
因心力衰竭前往急诊科就诊的患者是根据呼吸困难的主观感受进行评估的。在本研究中，作者试图确定通过视觉模拟量表（VAS）测量的呼吸困难变化，该变化与患者感知的有意义变化以及呼吸困难严重程度对VAS的影响相关。在这项前瞻性观察研究中，作者将VAS呼吸困难的有意义变化定义为患者报告“呼吸困难稍有减轻”或“呼吸困难稍有加重”时VAS评分的差异。对74名患者进行了评估，VAS有意义变化的平均值为21.1毫米（95%置信区间，12.3 - 29.9毫米）。记录的初始VAS评分较高的患者，其VAS变化显著更大。VAS评分及其治疗后的变化为治疗医生提供了另一种评估其干预效果的方法。
