预测症状成年人的未诊断喘与正常的前和后支气管扩展器螺旋测量:支气管挑战测试的决策工具
Sheojung Shin1, George Alex Whitmore2, Louis-Philippe Boulet3
1The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Canada.
BMC pulmonary medicine
|December 9, 2023
概括
四个患者特征可以帮助识别成年人的喘与正常的螺旋测量,指导进一步的支气管挑战测试 (BCT). 这有助于诊断困难的喘病例.
科学领域:
- 肺部医学 肺部医学
- 呼吸系统诊断 呼吸系统诊断
- 临床预测建模模型
背景情况:
- 在呈现正常螺旋计结果的患者中,喘诊断可能具有挑战性.
- 未被诊断的喘可能在没有专门测试的情况下持续存在,导致治疗延迟.
研究的目的:
- 为了确定患有喘的临床预测因子,在有症状的成年人中进行正常的螺旋测量.
- 为临床医生开发一种工具,以确定是否需要支气管挑战测试 (BCT).
主要方法:
- 通过随机数字拨号和病例查找,招募了具有症状的成年人,精神测量正常.
- 经过BCT,诊断出基于甲胆诱导度 (PC20 < 8 mg/ml) 的喘.
- 开发了一个多变量逻辑回归模型,使用单变量预测器来预测喘,计算AUC,灵敏度和特异性.
主要成果:
- 在132名表现正常的成年人中,有34%的成年人被诊断出患有喘.
- 喘的主要预测因素包括运动/感冒引起的症状 (97%的灵敏度),女性性别,支气管扩张前FEV1和支气管扩张后FEV1的变化.
- 多变量模型的AUC为0.82,灵敏度为82%,特异性为66%.
结论:
- 四个容易评估的患者特征有效地预测了正常螺旋测量个体的未被诊断的喘.
- 这些预测因素可以指导临床医生选择患者接受BCT.
- 需要对开发的决策工具进行进一步的前性验证.
相关概念视频
01:30Asthma-IV: Diagnostic and Management
2.5K
The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
2.5K
01:27Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
2.5K
Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History
Medical History
2.5K
01:20Chronic Obstructive Pulmonary Disease-I: Introduction
2.8K
Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
2.8K
01:25Pulmonary Function Tests
335
Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
335
01:29Asthma-I: Introduction
2.6K
Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
2.6K
01:26COPD: Management Using Bronchodilators and Corticosteroids
213
Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
213