Cough-Generated Aerosols of Nontuberculous Mycobacteria in Patients With Cystic Fibrosis
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 5
- 试验地点
- 1
- 主要终点
- The number of CF patients who produce culturable aerosols of NTM during coughing.
研究概览
简要总结
Non-tuberculous mycobacteria (NTM) are opportunistic pathogens normally found in soil and water that are being cultured from Cystic Fibrosis (CF) airways at an increasing frequency. They have been demonstrated to cause clinically significant lung disease in some cases and the transmission of NTM, from person to person has been proposed. There are currently no standardized guidelines for isolation of those colonized or infected with NTM.
The investigators will measure particle droplet size from patients with CF who have positive sputum cultures for NTM with the hypothesis that they will be in a range that can spread infection.
详细描述
Patients with a positive NTM sputum culture will be asked to participate in the study. If they agree to participate they will sign an informed consent and will be scheduled to come to the University of Florida Clinical Research Center for the testing.
The test will consist of the following: pulmonary function test, collecting a sputum culture if possible, coughing for 5 minutes into a tube connected to a canister, hypertonic saline and albuterol will be given after the 5 minutes of coughing and then they would repeat with another 5 minutes of coughing. There can be a break inbetween the coughing if needed.
Patients maybe asked to come back a second time if they develop a different type of NTM or start treatment for NTM.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Prospective
入排标准
- 年龄范围
- 8 Years 至 75 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age greater than or equal to age 8 years
- •Confirmed Diagnosis of CF
- •Sputum/Throat/Bronchoscopic culture positive for NTM within the last 12 months
排除标准
- •Pregnancy
- •Pneumothorax within the last 6 months
- •Forced Expiratory Volume at one second <30% predicted
- •Hemoptysis greater than 1 tablespoon within the last 7 days
结局指标
主要结局
The number of CF patients who produce culturable aerosols of NTM during coughing.
时间窗: 6 weeks
Patients with CF and a positive sputum or bronchoalveolar lavage (BAL) culture for NTM will cough into a chamber filled with culture plates that can measure droplet size. The investigators are looking for large droplets, that could land on surfaces and be a source for infection transmission, as well as fine droplets(5 microns or less)that are consistent with airborne transmission.
次要结局
未报告次要终点