Conditions: Chronic Obstructive Pulmonary Disease Chronic Bronchitis
Keywords: capsaicin COPD COPD with chronic bronchitis
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 5
Healthy volunteers: no

Brief summary:
Does tiotropium effect the cough reflex in patients with COPD and chronic bronchitis.

Detailed description:
Cough Questionnaire

This questionnaire is designed to assess the impact of cough on various aspects of your life. Read each question carefully and answer by CIRCLING the response that best applies to you. Please answer ALL questions, as honestly as you can.

1. In the last 2 weeks, have you had chest or stomach pains as a result of your cough? 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
2. In the last 2 weeks, have you been bothered by sputum (phlegm) production when you cough? 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
3. In the last 2 weeks, have you been tired because of your cough? 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
4. In the last 2 weeks, have you felt in control of your cough? 1 2 3 4 5 6 7 None of the time Hardly any time A little of the time Some time A good bit of time Most of the time All of the time
5. How often during the last 2 weeks have you felt embarrassed by your coughing? 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
6. In the last 2 weeks, my cough has made me feel anxious 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
7. In the last 2 weeks, my cough has interfered with my job, or other daily tasks 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
8. In the last 2 weeks, I felt that my cough interfered with the overall enjoyment of my life 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
9. In the last 2 weeks, exposure to paints or fumes has made me cough 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time
10. In the last 2 weeks, has your cough disturbed your sleep? 1 2 3 4 5 6 7 All of the time Most of the time A good bit of time Some time A little of the time Hardly any time None of the time

Arms:
arm 1: Cough reflex measured by capsaicin Inhalation Challenge will follow Dicpinigaitis performed at 1 and 3 months. Solutions prepared to make a stock solution of 0.01 Mol diluted with physiologic saline to yield 11 doubling concentrations from 0.98 to 1,000 uMol/L. Final diluted capsaicin concentrations are: 0.98, 1.95, 3.9, 7.8, 15.6, 31.2, 62.5, 125, 250, 500, and 1000 uMol/L. Then, place 1 ml of the first concentration into nebulizer. Subjects inhale single breath of capsaicin aerosol. Single breaths are delivered in ascending order, with normal saline randomly interspersed to increase blindness, until two or more coughs (C2) and five or more coughs (C5) are reached. The different concentrations are delivered at 2 minute intervals.

Interventions: intervention 1: Tiotropium
Intervention descriptions: intervention 1: Each subject will then receive Spiriva 18 ug/day for a total of 4 weeks. Each subject will be instructed by the PI on the proper use of the Spiriva inhaler and demonstrate the ability to properly perform the inhalation technique prior to leaving the laboratory. The patient will receive their first dose in the laboratory under the direct supervision of one of the investigators. In addition, subjects will be requested to take their Spiriva inhalation treatment the same time each day.

Protocol document: