Nebulized or Inhaled Albuterol for Lymphangioleiomyomatosis
- Lymphangioleiomyomatosis (LAM) is a rare type of lung disease that occurs almost exclusively in women. In LAM, muscle tissue grows in the lungs and starts to block the flow of air. It is a progressive disease, and in severe cases may require a lung transplant. One possible treatment to improve breathing in people with LAM is inhaled albuterol. Albuterol can be given in a metered dose inhaler (MDI) or with a nebulizer. Researchers want to compare these methods to see which method best improves lung function in women with LAM.
- To see whether a nebulizer or MDI can better improve lung function in women with LAM.
- Women at least 18 years of age who have impaired lung function because of LAM.
- Participants will be screened with a physical exam and medical history. No lab tests will be needed for this study.
- Participants will have a 3-day overnight stay at the National Institutes of Health. Those who are using long-acting inhalers will have to stop taking these drugs 1 week before the study.
- Participants will receive either the nebulizer or two or four puffs of the inhaler. Four puffs of albuterol is a higher dose than is normally prescribed, and is being tested on this study.
- Participants will have each treatment around the same time of day on each of the 3 days. Before and after taking the albuterol, participants will have lung function tests.
Drug: albuterol inhaler
Drug: albuterol nebulizer
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Bronchodilator Effects of Nebulized Versus Inhaled Albuterol In Subjects With Lymphangioleiomyomatosis|
- Greater improvement in lung function with nebulized albuterol. [ Time Frame: 3 days ] [ Designated as safety issue: No ]
|Study Start Date:||December 2012|
|Estimated Study Completion Date:||November 2015|
|Estimated Primary Completion Date:||November 2015 (Final data collection date for primary outcome measure)|
Drug: albuterol inhaler
We have reported that approximately one third of patients with lymphangioleiomyomatosis (LAM) who have airflow obstruction respond to bronchodilators such as albuterol, a Beta2-adenergic receptor agonist, with an increase in forced expiratory flow in one second (FEV1) of 12% and 200 ml above baseline values. Others however, have questioned these findings, reporting instead, a low rate of response of only six percent. Contrasting with our study, in this study albuterol was administered with a metered dose inhaler whereas in ours it was given by nebulizer. We propose to measure changes in lung function after administration of albuterol, respectively by metered inhaler and nebulizer, for 3 consecutive days in 150 LAM subjects. Our hypothesis is that albuterol administered by nebulization will produce a greater increase in FEV1 than two puffs of inhaled albuterol. If this hypothesis is confirmed, then we may recommend that patients with LAM and airflow obstruction use as a method of drug administration a nebulizer, rather than a metered dose inhaler.
|Contact: Mary Haughey, R.N.||(301) firstname.lastname@example.org|
|Contact: Angelo M Taveira-DaSilva, M.D.||(301) email@example.com|
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike||Recruiting|
|Bethesda, Maryland, United States, 20892|
|Contact: For more information at the NIH Clinical Center contact Patient Recruitment and Public Liaison Office (PRPL) 800-411-1222 ext TTY8664111010 firstname.lastname@example.org|
|Principal Investigator:||Angelo M Taveira-DaSilva, M.D.||National Heart, Lung, and Blood Institute (NHLBI)|