Jane C. Fazio, MD, PhD; Andrew W. Hong, MD; Daniela Markovic, MS; R. Graham Barr, MD, DrPH; Eugene R. Bleecker, MD; Russell P. Bowler, MD, PhD; David J. Couper, PhD; Jeffrey L. Curtis, MD; M. Bradley Drummond, MD, MHS; Spyridon Fortis, MD, PhD, MSc; MeiLan K. Han, MD, MS9 Victor Kim, MD13 Fernando J. Martinez, MD, MS14 Jill Ohar, MD15 Victor E. Ortega, MD, PhD; Robert Paine III, MD; J. Michael Wells, MD, MSPH; Sheiphali A. Gandhi MD, MPH;1 Prescott G. Woodruff, MD, MPH; Nirupama Putcha, MD, MHS; Christopher B. Cooper, MD, PhD; Donald P. Tashkin, MD; Russell G. Buhr, MD, PhD; Igor Barjaktarevic, MD, PhD1 for the SPIROMICS investigators
People with chronic lung disease often use inhaled medicines to help them breathe. These medicines can be taken using small handheld inhalers or by using a nebulizer, a machine that turns liquid medicine into a mist that is breathed in through a mask or mouthpiece. Doctors often prescribe nebulizers, but there is limited information about who uses them, when they are started, and whether they are being used in the best way.
In this study, we followed nearly 3,000 adults, some with chronic lung disease and others at risk because of smoking, for up to 7 years. We looked at who was already using a nebulizer at the start of the study and who began using one over time. We compared their symptoms, lung function, physical activity, and history of breathing flare-ups.
By the end of the study, we learned that nebulizers were mostly used by people with more severe breathing problems. People who had frequent flare-ups, worse shortness of breath, poorer lung function, or a history of asthma were more likely to use or start using a nebulizer. Most people used nebulizers only during symptom flare-ups rather than as a daily treatment.
This research was needed because treatment guidelines often do not clearly explain when nebulizers should be used. Our findings can help guide future studies and improve treatment decisions by identifying which patients may benefit most and where better information is still needed.