The validity of shortened multiple-breath washout testing using sulfur hexafluoride in the assessment of patients with COPD.
Enya DaynesNeil GreeningJohn Owers-BradleySally J SinghSalman SiddiquiPublished in: ERJ open research (2021)
The LCI is repeatable within and between visits. There are weak correlations with measures of spirometry. A shortened LCI1/20th starting concentration correlates highly with a 1/40th washout, which may encourage clinical use.