I had 4 Zephyr valves placed in my left lower lobe last November (11/2/2024). I elected to have the valves placed after long hours of research and discussion of valves versus other options. My pulmonary procedure was done at Duke University Interventional Pulmonary Department. I had a 4 day hospital stay with no complications and flew home. I feel that they have made a significant difference in my respiratory status. Unfortunately, if you have inflammation with secretions the valves do not help....that is a secondary issue my Pulmonologist and I have been addressing.