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- W4323539503 abstract "Abstract Background and Objective Dynamic hyperinflation (DH) is a major marker of exertional dyspnoea in severe emphysema. We hypothesized that bronchoscopic lung volume reduction (BLVR) using endobronchial valves (EBVs) decreases DH. Methods In this prospective bi‐centre study from both Toulouse and Limoges Hospitals, we assessed DH during an incremental cycle ergometry before and 3 months after EBVs treatment. The primary objective was to observe the change in inspiratory capacity (IC) at isotime. Target lobe volume reduction (TLVR) and changes in residual volume (RV), forced expiratory volume in one‐second (FEV 1 ), mMRC, 6 minutes walking distance (6MWD), BODE and other dynamic measures like tele‐expiratory volume (EELV) were also analysed. Results Thirty‐nine patients were included, of whom thirty‐eight presented DH. IC and EELV at isotime significantly improved (+214 mL, p = 0.004; −713 mL, p ˂ 0.001, respectively). Mean changes were +177 mL for FEV 1 (+19%, p < 0.001), −600 mL for RV ( p < 0.0001), +33 m for 6MWD ( p < 0.0001), respectively. Patients who responded on RV (>430 mL decrease) and FEV 1 (>12% gain) had better improvements compared to non‐responders (+368 mL vs. +2 mL; +398 mL vs. −40 mL IC isotime, respectively). On the opposite, in patients who responded on DH (>200 mL IC isotime increase), changes in TLV (−1216 mL vs. −576 mL), FEV 1 (+261 mL vs. +101 mL), FVC (+496 mL vs. +128 mL) and RV (−805 mL vs. −418 mL) were greater compared to non‐responders. Conclusions DH decreases after EBVs treatment, and this improvement is correlated with static changes." @default.
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- W4323539503 date "2023-03-08" @default.
- W4323539503 modified "2023-10-10" @default.
- W4323539503 title "Impact of bronchoscopic lung volume reduction with endobronchial valves on dynamic hyperinflation: Results from the <scp>PIERCE</scp> study" @default.
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- W4323539503 doi "https://doi.org/10.1111/resp.14488" @default.
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