• Chest · Nov 2019

    Collateral ventilation measurement using Chartis: procedural sedation versus general anesthesia.

    • Welling Jorrit B A JBA Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Groningen Research Inst, Karin Klooster, Jorine E Hartman, Kerstjens Huib A M HAM Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Groningen Research Inst, Ina Franz, Struys Michel M R F MMRF Department of Anaesthesiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands., Anthony R Absalom, Dirk-Jan Slebos, and Barends Clemens R M CRM Department of Anaesthesiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands..
    • Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Groningen Research Institute for Asthma and COPD, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. Electronic address: j.b.a.welling@umcg.nl.
    • Chest. 2019 Nov 1; 156 (5): 984-990.

    BackgroundAbsence of interlobar collateral ventilation is key to successful endobronchial valve treatment in patients with severe emphysema and can be functionally assessed by using the Chartis measurement. This system has been validated during spontaneous breathing, undergoing procedural sedation (PS), but can also be performed under general anesthesia. Performing the Chartis measurement under PS is often challenging because of coughing, mucus secretion, and difficulties in maintaining an adequate level of sedation. The objective of this study was to investigate whether there is a difference in Chartis measurement outcomes between PS and general anesthesia.MethodsIn this prospective study, patients underwent Chartis measurements under both PS and general anesthesia. Study outcomes were Chartis measurement duration, number of measurements, feasibility, and success rate.ResultsThe study included 30 patients with severe emphysema (mean age, 62 years; median FEV1, 29% of predicted). Chartis measurement duration was significantly longer under PS than under general anesthesia (mean, 20.3 ± 4.2 min vs 15.1 ± 4.4 min; P < .001). There was no difference in the number (median [range]) of measurements performed (2 [1-3] for PS vs 1 [1-3] for general anesthesia; P = 1.00). Chartis measurement was more feasible during general anesthesia (median sum of all feasibility scores, 12 [range, 6-26] for PS vs 7 [5-13] for general anesthesia; P < .001). There was no statistical difference in success rate: 77% of PS cases vs 97% of general anesthesia cases (P = .07).ConclusionsThis study found that Chartis measurement under general anesthesia is faster and more feasible to perform compared with performance with PS, without affecting measurement outcomes.Trial RegistrationClinicaltrials.gov; No. NCT03205826; URL: www.clinicaltrials.gov.Copyright © 2019 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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