Interventional bronchoscopy gained increasing importance for treatment of central airway obstruction. Tools for outcome assessment (dyspnea score, PFT,x-ray/CT[RAD]) are unreliable or not applicable in emergencies. In an international multicenter study we proved the usefulness of VRI before and after interventions as shown in a pilot study.
The 40 sensors of the VRI register vibrations by breathing on the chest. A processor transforms the signals to real time grey scale images that are analyzed by quality and quantification. In 5 centers the VRI was analyzed before and after interventions (dilation, lasering/APC, stenting) for localization and success.
In 86 subjects (36f/50m) with 98 sites of stenosis 93 procedures were performed. The obstruction was localized in 85% as compared to 70% by RAD. Outcome assessment was successful in 88% and superior to dyspnea score (67%), PFT (67%), and RAD (62%) and as good as all combined.
The study confirmed the usefulness of VRI for localization and outcome assessment of bronchoscopic interventions in central airway stenosis. It is non-invasive, radiation free, readily available, cheap and can be repeatedly applied.
The study confirmed that VRI may add to or even replace more invasive and costly methods for planning and assessment of interventions in central airway stenosis.
Heinrich Becker, Grant monies (from industry related sources) The study was supported by DeepBreeze Ltd., Or Akiva, Israel by providing the VRI devices and financially for logistics.; Consultant fee, speaker bureau, advisory committee, etc. HDB received finacial support for presentation at meetings; No Product/Research Disclosure Information